- home
- Search
- NEANIAS Atmospheric Research Community
- Open Access
- BE
- Mémoires en Sciences de l'Informati...
- NEANIAS Atmospheric Research Community
- Open Access
- BE
- Mémoires en Sciences de l'Informati...
Loading
description Publicationkeyboard_double_arrow_right Article 2013 FrancePublisher:Czech Geological Survey Authors: Le Hérissé, Alain; Paris, Florentin; Steemans, Philippe;Le Hérissé, Alain; Paris, Florentin; Steemans, Philippe;Well preserved assemblages of cryptospores, chitinozoans, acritarchs, leiospheres, tasmanitids, colonies of Gloeocapsomorpha, scolecodonts and eurypterid fragments from 23 core samples of the Moussegouda core hole in the Erdi Basin, northern Chad, and from two samples from well KW-2 in Kufra Basin, South East Libya are investigated. These palynomorphs were recovered from the southernmost North African marine deposits of Late Ordovician and possibly early Silurian age. The palaeoenvironment evolves from late Hirnantian glacio-marine diamictites to silt-dominated sequences suggesting a marginal marine environment of possibly latest Hirnantian to earliest Rhuddanian age (post-elongata-pre-fragilis chitinozoan assemblages). The recovered palynomorph assemblages are compared and correlated with contemporaneous assemblages recorded in other northern Gondwana localities (Mauritania, Morocco Algeria, Libya, Africa, Saudi Arabia, Jordan), and in South Africa, in order to evaluate possible effects of the ice cap melting on palynomorph assemblages and sedimentation. Our goal is also to improve the regional biostratigraphy across the Ordovician-Silurian boundary. The composition of the recovered palynomorph assemblages, with mixed terrestrial and marine microflora, suggests that the topmost Ordovician or earliest Silurian in northern Chad and southeastern Libya, reflects nearshore conditions, with obvious fresh water influences. The lack of black shale or grey shale in the uppermost Ordovician and of “hot shale” in the lower Silurian in these areas, and their replacement by siltstones, are probably related to an isostatic readjustment that rapidly starved the marine sedimentation in the areas previously overlain by a thick ice cover during the climax of the Hirnantian glaciation. Tasmanites tzadiensis Le Herisse sp. nov. and Euconochitina moussegoudaensis Paris sp. nov., two new palynomorphs of biostratigraphical interest are described and illustrated.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3140/bull.geosci.1383&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 31 citations 31 popularity Top 10% influence Average impulse Top 10% Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3140/bull.geosci.1383&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2018 FrancePublisher:Elsevier BV Laura Lamair; Aurélia Hubert-Ferrari; Shinya Yamamoto; Meriam El Ouahabi; Jacqueline Vander Auwera; Stephen P Obrochta; Evelien Boes; Atsunori Nakamura; Osamu Fujiwara; Masanobu Shishikura; Sabine Schmidt; Giuseppe Siani; Yosuke Miyairi; Yusuke Yokoyama; Marc De Batist; Vanessa M.A. Heyvaert;Abstract Lacustrine sediments are particularly sensitive to modifications within the lake catchment. In a volcanic area, sedimentation rates are directly affected by the history of the volcano and its eruptions. Here, we investigate the impact of Mt. Fuji Volcano (Japan) on Lake Motosu and its watershed. The lacustrine infill is studied by combining seismic reflection profiles and sediment cores. We show evidence of changes in sedimentation patterns during the depositional history of Lake Motosu. The frequency of large mass-transport deposits recorded within the lake decreases over the Holocene. Before ~ 8000 cal yr BP, large sublacustrine landslides and turbidites were filling the lacustrine depression. After 8000 cal yr BP, only one large sublacustrine landslide was recorded. The change in sedimentation pattern coincides with a change in sediment accumulation rate. Over the last 8000 cal yr BP, the sediment accumulation rate was not sufficient enough to produce large sublacustrine slope failures. Consequently, the frequency of large mass-transport deposits decreased and only turbidites resulting from surficial slope reworking occurred. These constitute the main sedimentary infill of the deep basin. We link the change in sediment accumulation rate with (i) climate and vegetation changes; and (ii) the Mt. Fuji eruptions which affected the Lake Motosu watershed by reducing its size and strongly modified its topography. Moreover, this study highlights that the deposition of turbidites in the deep basin of Lake Motosu is mainly controlled by the paleobathymetry of the lakefloor. Two large mass-transport deposits, occurring around ~ 8000 cal yr BP and ~ 2000 cal yr BP respectively, modified the paleobathymetry of the lakefloor and therefore changed the turbidite depositional pattern of Lake Motosu.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.sedgeo.2017.11.010&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesbronze 5 citations 5 popularity Average influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.sedgeo.2017.11.010&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2021 Netherlands, Belgium, FrancePublisher:Elsevier BV Leon T. Hauser; Jean-Baptiste Féret; Nguyen An Binh; Niels van der Windt; Ângelo Filipe dos Reis Pereira e Cortinhas Sil; J. Timmermans; Nadejda A. Soudzilovskaia; Peter M. van Bodegom;Large-scale high-resolution satellite observations of plant functional diversity patterns will greatly benefit our ability to study ecosystem functioning. Here, we demonstrate a potentially scalable approach that uses aggregate plant traits estimated from radiative transfer model (RTM) inversion of Sentinel-2 satellite images to calculate community patterns of plant functional diversity. Trait retrieval relied on simulations and Look-up Tables (LUTs) generated by a RTM rather than heavily depending on a priori field data and data-driven statistical learning. This independence from in-situ training data benefits its scalability as relevant field data remains scarce and difficult to acquire. We ran a total of three different inversion algorithms that are representative of commonly applied approaches and we used two different metrics to calculate functional diversity. In tandem with Sentinel-2 image-based estimation of plant traits, we measured Leaf Area Index (LAI), leaf Chlorophyll content (CAB), and Leaf Mass per Area (LMA) in-situ in a (semi-)natural heterogeneous landscape (Montesinho region) located in northern Portugal. Sampling plots were scaled and georeferenced to match the satellite observed pixels and thereby allowed for a direct one-to-one posterior ground truth validation of individual traits and functional diversity. Across approaches, we observe a reasonable correspondence between the satellite-based retrievals and the insitu observations in terms of the relative distribution of individual trait means and plant functional diversity across locations despite the heterogeneity of the landscape and canopies. The functional diversity estimates, based on a combination of canopy and leaf traits, were robust against estimation biases in trait means. Particularly, the convex hull volume estimate of functional diversity showed strong concordance with in-situ observations across all three inversion methods (Spearman's rho: 0.67-0.80). The remotely sensed estimates of functional diversity also related to in-situ taxonomic diversity (Spearman's rho: 0.55-0.63). Our work highlights the potential and challenges of RTM-based functional diversity metrics to study spatial community-level ecological patterns using currently operational and publicly available Sentinel-2 imagery. While further validation and assessment across different ecosystems and larger datasets are needed, the study contributes towards a further maturation of scalable, spatially, and temporally explicit methods for functional diversity assessments from space. The authors would like to acknowledge Christian Rossi, Prof. Geof-frey M. Henebry, and the anonymous reviewers for their valuable comments and suggestions that greatly improved the manuscript. This work was supported financially by the Ecology Fund of the RoyalNetherlands Academy of Arts and Sciences (‘KNAW Fonds Ecologie’; KNAWWF/807/19011). We thank Altino Geraldes, Joao Carlos Aze-vedo, and the local farmers and foresters in the Montesinho-Nogueira Natura 2000 site for their help and collaboration. We thank Emilie Didaskalou for her lab assistance. J.-B. F ́eret acknowledges financial support from Agence Nationale de la Recherche (BioCop project—ANR- 17-32CE-0001).
NARCIS arrow_drop_down Leiden University Scholarly Publications RepositoryOther literature type . 2021License: CC BYData sources: Leiden University Scholarly Publications RepositoryMémoires en Sciences de l'Information et de la Communication; Hal-DiderotArticle . 2021License: CC BYFull-Text: https://hal.inrae.fr/hal-03245246/documentadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.rse.2021.112505&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 23 citations 23 popularity Top 10% influence Average impulse Top 10% Powered by BIP!more_vert NARCIS arrow_drop_down Leiden University Scholarly Publications RepositoryOther literature type . 2021License: CC BYData sources: Leiden University Scholarly Publications RepositoryMémoires en Sciences de l'Information et de la Communication; Hal-DiderotArticle . 2021License: CC BYFull-Text: https://hal.inrae.fr/hal-03245246/documentadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.rse.2021.112505&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint 2012 FrancePublisher:EDP Sciences Andrii Elyiv; N. Clerc; Manolis Plionis; Jean Surdej; Marguerite Pierre; Spyros Basilakos; L. Chiappetti; Poshak Gandhi; Eric Gosset; O. V. Melnyk; Florian Pacaud;Our aim is to study the large-scale structure of different types of AGN using the medium-deep XMM-LSS survey. We measure the two-point angular correlation function of ~ 5700 and 2500 X-ray point-like sources over the ~ 11 sq. deg. XMM-LSS field in the soft (0.5-2 keV) and hard (2-10 keV) bands. For the conversion from the angular to the spatial correlation function we used the Limber integral equation and the luminosity-dependent density evolution model of the AGN X-ray luminosity function. We have found significant angular correlations with the power-law parameters gamma = 1.81 +/- 0.02, theta_0 = 1.3" +/- 0.2" for the soft, and gamma = 2.00 +/- 0.04, theta_0 = 7.3" +/- 1.0" for the hard bands. The amplitude of the correlation function w(theta) is higher in the hard than in the soft band for f_x < 10^-14 erg s^-1 cm^-2 and lower above this flux limit. We confirm that the clustering strength theta_0 grows with the flux limit of the sample, a trend which is also present in the amplitude of the spatial correlation function, but only for the soft band. In the hard band, it remains almost constant with r_0 = 10h^-1$ Mpc, irrespective of the flux limit. Our analysis of AGN subsamples with different hardness ratios shows that the sources with a hard-spectrum are more clustered than soft-spectrum ones. This result may be a hint that the two main types of AGN populate different environments. Finally, we find that our clustering results correspond to an X-ray selected AGN bias factor of ~ 2.5 for the soft-band sources (at a median z = 1.1) and ~ 3.3 for the hard-band sources (at a median z = 1), which translates into a host dark matter halo mass of ~ 10^13 h^-1 M_o and ~ 10^13.7 h^-1 M_o for the soft and hard bands, respectively. 14 pages, 27 figures, accepted for publication in Astronomy and Astrophysics
Astronomy and Astrop... arrow_drop_down https://doi.org/10.48550/arxiv...Article . 2011License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1051/0004-6361/201117983&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 31 citations 31 popularity Top 10% influence Average impulse Top 10% Powered by BIP!more_vert Astronomy and Astrop... arrow_drop_down https://doi.org/10.48550/arxiv...Article . 2011License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1051/0004-6361/201117983&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Article 2006 France, Belgium, France, FrancePublisher:Springer Science and Business Media LLC Publicly fundedD. Van Rooij; Dominique Blamart; Thomas G. Richter; Andrew J. Wheeler; M. Kozachenko; Jean-Pierre Henriet;handle: 1854/LU-353346
The Belgica cold-water coral banks on the eastern slope of the Porcupine Seabight are closely associated with bottom currents. In order to better understand the local temporal and spatial characteristics, as well as the palaeoclimatologic influences, a 26 m long core, taken on a small contourite drift, was studied. This sediment record of approximately 100 ka BP reveals new insights into the regional glacial and sedimentary processes, which are intrinsically linked to several geological, climatological, biological and hydrodynamic variables. The glacial sequences in the core contain six ice-rafting events (IRE). They are comparable with the North Atlantic Heinrich Events, although their characteristics show dominant influences from the proximal British-Irish Ice Sheet (BIIS). These IRE have a low magnetic susceptibility and are deposited during two or three ice-rafting pulses. The record of ice-rafting suggests a millennial-scaled BIIS destabilisation and confirms the start of a final retreat about 25 ka ago. Additionally, the glacial sequence corresponds to a muddy contourite, influenced by bottom-current strength variations during interstadials, possibly triggered by sporadic reintroductions of Mediterranean Outflow Water in a glacial North Atlantic Ocean. The interglacial sequence features an 11-m thick deep-water massive sand unit, probably deposited under a high-energy bottom-current regime.
ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2007Data sources: ArchiMer - Institutional Archive of IfremerGhent University Academic BibliographyArticle . 2007Data sources: Ghent University Academic BibliographyInternational Journal of Earth SciencesArticle . 2006 . Peer-reviewedLicense: Springer TDMData sources: CrossrefGhent University Academic BibliographyArticle . 2007Data sources: Ghent University Academic Bibliographyadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s00531-006-0086-6&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 49 citations 49 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!more_vert ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2007Data sources: ArchiMer - Institutional Archive of IfremerGhent University Academic BibliographyArticle . 2007Data sources: Ghent University Academic BibliographyInternational Journal of Earth SciencesArticle . 2006 . Peer-reviewedLicense: Springer TDMData sources: CrossrefGhent University Academic BibliographyArticle . 2007Data sources: Ghent University Academic Bibliographyadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s00531-006-0086-6&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2020 Belgium, FrancePublisher:Springer Science and Business Media LLC Augustin Dekoninck; Gilles Ruffet; Yves Missenard; Oriane Parizot; Mohamed Magoua; Abdellah Mouttaqi; Gaëtan Rochez; Johan Yans;The eastern part of the Souss Basin (Morocco) contains several Mn deposits in the Tasdremt district. ThreeMn orebodies occur withinthe Cenomanian-Turonian dolostones and the Senonian (Coniacian to Maastrichtian) detrital series, the main orebody being located atthe boundary between them. The Mn ores consist of coronadite group minerals, mostly coronadite and hollandite, in a karstifieddolostone. New field observations, petrographic analyses, and geochemical data define the Tasdremt deposits as a karst-hostedaccumulation (11–60 wt.% Mn), particularly enriched in Ba (1.5–8.2 wt.%) and Pb (1.0–5.0 wt.%) with poor contaminations in Al,Fe, and P. This study shows that the ore-forming process is similar to that occurring in the Imini C3 level, located ~ 100 kmto the northeast.Such similarities with the high-grade pyrolusite-bearing ore suggest that the Tasdremt deposit is a lateral equivalent of the Iminideposits. However, the scarcity of pyrolusite in Tasdremt results in lower Mn grades, the Tasdremt ores being considered an aborted/incomplete system in comparison with the Imini deposits. 40Ar/39Ar geochronology of K-bearing Mn oxides yields late Cretaceousages, defining three phases at ~ 91.5 Ma, ~ 77.5–82 Ma, and ~ 65–67 Ma. Although the source of metals remains hypothetical,mineralizing fluids were carried by O2-free groundwater that mixed with O2-rich shallow meteoric waters at the Tasdremt depositionalsite. The dissolution of the host dolostones and the karst environment have provided suitable conditions for the precipitation of Mnoxides, causing the coeval increase of pH and Eh, respectively. The Early Atlasic deformation during the Late Cretaceous is associatedwith mineralization events and was responsible for creation of low stand reliefs from Tasdremt to Imini. This period enabledkarstification and mineralization. Connecting the Tasdremt deposits to other African Mn deposits is difficult since the latter consistof laterite resting above PaleoproterozoicMn protores, and consequently formed under different conditions from karst-hosted deposits.It is likely that other Mn occurrences formed along the Atlas belt in similar settings.
Mineralium Deposita;... arrow_drop_down Mineralium Deposita; Hal-DiderotArticle . 2021add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s00126-020-01017-0&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesbronze 6 citations 6 popularity Top 10% influence Average impulse Top 10% Powered by BIP!more_vert Mineralium Deposita;... arrow_drop_down Mineralium Deposita; Hal-DiderotArticle . 2021add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s00126-020-01017-0&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint , Other literature type 2020 France, United Kingdom, Netherlands, France, United Kingdom, Germany, Belgium, Belgium, United KingdomPublisher:Copernicus GmbH Funded by:NSF | The Management and Operat..., NSF | Collaborative Research: I..., NWO | Perturbations of System E... +1 projectsNSF| The Management and Operation of the National Center for Atmoshperic Research (NCAR) ,NSF| Collaborative Research: Ice sheet sensitivity in a changing Arctic system - using data and modeling to test the stable Greenland Ice Sheet hypothesis ,NWO| Perturbations of System Earth: Reading the Past to Project the Future - A proposal to create the Netherlands Earth System Science Centre (ESSC) ,EC| ERA-PLANETH. Goelzer; H. Goelzer; H. Goelzer; S. Nowicki; A. Payne; E. Larour; H. Seroussi; W. H. Lipscomb; J. Gregory; J. Gregory; A. Abe-Ouchi; A. Shepherd; E. Simon; C. Agosta; P. Alexander; P. Alexander; A. Aschwanden; A. Barthel; R. Calov; C. Chambers; Y. Choi; Y. Choi; J. Cuzzone; C. Dumas; T. Edwards; D. Felikson; X. Fettweis; N. R. Golledge; R. Greve; R. Greve; A. Humbert; A. Humbert; P. Huybrechts; S. Le clec'h; V. Lee; G. Leguy; C. Little; D. P. Lowry; M. Morlighem; I. Nias; I. Nias; I. Nias; A. Quiquet; M. Rückamp; N.-J. Schlegel; D. A. Slater; D. A. Slater; R. S. Smith; F. Straneo; L. Tarasov; R. van de Wal; R. van de Wal; M. van den Broeke;Abstract. The Greenland ice sheet is one of the largest contributors to global meansea-level rise today and is expected to continue to lose mass as the Arcticcontinues to warm. The two predominant mass loss mechanisms are increasedsurface meltwater run-off and mass loss associated with the retreat ofmarine-terminating outlet glaciers. In this paper we use a large ensemble ofGreenland ice sheet models forced by output from a representative subset ofthe Coupled Model Intercomparison Project (CMIP5) global climate models to project ice sheet changes and sea-level risecontributions over the 21st century. The simulations are part of theIce Sheet Model Intercomparison Project for CMIP6 (ISMIP6). We estimate thesea-level contribution together with uncertainties due to future climateforcing, ice sheet model formulations and ocean forcing for the twogreenhouse gas concentration scenarios RCP8.5 and RCP2.6. The resultsindicate that the Greenland ice sheet will continue to lose mass in bothscenarios until 2100, with contributions of 90±50 and 32±17 mm to sea-level rise for RCP8.5 and RCP2.6, respectively. The largestmass loss is expected from the south-west of Greenland, which is governed bysurface mass balance changes, continuing what is already observed today.Because the contributions are calculated against an unforced controlexperiment, these numbers do not include any committed mass loss, i.e. massloss that would occur over the coming century if the climate forcingremained constant. Under RCP8.5 forcing, ice sheet model uncertaintyexplains an ensemble spread of 40 mm, while climate model uncertainty andocean forcing uncertainty account for a spread of 36 and 19 mm,respectively. Apart from those formally derived uncertainty ranges, thelargest gap in our knowledge is about the physical understanding andimplementation of the calving process, i.e. the interaction of the ice sheetwith the ocean. info:eu-repo/semantics/published
CORE (RIOXX-UK Aggre... arrow_drop_down NARCIS; Utrecht University RepositoryArticle . 2020St Andrews Research RepositoryArticle . 2020 . Peer-reviewedData sources: St Andrews Research RepositoryElectronic Publication Information CenterArticle . 2020Data sources: Electronic Publication Information CenterVrije Universiteit Brussel Research PortalOther literature type . 2020Data sources: Vrije Universiteit Brussel Research Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5194/tc-2019-319&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 140 citations 140 popularity Top 1% influence Top 10% impulse Top 0.1% Powered by BIP!visibility 10visibility views 10 download downloads 30 Powered bymore_vert CORE (RIOXX-UK Aggre... arrow_drop_down NARCIS; Utrecht University RepositoryArticle . 2020St Andrews Research RepositoryArticle . 2020 . Peer-reviewedData sources: St Andrews Research RepositoryElectronic Publication Information CenterArticle . 2020Data sources: Electronic Publication Information CenterVrije Universiteit Brussel Research PortalOther literature type . 2020Data sources: Vrije Universiteit Brussel Research Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5194/tc-2019-319&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2011 Germany, Argentina, FrancePublisher:Springer Science and Business Media LLC Bruno Sicardy; Jose Luis Ortiz; Marcelo Assafin; Emmanuel Jehin; Alain Maury; E. Lellouch; R. Gil Hutton; Felipe Braga-Ribas; François Colas; Daniel Hestroffer; J. Lecacheux; F. Roques; P. Santos-Sanz; Thomas Widemann; Nicolás Morales; Rene Duffard; Audrey Thirouin; A. J. Castro-Tirado; Martin Jelínek; Petr Kubánek; Alfredo Sota; R. Sanchez-Ramirez; Alexandre Humberto Andrei; Julio Camargo; D. N. da Silva Neto; A. Ramos Gomes; R. Vieira Martins; Michaël Gillon; Jean Manfroid; G. P. Tozzi; C. Harlingten; S. Saravia; Raoul Behrend; Stefano Mottola; E. García Melendo; V. Peris; Juan Fabregat; José M. Madiedo; L. Cuesta; M. T. Eibe; A. Ullán; F. Organero; S. Pastor; J.A. de los Reyes; S. Pedraz; A. Castro; I. de la Cueva; G. Muler; Iain A. Steele; M. Cebrián; Pilar Montañés-Rodríguez; Alejandro Oscoz; D. Weaver; C. Jacques; W. J. B. Corradi; Fabio P. Santos; Wilson Reis; A. Milone; Marcelo Emilio; L. Gutiérrez; Roberto Vázquez; H. Hernández-Toledo;The dwarf planet Eris is a trans-Neptunian object with an orbital eccentricity of 0.44, an inclination of 44 degrees and a surface composition very similar to that of Pluto. It resides at present at 95.7 astronomical units (1ĝ€‰au is the Earth-Sun distance) from Earth, near its aphelion and more than three times farther than Pluto. Owing to this great distance, measuring its size or detecting a putative atmosphere is difficult. Here we report the observation of a multi-chord stellar occultation by Eris on 6 November 2010 ut. The event is consistent with a spherical shape for Eris, with radius 1,163±6 kilometres, density 2.52±0.05 grams per cm 3 and a high visible geometric albedo,. No nitrogen, argon or methane atmospheres are detected with surface pressure larger than about 10,000 times more tenuous than Pluto's present atmosphere. As Pluto's radius is estimated to be between 1,150 and 1,200 kilometres, Eris appears as a Pluto twin, with a bright surface possibly caused by a collapsed atmosphere, owing to its cold environment. We anticipate that this atmosphere may periodically sublimate as Eris approaches its perihelion, at 37.8 astronomical units from the Sun. © 2011 Macmillan Publishers Limited. All rights reserved. Fil: Sicardy, B.. Universite Pierre et Marie Curie; Francia. Institut Universitaire de France; Francia Fil: Ortiz, J.L.. Consejo Superior de Investigaciones Científicas; España Fil: Assafin, M.. Universidade Federal do Rio de Janeiro; Brasil Fil: Jehin, E.. Université de Liège; Bélgica Fil: Maury, A.. San Pedro de Atacama Celestial Explorations; Chile Fil: Lellouch, E.. Universite Pierre et Marie Curie; Francia Fil: Gil Hutton, Ricardo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico ; Argentina Fil: Braga Ribas, F.. Universite Pierre et Marie Curie; Francia. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil Fil: Colas, F.. Universite Pierre et Marie Curie; Francia Fil: Hestroffer, D.. Universite Pierre et Marie Curie; Francia Fil: Lecacheux, J.. Universite Pierre et Marie Curie; Francia Fil: Roques, F.. Universite Pierre et Marie Curie; Francia Fil: Santos-Sanz, P.. Universite Pierre et Marie Curie; Francia Fil: Widemann, T.. Universite Pierre et Marie Curie; Francia Fil: Morales, N.. Consejo Superior de Investigaciones Científicas; España Fil: Duffard, R.. Consejo Superior de Investigaciones Científicas; España Fil: Thirouin, A.. Consejo Superior de Investigaciones Científicas; España Fil: Castro-Tirado, A.J.. Consejo Superior de Investigaciones Científicas; España Fil: Jelínek, M.. Consejo Superior de Investigaciones Científicas; España Fil: Kubánek, P.. Consejo Superior de Investigaciones Científicas; España Fil: Sota, A.. Consejo Superior de Investigaciones Científicas; España Fil: Sánchez-Ramírez, R.. Consejo Superior de Investigaciones Científicas; España Fil: Andrei, A.H.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil. Universidade Federal do Rio de Janeiro; Brasil Fil: Camargo, J.I.B.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil. Universidade Federal do Rio de Janeiro; Brasil Fil: Da Silva Neto, D.N.. Centro Universitário Estadual Da Zona Oeste; . Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil Fil: Gomes Jr., A. Ramos. Universidade Federal do Rio de Janeiro; Brasil Fil: Martins, R. Vieira. Universite Pierre et Marie Curie; Francia. Universidade Federal do Rio de Janeiro; Brasil. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil Fil: Gillon, M.. Université de Liège; Bélgica Fil: Manfroid, J.. Université de Liège; Bélgica Fil: Tozzi, G.P.. Osservatorio Astrofisico di Arcetri; Italia Fil: Harlingten, C.. Caisey Harlingten Observatory; Reino Unido Fil: Saravia, S.. San Pedro de Atacama Celestial Explorations; Chile Fil: Behrend, R.. Universidad de Ginebra; Suiza Fil: Mottola, S.. German Aerospace Center; Alemania Fil: Melendo, E. García. Universitat Autònoma de Barcelona; España. Consejo Superior de Investigaciones Científicas; España Fil: Peris, V.. Universidad de Valencia; España Fil: Fabregat, J.. Universidad de Valencia; España Fil: Madiedo, J.M.. Universidad de Huelva; España Fil: Cuesta, L.. Consejo Superior de Investigaciones Científicas; España Fil: Eibe, M.T.. Consejo Superior de Investigaciones Científicas; España Fil: Ullán, A.. Consejo Superior de Investigaciones Científicas; España Fil: Organero, F.. Observatorio astronómico de La Hita; España Fil: Pastor, S.. Observatorio de la Murta; España Fil: De Los Reyes, J.A.. Observatorio de la Murta; España Fil: Pedraz, S.. Centro Astronómico Hispano Alemán; España Fil: Castro, A.. Centro Cultural José María Gutiérrez Romero; España Fil: De La Cueva, I.. Astroimagen; España Fil: Muler, G.. Observatorio Nazaret; España Fil: Steele, I.A.. Liverpool JMU; Reino Unido Fil: Cebrián, M.. Instituto Astrofisico de Canarias; Fil: Montañés-Rodríguez, P.. Instituto Astrofisico de Canarias; España Fil: Oscoz, A.. Instituto Astrofisico de Canarias; España Fil: Weaver, D.. Observatório Astronomico Christus; Brasil Fil: Jacques, C.. Observatório CEAMIG-REA; Brasil Fil: Corradi, W.J.B.. Universidade Federal do Minas Gerais; Brasil Fil: Santos, F.P.. Universidade Federal do Minas Gerais; Brasil Fil: Reis, W.. Universidade Federal do Minas Gerais; Brasil Fil: Milone, A.. Instituto Nacional de Pesquisas Espaciais; Brasil Fil: Emilio, M.. Universidade Estadual de Ponta Grossa; Brasil Fil: Gutiérrez, L.. Universidad Nacional Autónoma de México; México Fil: Vázquez, R.. Universidad Nacional Autónoma de México; México Fil: Hernández Toledo, H.. Universidad Nacional Autónoma de México; México
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1038/nature10550&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 144 citations 144 popularity Top 1% influence Top 10% impulse Top 10% Powered by BIP!visibility 5visibility views 5 Powered bymore_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1038/nature10550&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Article , Preprint 2012 Belgium, FrancePublisher:Copernicus GmbH Funded by:EC | AMAZALERTEC| AMAZALERTM. De Weirdt; Hans Verbeeck; Fabienne Maignan; Philippe Peylin; Benjamin Poulter; Damien Bonal; P. Ciais; Kathy Steppe;handle: 1854/LU-2983424
Abstract. The influence of seasonal phenology on canopy photosynthesis in tropical evergreen forests remains poorly understood, and its representation in global ecosystem models is highly simplified, typically with no seasonal variation of canopy leaf properties taken into account. Including seasonal variation in leaf age and photosynthetic capacity could improve the correspondence of global vegetation model outputs with the wet–dry season CO2 patterns measured at flux tower sites in these forests. We introduced a leaf litterfall dynamics scheme in the global terrestrial ecosystem model ORCHIDEE based on seasonal variations in net primary production (NPP), resulting in higher leaf turnover in periods of high productivity. The modifications in the leaf litterfall scheme induce seasonal variation in leaf age distribution and photosynthetic capacity. We evaluated the results of the modification against seasonal patterns of three long-term in-situ leaf litterfall datasets of evergreen tropical forests in Panama, French Guiana and Brazil. In addition, we evaluated the impact of the model improvements on simulated latent heat (LE) and gross primary productivity (GPP) fluxes for the flux tower sites Guyaflux (French Guiana) and Tapajós (km 67, Brazil). The results show that the introduced seasonal leaf litterfall corresponds well with field inventory leaf litter data and times with its seasonality. Although the simulated litterfall improved substantially by the model modifications, the impact on the modelled fluxes remained limited. The seasonal pattern of GPP improved clearly for the Guyaflux site, but no significant improvement was obtained for the Tapajós site. The seasonal pattern of the modelled latent heat fluxes was hardly changed and remained consistent with the observed fluxes. We conclude that we introduced a realistic and generic litterfall dynamics scheme, but that other processes need to be improved in the model to achieve better simulations of GPP seasonal patterns for tropical evergreen forests.
Geoscientific Model ... arrow_drop_down Geoscientific Model Development (GMD)Other literature type . 2018Data sources: Copernicus PublicationsGeoscientific Model Development; Ghent University Academic BibliographyOther literature type . Article . 2012 . Peer-reviewedLicense: CC BYGhent University Academic BibliographyArticle . 2012Data sources: Ghent University Academic BibliographyMémoires en Sciences de l'Information et de la Communication; HAL-CEA; HAL-IRD; HAL-UPMCArticle . 2012License: CC BYFull-Text: https://hal.science/hal-01268369/documentHAL - UPEC / UPEM; HAL-Pasteur; HAL-InsermArticle . 2012add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5194/gmdd-5-639-2012&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 52 citations 52 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!more_vert Geoscientific Model ... arrow_drop_down Geoscientific Model Development (GMD)Other literature type . 2018Data sources: Copernicus PublicationsGeoscientific Model Development; Ghent University Academic BibliographyOther literature type . Article . 2012 . Peer-reviewedLicense: CC BYGhent University Academic BibliographyArticle . 2012Data sources: Ghent University Academic BibliographyMémoires en Sciences de l'Information et de la Communication; HAL-CEA; HAL-IRD; HAL-UPMCArticle . 2012License: CC BYFull-Text: https://hal.science/hal-01268369/documentHAL - UPEC / UPEM; HAL-Pasteur; HAL-InsermArticle . 2012add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5194/gmdd-5-639-2012&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2005 FrancePublisher:American Geophysical Union (AGU) Authors: Berger, André; Loutre, Marie-France; Mélice, Jean-Luc;Berger, André; Loutre, Marie-France; Mélice, Jean-Luc;doi: 10.1029/2005pa001173
Investigations during the last 25 years have demonstrated that the astronomically related 19‐, 23‐, and 41‐kyr quasiperiodicities actually occur in long records of the Quaternary climate. However, the same investigations also identified the largest climatic cycle as being about 100 kyr long. As the 100‐kyr variations in standing insolation due to eccentricity change are too small, they cannot be the direct cause of the ice ages. This is the reason why most of the modeling studies attempting to explain the relation between the astronomical forcing and climatic change have focused on this 100‐kyr cycle. In this paper, we will show the astronomical origin of the periods at about 100 kyr that characterize the long‐term variations of eccentricity, of its first derivative, of the frequency modulation of obliquity, and of the inclination of the Earth's orbit on the invariable plane of reference. Five independent values are found between 95 and 107 kyr, and a wavelet signature is suggested to test the possible relationships between the astronomical and climatic variables. Proxy records from deep‐sea cores and European Programme for Ice Coring in Antarctica ice core and modeling results from the Louvain‐la‐Neuve two‐dimensional model are used for illustration.
Paleoceanography arrow_drop_down PaleoceanographyArticle . 2005 . Peer-reviewedLicense: Wiley Online Library User AgreementData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1029/2005pa001173&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesbronze 47 citations 47 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!more_vert Paleoceanography arrow_drop_down PaleoceanographyArticle . 2005 . Peer-reviewedLicense: Wiley Online Library User AgreementData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1029/2005pa001173&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu
Loading
description Publicationkeyboard_double_arrow_right Article 2013 FrancePublisher:Czech Geological Survey Authors: Le Hérissé, Alain; Paris, Florentin; Steemans, Philippe;Le Hérissé, Alain; Paris, Florentin; Steemans, Philippe;Well preserved assemblages of cryptospores, chitinozoans, acritarchs, leiospheres, tasmanitids, colonies of Gloeocapsomorpha, scolecodonts and eurypterid fragments from 23 core samples of the Moussegouda core hole in the Erdi Basin, northern Chad, and from two samples from well KW-2 in Kufra Basin, South East Libya are investigated. These palynomorphs were recovered from the southernmost North African marine deposits of Late Ordovician and possibly early Silurian age. The palaeoenvironment evolves from late Hirnantian glacio-marine diamictites to silt-dominated sequences suggesting a marginal marine environment of possibly latest Hirnantian to earliest Rhuddanian age (post-elongata-pre-fragilis chitinozoan assemblages). The recovered palynomorph assemblages are compared and correlated with contemporaneous assemblages recorded in other northern Gondwana localities (Mauritania, Morocco Algeria, Libya, Africa, Saudi Arabia, Jordan), and in South Africa, in order to evaluate possible effects of the ice cap melting on palynomorph assemblages and sedimentation. Our goal is also to improve the regional biostratigraphy across the Ordovician-Silurian boundary. The composition of the recovered palynomorph assemblages, with mixed terrestrial and marine microflora, suggests that the topmost Ordovician or earliest Silurian in northern Chad and southeastern Libya, reflects nearshore conditions, with obvious fresh water influences. The lack of black shale or grey shale in the uppermost Ordovician and of “hot shale” in the lower Silurian in these areas, and their replacement by siltstones, are probably related to an isostatic readjustment that rapidly starved the marine sedimentation in the areas previously overlain by a thick ice cover during the climax of the Hirnantian glaciation. Tasmanites tzadiensis Le Herisse sp. nov. and Euconochitina moussegoudaensis Paris sp. nov., two new palynomorphs of biostratigraphical interest are described and illustrated.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3140/bull.geosci.1383&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 31 citations 31 popularity Top 10% influence Average impulse Top 10% Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.3140/bull.geosci.1383&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2018 FrancePublisher:Elsevier BV Laura Lamair; Aurélia Hubert-Ferrari; Shinya Yamamoto; Meriam El Ouahabi; Jacqueline Vander Auwera; Stephen P Obrochta; Evelien Boes; Atsunori Nakamura; Osamu Fujiwara; Masanobu Shishikura; Sabine Schmidt; Giuseppe Siani; Yosuke Miyairi; Yusuke Yokoyama; Marc De Batist; Vanessa M.A. Heyvaert;Abstract Lacustrine sediments are particularly sensitive to modifications within the lake catchment. In a volcanic area, sedimentation rates are directly affected by the history of the volcano and its eruptions. Here, we investigate the impact of Mt. Fuji Volcano (Japan) on Lake Motosu and its watershed. The lacustrine infill is studied by combining seismic reflection profiles and sediment cores. We show evidence of changes in sedimentation patterns during the depositional history of Lake Motosu. The frequency of large mass-transport deposits recorded within the lake decreases over the Holocene. Before ~ 8000 cal yr BP, large sublacustrine landslides and turbidites were filling the lacustrine depression. After 8000 cal yr BP, only one large sublacustrine landslide was recorded. The change in sedimentation pattern coincides with a change in sediment accumulation rate. Over the last 8000 cal yr BP, the sediment accumulation rate was not sufficient enough to produce large sublacustrine slope failures. Consequently, the frequency of large mass-transport deposits decreased and only turbidites resulting from surficial slope reworking occurred. These constitute the main sedimentary infill of the deep basin. We link the change in sediment accumulation rate with (i) climate and vegetation changes; and (ii) the Mt. Fuji eruptions which affected the Lake Motosu watershed by reducing its size and strongly modified its topography. Moreover, this study highlights that the deposition of turbidites in the deep basin of Lake Motosu is mainly controlled by the paleobathymetry of the lakefloor. Two large mass-transport deposits, occurring around ~ 8000 cal yr BP and ~ 2000 cal yr BP respectively, modified the paleobathymetry of the lakefloor and therefore changed the turbidite depositional pattern of Lake Motosu.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.sedgeo.2017.11.010&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesbronze 5 citations 5 popularity Average influence Average impulse Average Powered by BIP!more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.sedgeo.2017.11.010&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2021 Netherlands, Belgium, FrancePublisher:Elsevier BV Leon T. Hauser; Jean-Baptiste Féret; Nguyen An Binh; Niels van der Windt; Ângelo Filipe dos Reis Pereira e Cortinhas Sil; J. Timmermans; Nadejda A. Soudzilovskaia; Peter M. van Bodegom;Large-scale high-resolution satellite observations of plant functional diversity patterns will greatly benefit our ability to study ecosystem functioning. Here, we demonstrate a potentially scalable approach that uses aggregate plant traits estimated from radiative transfer model (RTM) inversion of Sentinel-2 satellite images to calculate community patterns of plant functional diversity. Trait retrieval relied on simulations and Look-up Tables (LUTs) generated by a RTM rather than heavily depending on a priori field data and data-driven statistical learning. This independence from in-situ training data benefits its scalability as relevant field data remains scarce and difficult to acquire. We ran a total of three different inversion algorithms that are representative of commonly applied approaches and we used two different metrics to calculate functional diversity. In tandem with Sentinel-2 image-based estimation of plant traits, we measured Leaf Area Index (LAI), leaf Chlorophyll content (CAB), and Leaf Mass per Area (LMA) in-situ in a (semi-)natural heterogeneous landscape (Montesinho region) located in northern Portugal. Sampling plots were scaled and georeferenced to match the satellite observed pixels and thereby allowed for a direct one-to-one posterior ground truth validation of individual traits and functional diversity. Across approaches, we observe a reasonable correspondence between the satellite-based retrievals and the insitu observations in terms of the relative distribution of individual trait means and plant functional diversity across locations despite the heterogeneity of the landscape and canopies. The functional diversity estimates, based on a combination of canopy and leaf traits, were robust against estimation biases in trait means. Particularly, the convex hull volume estimate of functional diversity showed strong concordance with in-situ observations across all three inversion methods (Spearman's rho: 0.67-0.80). The remotely sensed estimates of functional diversity also related to in-situ taxonomic diversity (Spearman's rho: 0.55-0.63). Our work highlights the potential and challenges of RTM-based functional diversity metrics to study spatial community-level ecological patterns using currently operational and publicly available Sentinel-2 imagery. While further validation and assessment across different ecosystems and larger datasets are needed, the study contributes towards a further maturation of scalable, spatially, and temporally explicit methods for functional diversity assessments from space. The authors would like to acknowledge Christian Rossi, Prof. Geof-frey M. Henebry, and the anonymous reviewers for their valuable comments and suggestions that greatly improved the manuscript. This work was supported financially by the Ecology Fund of the RoyalNetherlands Academy of Arts and Sciences (‘KNAW Fonds Ecologie’; KNAWWF/807/19011). We thank Altino Geraldes, Joao Carlos Aze-vedo, and the local farmers and foresters in the Montesinho-Nogueira Natura 2000 site for their help and collaboration. We thank Emilie Didaskalou for her lab assistance. J.-B. F ́eret acknowledges financial support from Agence Nationale de la Recherche (BioCop project—ANR- 17-32CE-0001).
NARCIS arrow_drop_down Leiden University Scholarly Publications RepositoryOther literature type . 2021License: CC BYData sources: Leiden University Scholarly Publications RepositoryMémoires en Sciences de l'Information et de la Communication; Hal-DiderotArticle . 2021License: CC BYFull-Text: https://hal.inrae.fr/hal-03245246/documentadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.rse.2021.112505&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 23 citations 23 popularity Top 10% influence Average impulse Top 10% Powered by BIP!more_vert NARCIS arrow_drop_down Leiden University Scholarly Publications RepositoryOther literature type . 2021License: CC BYData sources: Leiden University Scholarly Publications RepositoryMémoires en Sciences de l'Information et de la Communication; Hal-DiderotArticle . 2021License: CC BYFull-Text: https://hal.inrae.fr/hal-03245246/documentadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.rse.2021.112505&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint 2012 FrancePublisher:EDP Sciences Andrii Elyiv; N. Clerc; Manolis Plionis; Jean Surdej; Marguerite Pierre; Spyros Basilakos; L. Chiappetti; Poshak Gandhi; Eric Gosset; O. V. Melnyk; Florian Pacaud;Our aim is to study the large-scale structure of different types of AGN using the medium-deep XMM-LSS survey. We measure the two-point angular correlation function of ~ 5700 and 2500 X-ray point-like sources over the ~ 11 sq. deg. XMM-LSS field in the soft (0.5-2 keV) and hard (2-10 keV) bands. For the conversion from the angular to the spatial correlation function we used the Limber integral equation and the luminosity-dependent density evolution model of the AGN X-ray luminosity function. We have found significant angular correlations with the power-law parameters gamma = 1.81 +/- 0.02, theta_0 = 1.3" +/- 0.2" for the soft, and gamma = 2.00 +/- 0.04, theta_0 = 7.3" +/- 1.0" for the hard bands. The amplitude of the correlation function w(theta) is higher in the hard than in the soft band for f_x < 10^-14 erg s^-1 cm^-2 and lower above this flux limit. We confirm that the clustering strength theta_0 grows with the flux limit of the sample, a trend which is also present in the amplitude of the spatial correlation function, but only for the soft band. In the hard band, it remains almost constant with r_0 = 10h^-1$ Mpc, irrespective of the flux limit. Our analysis of AGN subsamples with different hardness ratios shows that the sources with a hard-spectrum are more clustered than soft-spectrum ones. This result may be a hint that the two main types of AGN populate different environments. Finally, we find that our clustering results correspond to an X-ray selected AGN bias factor of ~ 2.5 for the soft-band sources (at a median z = 1.1) and ~ 3.3 for the hard-band sources (at a median z = 1), which translates into a host dark matter halo mass of ~ 10^13 h^-1 M_o and ~ 10^13.7 h^-1 M_o for the soft and hard bands, respectively. 14 pages, 27 figures, accepted for publication in Astronomy and Astrophysics
Astronomy and Astrop... arrow_drop_down https://doi.org/10.48550/arxiv...Article . 2011License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1051/0004-6361/201117983&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 31 citations 31 popularity Top 10% influence Average impulse Top 10% Powered by BIP!more_vert Astronomy and Astrop... arrow_drop_down https://doi.org/10.48550/arxiv...Article . 2011License: arXiv Non-Exclusive DistributionData sources: Dataciteadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1051/0004-6361/201117983&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Article 2006 France, Belgium, France, FrancePublisher:Springer Science and Business Media LLC Publicly fundedD. Van Rooij; Dominique Blamart; Thomas G. Richter; Andrew J. Wheeler; M. Kozachenko; Jean-Pierre Henriet;handle: 1854/LU-353346
The Belgica cold-water coral banks on the eastern slope of the Porcupine Seabight are closely associated with bottom currents. In order to better understand the local temporal and spatial characteristics, as well as the palaeoclimatologic influences, a 26 m long core, taken on a small contourite drift, was studied. This sediment record of approximately 100 ka BP reveals new insights into the regional glacial and sedimentary processes, which are intrinsically linked to several geological, climatological, biological and hydrodynamic variables. The glacial sequences in the core contain six ice-rafting events (IRE). They are comparable with the North Atlantic Heinrich Events, although their characteristics show dominant influences from the proximal British-Irish Ice Sheet (BIIS). These IRE have a low magnetic susceptibility and are deposited during two or three ice-rafting pulses. The record of ice-rafting suggests a millennial-scaled BIIS destabilisation and confirms the start of a final retreat about 25 ka ago. Additionally, the glacial sequence corresponds to a muddy contourite, influenced by bottom-current strength variations during interstadials, possibly triggered by sporadic reintroductions of Mediterranean Outflow Water in a glacial North Atlantic Ocean. The interglacial sequence features an 11-m thick deep-water massive sand unit, probably deposited under a high-energy bottom-current regime.
ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2007Data sources: ArchiMer - Institutional Archive of IfremerGhent University Academic BibliographyArticle . 2007Data sources: Ghent University Academic BibliographyInternational Journal of Earth SciencesArticle . 2006 . Peer-reviewedLicense: Springer TDMData sources: CrossrefGhent University Academic BibliographyArticle . 2007Data sources: Ghent University Academic Bibliographyadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s00531-006-0086-6&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 49 citations 49 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!more_vert ArchiMer - Instituti... arrow_drop_down ArchiMer - Institutional Archive of IfremerOther literature type . 2007Data sources: ArchiMer - Institutional Archive of IfremerGhent University Academic BibliographyArticle . 2007Data sources: Ghent University Academic BibliographyInternational Journal of Earth SciencesArticle . 2006 . Peer-reviewedLicense: Springer TDMData sources: CrossrefGhent University Academic BibliographyArticle . 2007Data sources: Ghent University Academic Bibliographyadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s00531-006-0086-6&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2020 Belgium, FrancePublisher:Springer Science and Business Media LLC Augustin Dekoninck; Gilles Ruffet; Yves Missenard; Oriane Parizot; Mohamed Magoua; Abdellah Mouttaqi; Gaëtan Rochez; Johan Yans;The eastern part of the Souss Basin (Morocco) contains several Mn deposits in the Tasdremt district. ThreeMn orebodies occur withinthe Cenomanian-Turonian dolostones and the Senonian (Coniacian to Maastrichtian) detrital series, the main orebody being located atthe boundary between them. The Mn ores consist of coronadite group minerals, mostly coronadite and hollandite, in a karstifieddolostone. New field observations, petrographic analyses, and geochemical data define the Tasdremt deposits as a karst-hostedaccumulation (11–60 wt.% Mn), particularly enriched in Ba (1.5–8.2 wt.%) and Pb (1.0–5.0 wt.%) with poor contaminations in Al,Fe, and P. This study shows that the ore-forming process is similar to that occurring in the Imini C3 level, located ~ 100 kmto the northeast.Such similarities with the high-grade pyrolusite-bearing ore suggest that the Tasdremt deposit is a lateral equivalent of the Iminideposits. However, the scarcity of pyrolusite in Tasdremt results in lower Mn grades, the Tasdremt ores being considered an aborted/incomplete system in comparison with the Imini deposits. 40Ar/39Ar geochronology of K-bearing Mn oxides yields late Cretaceousages, defining three phases at ~ 91.5 Ma, ~ 77.5–82 Ma, and ~ 65–67 Ma. Although the source of metals remains hypothetical,mineralizing fluids were carried by O2-free groundwater that mixed with O2-rich shallow meteoric waters at the Tasdremt depositionalsite. The dissolution of the host dolostones and the karst environment have provided suitable conditions for the precipitation of Mnoxides, causing the coeval increase of pH and Eh, respectively. The Early Atlasic deformation during the Late Cretaceous is associatedwith mineralization events and was responsible for creation of low stand reliefs from Tasdremt to Imini. This period enabledkarstification and mineralization. Connecting the Tasdremt deposits to other African Mn deposits is difficult since the latter consistof laterite resting above PaleoproterozoicMn protores, and consequently formed under different conditions from karst-hosted deposits.It is likely that other Mn occurrences formed along the Atlas belt in similar settings.
Mineralium Deposita;... arrow_drop_down Mineralium Deposita; Hal-DiderotArticle . 2021add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s00126-020-01017-0&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesbronze 6 citations 6 popularity Top 10% influence Average impulse Top 10% Powered by BIP!more_vert Mineralium Deposita;... arrow_drop_down Mineralium Deposita; Hal-DiderotArticle . 2021add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1007/s00126-020-01017-0&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint , Other literature type 2020 France, United Kingdom, Netherlands, France, United Kingdom, Germany, Belgium, Belgium, United KingdomPublisher:Copernicus GmbH Funded by:NSF | The Management and Operat..., NSF | Collaborative Research: I..., NWO | Perturbations of System E... +1 projectsNSF| The Management and Operation of the National Center for Atmoshperic Research (NCAR) ,NSF| Collaborative Research: Ice sheet sensitivity in a changing Arctic system - using data and modeling to test the stable Greenland Ice Sheet hypothesis ,NWO| Perturbations of System Earth: Reading the Past to Project the Future - A proposal to create the Netherlands Earth System Science Centre (ESSC) ,EC| ERA-PLANETH. Goelzer; H. Goelzer; H. Goelzer; S. Nowicki; A. Payne; E. Larour; H. Seroussi; W. H. Lipscomb; J. Gregory; J. Gregory; A. Abe-Ouchi; A. Shepherd; E. Simon; C. Agosta; P. Alexander; P. Alexander; A. Aschwanden; A. Barthel; R. Calov; C. Chambers; Y. Choi; Y. Choi; J. Cuzzone; C. Dumas; T. Edwards; D. Felikson; X. Fettweis; N. R. Golledge; R. Greve; R. Greve; A. Humbert; A. Humbert; P. Huybrechts; S. Le clec'h; V. Lee; G. Leguy; C. Little; D. P. Lowry; M. Morlighem; I. Nias; I. Nias; I. Nias; A. Quiquet; M. Rückamp; N.-J. Schlegel; D. A. Slater; D. A. Slater; R. S. Smith; F. Straneo; L. Tarasov; R. van de Wal; R. van de Wal; M. van den Broeke;Abstract. The Greenland ice sheet is one of the largest contributors to global meansea-level rise today and is expected to continue to lose mass as the Arcticcontinues to warm. The two predominant mass loss mechanisms are increasedsurface meltwater run-off and mass loss associated with the retreat ofmarine-terminating outlet glaciers. In this paper we use a large ensemble ofGreenland ice sheet models forced by output from a representative subset ofthe Coupled Model Intercomparison Project (CMIP5) global climate models to project ice sheet changes and sea-level risecontributions over the 21st century. The simulations are part of theIce Sheet Model Intercomparison Project for CMIP6 (ISMIP6). We estimate thesea-level contribution together with uncertainties due to future climateforcing, ice sheet model formulations and ocean forcing for the twogreenhouse gas concentration scenarios RCP8.5 and RCP2.6. The resultsindicate that the Greenland ice sheet will continue to lose mass in bothscenarios until 2100, with contributions of 90±50 and 32±17 mm to sea-level rise for RCP8.5 and RCP2.6, respectively. The largestmass loss is expected from the south-west of Greenland, which is governed bysurface mass balance changes, continuing what is already observed today.Because the contributions are calculated against an unforced controlexperiment, these numbers do not include any committed mass loss, i.e. massloss that would occur over the coming century if the climate forcingremained constant. Under RCP8.5 forcing, ice sheet model uncertaintyexplains an ensemble spread of 40 mm, while climate model uncertainty andocean forcing uncertainty account for a spread of 36 and 19 mm,respectively. Apart from those formally derived uncertainty ranges, thelargest gap in our knowledge is about the physical understanding andimplementation of the calving process, i.e. the interaction of the ice sheetwith the ocean. info:eu-repo/semantics/published
CORE (RIOXX-UK Aggre... arrow_drop_down NARCIS; Utrecht University RepositoryArticle . 2020St Andrews Research RepositoryArticle . 2020 . Peer-reviewedData sources: St Andrews Research RepositoryElectronic Publication Information CenterArticle . 2020Data sources: Electronic Publication Information CenterVrije Universiteit Brussel Research PortalOther literature type . 2020Data sources: Vrije Universiteit Brussel Research Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5194/tc-2019-319&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 140 citations 140 popularity Top 1% influence Top 10% impulse Top 0.1% Powered by BIP!visibility 10visibility views 10 download downloads 30 Powered bymore_vert CORE (RIOXX-UK Aggre... arrow_drop_down NARCIS; Utrecht University RepositoryArticle . 2020St Andrews Research RepositoryArticle . 2020 . Peer-reviewedData sources: St Andrews Research RepositoryElectronic Publication Information CenterArticle . 2020Data sources: Electronic Publication Information CenterVrije Universiteit Brussel Research PortalOther literature type . 2020Data sources: Vrije Universiteit Brussel Research Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5194/tc-2019-319&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type 2011 Germany, Argentina, FrancePublisher:Springer Science and Business Media LLC Bruno Sicardy; Jose Luis Ortiz; Marcelo Assafin; Emmanuel Jehin; Alain Maury; E. Lellouch; R. Gil Hutton; Felipe Braga-Ribas; François Colas; Daniel Hestroffer; J. Lecacheux; F. Roques; P. Santos-Sanz; Thomas Widemann; Nicolás Morales; Rene Duffard; Audrey Thirouin; A. J. Castro-Tirado; Martin Jelínek; Petr Kubánek; Alfredo Sota; R. Sanchez-Ramirez; Alexandre Humberto Andrei; Julio Camargo; D. N. da Silva Neto; A. Ramos Gomes; R. Vieira Martins; Michaël Gillon; Jean Manfroid; G. P. Tozzi; C. Harlingten; S. Saravia; Raoul Behrend; Stefano Mottola; E. García Melendo; V. Peris; Juan Fabregat; José M. Madiedo; L. Cuesta; M. T. Eibe; A. Ullán; F. Organero; S. Pastor; J.A. de los Reyes; S. Pedraz; A. Castro; I. de la Cueva; G. Muler; Iain A. Steele; M. Cebrián; Pilar Montañés-Rodríguez; Alejandro Oscoz; D. Weaver; C. Jacques; W. J. B. Corradi; Fabio P. Santos; Wilson Reis; A. Milone; Marcelo Emilio; L. Gutiérrez; Roberto Vázquez; H. Hernández-Toledo;The dwarf planet Eris is a trans-Neptunian object with an orbital eccentricity of 0.44, an inclination of 44 degrees and a surface composition very similar to that of Pluto. It resides at present at 95.7 astronomical units (1ĝ€‰au is the Earth-Sun distance) from Earth, near its aphelion and more than three times farther than Pluto. Owing to this great distance, measuring its size or detecting a putative atmosphere is difficult. Here we report the observation of a multi-chord stellar occultation by Eris on 6 November 2010 ut. The event is consistent with a spherical shape for Eris, with radius 1,163±6 kilometres, density 2.52±0.05 grams per cm 3 and a high visible geometric albedo,. No nitrogen, argon or methane atmospheres are detected with surface pressure larger than about 10,000 times more tenuous than Pluto's present atmosphere. As Pluto's radius is estimated to be between 1,150 and 1,200 kilometres, Eris appears as a Pluto twin, with a bright surface possibly caused by a collapsed atmosphere, owing to its cold environment. We anticipate that this atmosphere may periodically sublimate as Eris approaches its perihelion, at 37.8 astronomical units from the Sun. © 2011 Macmillan Publishers Limited. All rights reserved. Fil: Sicardy, B.. Universite Pierre et Marie Curie; Francia. Institut Universitaire de France; Francia Fil: Ortiz, J.L.. Consejo Superior de Investigaciones Científicas; España Fil: Assafin, M.. Universidade Federal do Rio de Janeiro; Brasil Fil: Jehin, E.. Université de Liège; Bélgica Fil: Maury, A.. San Pedro de Atacama Celestial Explorations; Chile Fil: Lellouch, E.. Universite Pierre et Marie Curie; Francia Fil: Gil Hutton, Ricardo Alfredo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico ; Argentina Fil: Braga Ribas, F.. Universite Pierre et Marie Curie; Francia. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil Fil: Colas, F.. Universite Pierre et Marie Curie; Francia Fil: Hestroffer, D.. Universite Pierre et Marie Curie; Francia Fil: Lecacheux, J.. Universite Pierre et Marie Curie; Francia Fil: Roques, F.. Universite Pierre et Marie Curie; Francia Fil: Santos-Sanz, P.. Universite Pierre et Marie Curie; Francia Fil: Widemann, T.. Universite Pierre et Marie Curie; Francia Fil: Morales, N.. Consejo Superior de Investigaciones Científicas; España Fil: Duffard, R.. Consejo Superior de Investigaciones Científicas; España Fil: Thirouin, A.. Consejo Superior de Investigaciones Científicas; España Fil: Castro-Tirado, A.J.. Consejo Superior de Investigaciones Científicas; España Fil: Jelínek, M.. Consejo Superior de Investigaciones Científicas; España Fil: Kubánek, P.. Consejo Superior de Investigaciones Científicas; España Fil: Sota, A.. Consejo Superior de Investigaciones Científicas; España Fil: Sánchez-Ramírez, R.. Consejo Superior de Investigaciones Científicas; España Fil: Andrei, A.H.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil. Universidade Federal do Rio de Janeiro; Brasil Fil: Camargo, J.I.B.. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil. Universidade Federal do Rio de Janeiro; Brasil Fil: Da Silva Neto, D.N.. Centro Universitário Estadual Da Zona Oeste; . Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil Fil: Gomes Jr., A. Ramos. Universidade Federal do Rio de Janeiro; Brasil Fil: Martins, R. Vieira. Universite Pierre et Marie Curie; Francia. Universidade Federal do Rio de Janeiro; Brasil. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil Fil: Gillon, M.. Université de Liège; Bélgica Fil: Manfroid, J.. Université de Liège; Bélgica Fil: Tozzi, G.P.. Osservatorio Astrofisico di Arcetri; Italia Fil: Harlingten, C.. Caisey Harlingten Observatory; Reino Unido Fil: Saravia, S.. San Pedro de Atacama Celestial Explorations; Chile Fil: Behrend, R.. Universidad de Ginebra; Suiza Fil: Mottola, S.. German Aerospace Center; Alemania Fil: Melendo, E. García. Universitat Autònoma de Barcelona; España. Consejo Superior de Investigaciones Científicas; España Fil: Peris, V.. Universidad de Valencia; España Fil: Fabregat, J.. Universidad de Valencia; España Fil: Madiedo, J.M.. Universidad de Huelva; España Fil: Cuesta, L.. Consejo Superior de Investigaciones Científicas; España Fil: Eibe, M.T.. Consejo Superior de Investigaciones Científicas; España Fil: Ullán, A.. Consejo Superior de Investigaciones Científicas; España Fil: Organero, F.. Observatorio astronómico de La Hita; España Fil: Pastor, S.. Observatorio de la Murta; España Fil: De Los Reyes, J.A.. Observatorio de la Murta; España Fil: Pedraz, S.. Centro Astronómico Hispano Alemán; España Fil: Castro, A.. Centro Cultural José María Gutiérrez Romero; España Fil: De La Cueva, I.. Astroimagen; España Fil: Muler, G.. Observatorio Nazaret; España Fil: Steele, I.A.. Liverpool JMU; Reino Unido Fil: Cebrián, M.. Instituto Astrofisico de Canarias; Fil: Montañés-Rodríguez, P.. Instituto Astrofisico de Canarias; España Fil: Oscoz, A.. Instituto Astrofisico de Canarias; España Fil: Weaver, D.. Observatório Astronomico Christus; Brasil Fil: Jacques, C.. Observatório CEAMIG-REA; Brasil Fil: Corradi, W.J.B.. Universidade Federal do Minas Gerais; Brasil Fil: Santos, F.P.. Universidade Federal do Minas Gerais; Brasil Fil: Reis, W.. Universidade Federal do Minas Gerais; Brasil Fil: Milone, A.. Instituto Nacional de Pesquisas Espaciais; Brasil Fil: Emilio, M.. Universidade Estadual de Ponta Grossa; Brasil Fil: Gutiérrez, L.. Universidad Nacional Autónoma de México; México Fil: Vázquez, R.. Universidad Nacional Autónoma de México; México Fil: Hernández Toledo, H.. Universidad Nacional Autónoma de México; México
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1038/nature10550&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen bronze 144 citations 144 popularity Top 1% influence Top 10% impulse Top 10% Powered by BIP!visibility 5visibility views 5 Powered bymore_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1038/nature10550&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Article , Preprint 2012 Belgium, FrancePublisher:Copernicus GmbH Funded by:EC | AMAZALERTEC| AMAZALERTM. De Weirdt; Hans Verbeeck; Fabienne Maignan; Philippe Peylin; Benjamin Poulter; Damien Bonal; P. Ciais; Kathy Steppe;handle: 1854/LU-2983424
Abstract. The influence of seasonal phenology on canopy photosynthesis in tropical evergreen forests remains poorly understood, and its representation in global ecosystem models is highly simplified, typically with no seasonal variation of canopy leaf properties taken into account. Including seasonal variation in leaf age and photosynthetic capacity could improve the correspondence of global vegetation model outputs with the wet–dry season CO2 patterns measured at flux tower sites in these forests. We introduced a leaf litterfall dynamics scheme in the global terrestrial ecosystem model ORCHIDEE based on seasonal variations in net primary production (NPP), resulting in higher leaf turnover in periods of high productivity. The modifications in the leaf litterfall scheme induce seasonal variation in leaf age distribution and photosynthetic capacity. We evaluated the results of the modification against seasonal patterns of three long-term in-situ leaf litterfall datasets of evergreen tropical forests in Panama, French Guiana and Brazil. In addition, we evaluated the impact of the model improvements on simulated latent heat (LE) and gross primary productivity (GPP) fluxes for the flux tower sites Guyaflux (French Guiana) and Tapajós (km 67, Brazil). The results show that the introduced seasonal leaf litterfall corresponds well with field inventory leaf litter data and times with its seasonality. Although the simulated litterfall improved substantially by the model modifications, the impact on the modelled fluxes remained limited. The seasonal pattern of GPP improved clearly for the Guyaflux site, but no significant improvement was obtained for the Tapajós site. The seasonal pattern of the modelled latent heat fluxes was hardly changed and remained consistent with the observed fluxes. We conclude that we introduced a realistic and generic litterfall dynamics scheme, but that other processes need to be improved in the model to achieve better simulations of GPP seasonal patterns for tropical evergreen forests.
Geoscientific Model ... arrow_drop_down Geoscientific Model Development (GMD)Other literature type . 2018Data sources: Copernicus PublicationsGeoscientific Model Development; Ghent University Academic BibliographyOther literature type . Article . 2012 . Peer-reviewedLicense: CC BYGhent University Academic BibliographyArticle . 2012Data sources: Ghent University Academic BibliographyMémoires en Sciences de l'Information et de la Communication; HAL-CEA; HAL-IRD; HAL-UPMCArticle . 2012License: CC BYFull-Text: https://hal.science/hal-01268369/documentHAL - UPEC / UPEM; HAL-Pasteur; HAL-InsermArticle . 2012add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5194/gmdd-5-639-2012&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 52 citations 52 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!more_vert Geoscientific Model ... arrow_drop_down Geoscientific Model Development (GMD)Other literature type . 2018Data sources: Copernicus PublicationsGeoscientific Model Development; Ghent University Academic BibliographyOther literature type . Article . 2012 . Peer-reviewedLicense: CC BYGhent University Academic BibliographyArticle . 2012Data sources: Ghent University Academic BibliographyMémoires en Sciences de l'Information et de la Communication; HAL-CEA; HAL-IRD; HAL-UPMCArticle . 2012License: CC BYFull-Text: https://hal.science/hal-01268369/documentHAL - UPEC / UPEM; HAL-Pasteur; HAL-InsermArticle . 2012add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5194/gmdd-5-639-2012&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2005 FrancePublisher:American Geophysical Union (AGU) Authors: Berger, André; Loutre, Marie-France; Mélice, Jean-Luc;Berger, André; Loutre, Marie-France; Mélice, Jean-Luc;doi: 10.1029/2005pa001173
Investigations during the last 25 years have demonstrated that the astronomically related 19‐, 23‐, and 41‐kyr quasiperiodicities actually occur in long records of the Quaternary climate. However, the same investigations also identified the largest climatic cycle as being about 100 kyr long. As the 100‐kyr variations in standing insolation due to eccentricity change are too small, they cannot be the direct cause of the ice ages. This is the reason why most of the modeling studies attempting to explain the relation between the astronomical forcing and climatic change have focused on this 100‐kyr cycle. In this paper, we will show the astronomical origin of the periods at about 100 kyr that characterize the long‐term variations of eccentricity, of its first derivative, of the frequency modulation of obliquity, and of the inclination of the Earth's orbit on the invariable plane of reference. Five independent values are found between 95 and 107 kyr, and a wavelet signature is suggested to test the possible relationships between the astronomical and climatic variables. Proxy records from deep‐sea cores and European Programme for Ice Coring in Antarctica ice core and modeling results from the Louvain‐la‐Neuve two‐dimensional model are used for illustration.
Paleoceanography arrow_drop_down PaleoceanographyArticle . 2005 . Peer-reviewedLicense: Wiley Online Library User AgreementData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1029/2005pa001173&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesbronze 47 citations 47 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!more_vert Paleoceanography arrow_drop_down PaleoceanographyArticle . 2005 . Peer-reviewedLicense: Wiley Online Library User AgreementData sources: Crossrefadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1029/2005pa001173&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu