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description Publicationkeyboard_double_arrow_right Article , Preprint 2023 FrancePublisher:Society of Exploration Geophysicists Operto, S.; Amestoy, P.; Aghamiry, H. S.; Beller, S.; Buttari, A.; Combe, L.; Dolean, V.; Gerest, M.; Guo, G.; Jolivet, P.; L'Excellent, J. -Y.; Mamfoumbi, F.; Mary, T.; Puglisi, C.; Ribodetti, A.; Tournier, P. -H.;Frequency-domain full-waveform inversion (FWI) is potentially amenable to efficient processing of full-azimuth long-offset stationary-recording seabed acquisition carried out with a sparse layout of ocean-bottom nodes (OBNs) and broadband sources because the inversion can be performed with a few discrete frequencies. However, computing the solution of the forward (boundary-value) problem efficiently in the frequency domain with linear algebra solvers remains a challenge for large computational domains involving tens to hundreds of millions of parameters. We illustrate the feasibility of 3D frequency-domain FWI with a subset of the 2015/2016 Gorgon OBN data set in the North West Shelf, Australia. We solve the forward problem with the massively parallel multifrontal direct solver MUMPS, which includes four key features to reach high computational efficiency: an efficient parallelism combining message-passing interface and multithreading, block low-rank compression, mixed-precision arithmetic, and efficient processing of sparse sources. The Gorgon subdata set involves 650 OBNs that are processed as reciprocal sources and 400,000 sources. Monoparameter FWI for vertical wavespeed is performed in the viscoacoustic vertically transverse isotropic approximation with a classical frequency continuation approach proceeding from a starting frequency of 1.7 Hz to a final frequency of 13 Hz. The target covers an area ranging from 260 km2 (frequency ≥ 8.5 Hz) to 705 km2 (frequency ≤ 8.5 Hz) for a maximum depth of 8 km. Compared to the starting model, FWI dramatically improves the reconstruction of the bounding faults of the Gorgon horst at reservoir depths as well as several intrahorst faults and several horizons of the Mungaroo Formation down to a depth of 7 km. Seismic modeling reveals a good kinematic agreement between recorded and simulated data, but amplitude mismatches between the recorded and simulated reflection from the reservoir suggest elastic effects. Therefore, future works involve multiparameter reconstruction for density and attenuation before considering elastic FWI from hydrophone and geophone data.
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=10.1190/tle42030173.1&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 3 citations 3 popularity Top 10% 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=10.1190/tle42030173.1&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Article , Preprint 2023 Belgium, Italy, United Kingdom, France, United States, United States, Switzerland, FrancePublisher:Springer Science and Business Media LLC Funded by:EC | EXOCONDENSE, UKRI | STFC Bristol Physics 2021...EC| EXOCONDENSE ,UKRI| STFC Bristol Physics 2021 DTPAlderson, Lili; Wakeford, Hannah R; Alam, Munazza K; Batalha, Natasha E; Lothringer, Joshua D; Adams Redai, Jea; Barat, Saugata; Brande, Jonathan; Damiano, Mario; Daylan, Tansu; Espinoza, Néstor; Flagg, Laura; Goyal, Jayesh M; Grant, David; Hu, Renyu; Inglis, Julie; Lee, Elspeth KH; Mikal-Evans, Thomas; Ramos-Rosado, Lakeisha; Roy, Pierre-Alexis; Wallack, Nicole L; Batalha, Natalie M; Bean, Jacob L; Benneke, Björn; Berta-Thompson, Zachory K; Carter, Aarynn L; Changeat, Quentin; Colón, Knicole D; Crossfield, Ian JM; Désert, Jean-Michel; Foreman-Mackey, Daniel; Gibson, Neale P; Kreidberg, Laura; Line, Michael R; López-Morales, Mercedes; Molaverdikhani, Karan; Moran, Sarah E; Morello, Giuseppe; Moses, Julianne I; Mukherjee, Sagnick; Schlawin, Everett; Sing, David K; Stevenson, Kevin B; Taylor, Jake; Aggarwal, Keshav; Ahrer, Eva-Maria; Allen, Natalie H; Barstow, Joanna K; Bell, Taylor J; Blecic, Jasmina; Casewell, Sarah L; Chubb, Katy L; Crouzet, Nicolas; Cubillos, Patricio E; Decin, Leen; Feinstein, Adina D; Fortney, Joanthan J; Harrington, Joseph; Heng, Kevin; Iro, Nicolas; Kempton, Eliza M-R; Kirk, James; Knutson, Heather A; Krick, Jessica; Leconte, Jérémy; Lendl, Monika; MacDonald, Ryan J; Mancini, Luigi; Mansfield, Megan; May, Erin M; Mayne, Nathan J; Miguel, Yamila; Nikolov, Nikolay K; Ohno, Kazumasa; Palle, Enric; Parmentier, Vivien; Petit Dit De La Roche, Dominique JM; Piaulet, Caroline; Powell, Diana; Rackham, Benjamin V; Redfield, Seth; Rogers, Laura K; Rustamkulov, Zafar; Tan, Xianyu; Tremblin, P; Tsai, Shang-Min; Turner, Jake D; De Val-Borro, Miguel; Venot, Olivia; Welbanks, Luis; Wheatley, Peter J; Zhang, Xi;Measuring the abundances of carbon and oxygen in exoplanet atmospheres is considered a crucial avenue for unlocking the formation and evolution of exoplanetary systems. Access to an exoplanet's chemical inventory requires high-precision observations, often inferred from individual molecular detections with low-resolution space-based and high-resolution ground-based facilities. Here we report the medium-resolution (R$\sim$600) transmission spectrum of an exoplanet atmosphere between 3-5 $\mu$m covering multiple absorption features for the Saturn-mass exoplanet WASP-39b, obtained with JWST NIRSpec G395H. Our observations achieve 1.46x photon precision, providing an average transit depth uncertainty of 221 ppm per spectroscopic bin, and present minimal impacts from systematic effects. We detect significant absorption from CO$_2$ (28.5$\sigma$) and H$_2$O (21.5$\sigma$), and identify SO$_2$ as the source of absorption at 4.1 $\mu$m (4.8$\sigma$). Best-fit atmospheric models range between 3 and 10x solar metallicity, with sub-solar to solar C/O ratios. These results, including the detection of SO$_2$, underscore the importance of characterising the chemistry in exoplanet atmospheres, and showcase NIRSpec G395H as an excellent mode for time series observations over this critical wavelength range. Comment: 44 pages, 11 figures, 3 tables. Resubmitted after revision to Nature
Caltech Authors arrow_drop_down Nature; Archivio della Ricerca - Università di Roma Tor vergataArticle . 2023 . Peer-reviewedLicense: CC BYBern Open Repository and Information System (BORIS)Article . 2023 . Peer-reviewedData sources: Bern Open Repository and Information System (BORIS)St Andrews Research RepositoryArticle . 2023 . Peer-reviewedData sources: St Andrews Research RepositoryArchivio della Ricerca - Università di Roma Tor vergataArticle . 2023Data sources: Archivio della Ricerca - Università di Roma Tor vergataeScholarship - University of CaliforniaArticle . 2023Data sources: eScholarship - University of CaliforniaSpiral - Imperial College Digital RepositoryArticle . 2022License: CC BYData sources: Spiral - Imperial College Digital RepositoryINRIA a CCSD electronic archive server; Mémoires en Sciences de l'Information et de la Communication; HAL-CEAArticle . 2023License: CC BYFull-Text: https://hal.science/hal-04122511/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=10.1038/s41586-022-05591-3&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 57 citations 57 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!visibility 57visibility views 57 download downloads 7 Powered bymore_vert Caltech Authors arrow_drop_down Nature; Archivio della Ricerca - Università di Roma Tor vergataArticle . 2023 . Peer-reviewedLicense: CC BYBern Open Repository and Information System (BORIS)Article . 2023 . Peer-reviewedData sources: Bern Open Repository and Information System (BORIS)St Andrews Research RepositoryArticle . 2023 . Peer-reviewedData sources: St Andrews Research RepositoryArchivio della Ricerca - Università di Roma Tor vergataArticle . 2023Data sources: Archivio della Ricerca - Università di Roma Tor vergataeScholarship - University of CaliforniaArticle . 2023Data sources: eScholarship - University of CaliforniaSpiral - Imperial College Digital RepositoryArticle . 2022License: CC BYData sources: Spiral - Imperial College Digital RepositoryINRIA a CCSD electronic archive server; Mémoires en Sciences de l'Information et de la Communication; HAL-CEAArticle . 2023License: CC BYFull-Text: https://hal.science/hal-04122511/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=10.1038/s41586-022-05591-3&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint 2023 FrancePublisher:Elsevier BV Funded by:UKRI | REFLOW: Renewable Energy ..., UKRI | Smart Seat-Manufacturing ...UKRI| REFLOW: Renewable Energy from Fish Lipid Oil Waste ,UKRI| Smart Seat-Manufacturing (SSM) – Digitally Automated Quality-Driven Finishing ProcessElise Basquin; Apolline El Baz; Jacques Sainte-Marie; Alain Rabaute; Maud Thomas; Sara Lafuerza; Abdelmounim El M'rini; Denis Mercier; Elia d’Acremont; Marie-Odile Bristeau; Axel Creach;International audience; The Alboran Basin may be subject to tsunami hazards. If such an event were to occur, it is expected that the urbanised and densely populated areas of northern Moroccan coastline would be affected. Precise inundation hazard maps are needed for tsunami risk management in this region. In this article, we argue that the diversity of hazard mapping methods ensures the robustness of the scientific knowledge about the exposure of a territory. Hence, the main objective of this study is to analyse the exposure of the plain of Martil (north of Morocco), by using four hazard mapping methods to create inundation maps for two scenarios of tsunamis generated by extreme submarine mass failure (SMF) in the Alboran Sea, of 0.9 km3 and 3.8 km3 respectively. A digital terrain model of the plain was used to explore four methods of inundation mapping. The static method identified 4.32 km2 and 19.83 km2 of flooded areas for each scenario using water height values as inundation thresholds. The hybrid and the volumetric methods use the volume of water to determine the inundation extent. For the first scenario, 3.51 km2 of the plain were inundated using the hybrid method, and 20.11 km2 for the second scenario. The results of the volumetric methods are 2.32 km2 and 7.82 km2 respectively for the first and second scenario. Finally, the fourth method relies on numerical hydrodynamic modelling of tsunami inundation (Freshkiss3d® code). With this method, 4.55 km2 of the plain were flooded in the first scenario, and 24.12 km2 for the second. The comparison of the results highlights that the most sensitive areas to tsunami inundation are the lowest topographic ones, being the beaches and the wadis floodplains. This result raises questions on the current coastal development and the preparedness of its population, thus calling for more attention to engage on tsunami risk management related questions.
Natural Hazards Rese... arrow_drop_down INRIA a CCSD electronic archive server; Mémoires en Sciences de l'Information et de la Communication; HAL-IRDArticle . 2023License: CC BY NC NDFull-Text: https://hal.science/hal-04134599/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=10.2139/ssrn.4418728&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert Natural Hazards Rese... arrow_drop_down INRIA a CCSD electronic archive server; Mémoires en Sciences de l'Information et de la Communication; HAL-IRDArticle . 2023License: CC BY NC NDFull-Text: https://hal.science/hal-04134599/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=10.2139/ssrn.4418728&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Preprint , Article 2023Embargo end date: 01 Jan 2023 FrancePublisher:arXiv Authors: Febvre, Quentin; Sommer, Julien Le; Ubelmann, Clément; Fablet, Ronan;Febvre, Quentin; Sommer, Julien Le; Ubelmann, Clément; Fablet, Ronan;International audience; Satellite altimetry combined with data assimilation and optimal interpolation schemes have deeply renewed our ability to monitor sea surface dynamics. Recently, deep learning (DL) schemes have emerged as appealing solutions to address space-time interpolation problems. The scarcity of real altimetry dataset, in terms of space-time coverage of the sea surface, however impedes the training of state-of-the-art neural schemes on real-world case-studies. Here, we leverage both simulations of ocean dynamics and satellite altimeters to train simulation-based neural mapping schemes for the sea surface height and demonstrate their performance for real altimetry datasets. We analyze further how the ocean simulation dataset used during the training phase impacts this performance. This experimental analysis covers both the resolution from eddy-present configurations to eddy-rich ones, forced simulations vs. reanalyses using data assimilation and tide-free vs. tide-resolving simulations. Our benchmarking framework focuses on a Gulf Stream region for a realistic 5-altimeter constellation using NEMO ocean simulations and 4DVarNet mapping schemes. All simulation-based 4DVarNets outperform the operational observation-driven and reanalysis products, namely DUACS and GLORYS. The more realistic the ocean simulation dataset used during the training phase, the better the mapping. The best 4DVarNet mapping was trained from an eddy-rich and tide-free simulation datasets. It improves the resolved longitudinal scale from 151 kilometers for DUACS and 241 kilometers for GLORYS to 98 kilometers and reduces the root mean squared error (RMSE) by 23% and 61%. These results open research avenues for new synergies between ocean modelling and ocean observation using learning-based approaches.
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=10.48550/arxiv.2309.14350&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 0 citations 0 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=10.48550/arxiv.2309.14350&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Preprint , Article , Other literature type 2022 FrancePublisher:Copernicus GmbH Authors: Maxime Beauchamp; Quentin Febvre; Hugo Georgenthum; Ronan Fablet;Maxime Beauchamp; Quentin Febvre; Hugo Georgenthum; Ronan Fablet;Abstract. The reconstruction of sea surface currents from satellite altimeter data is a key challenge in spatial oceanography, especially with the upcoming wide-swath SWOT (Surface Water and Ocean and Topography) altimeter mission. Operational systems, however, generally fail to retrieve mesoscale dynamics for horizontal scales below 100 km and timescales below 10 d. Here, we address this challenge through the 4DVarnet framework, an end-to-end neural scheme backed on a variational data assimilation formulation. We introduce a parameterization of the 4DVarNet scheme dedicated to the space–time interpolation of satellite altimeter data. Within an observing system simulation experiment (NATL60), we demonstrate the relevance of the proposed approach, both for nadir and nadir plus SWOT altimeter configurations for two contrasting case study regions in terms of upper ocean dynamics. We report a relative improvement with respect to the operational optimal interpolation between 30 % and 60 % in terms of the reconstruction error. Interestingly, for the nadir plus SWOT altimeter configuration, we reach resolved space–timescales below 70 km and 7 d. The code is open source to enable reproducibility and future collaborative developments. Beyond its applicability to large-scale domains, we also address the uncertainty quantification issues and generalization properties of the proposed learning setting. We discuss further future research avenues and extensions to other ocean data assimilation and space oceanography challenges.
arXiv.org e-Print Ar... arrow_drop_down Geoscientific Model Development (GMD)Other literature type . 2022Data sources: Copernicus PublicationsGeoscientific Model Development (GMD)Other literature type . 2023Data sources: Copernicus Publicationshttps://doi.org/10.5194/gmd-20...Preprint . 2022 . Peer-reviewedLicense: CC BYData sources: CrossrefHAL-Rennes 1; INRIA a CCSD electronic archive server; Mémoires en Sciences de l'Information et de la CommunicationArticle . 2023License: CC BYFull-Text: https://hal.science/hal-04140934/documentMémoires en Sciences de l'Information et de la CommunicationPreprint . 2023add 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/gmd-2022-241&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 3 citations 3 popularity Top 10% influence Average impulse Average Powered by BIP!more_vert arXiv.org e-Print Ar... arrow_drop_down Geoscientific Model Development (GMD)Other literature type . 2022Data sources: Copernicus PublicationsGeoscientific Model Development (GMD)Other literature type . 2023Data sources: Copernicus Publicationshttps://doi.org/10.5194/gmd-20...Preprint . 2022 . Peer-reviewedLicense: CC BYData sources: CrossrefHAL-Rennes 1; INRIA a CCSD electronic archive server; Mémoires en Sciences de l'Information et de la CommunicationArticle . 2023License: CC BYFull-Text: https://hal.science/hal-04140934/documentMémoires en Sciences de l'Information et de la CommunicationPreprint . 2023add 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/gmd-2022-241&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint 2021 FrancePublisher:Copernicus GmbH Funded by:NSERCNSERCAuthors: Nicholas K.-R. Kevlahan; Florian Lemarié;Nicholas K.-R. Kevlahan; Florian Lemarié;This paper introduces wavetrisk-2.1 (i.e. wavetrisk-ocean), an incompressible version of the atmosphere model wavetrisk-1.x with free surface. This new model is built on the same wavelet-based dynamically adaptive core as wavetrisk, which itself uses dynamico's mimetic vector-invariant multilayer rotating shallow water formulation. Both codes use a Lagrangian vertical coordinate with conservative remapping. The ocean variant solves the incompressible multilayer shallow water equations with inhomogeneous density layers. Time integration uses barotropic–baroclinic mode splitting via an semi-implicit free surface formulation, which is about 34–44 times faster than an unsplit explicit time-stepping. The barotropic and baroclinic estimates of the free surface are reconciled at each time step using layer dilation. No slip boundary conditions at coastlines are approximated using volume penalization. The vertical eddy viscosity and diffusivity coefficients are computed from a closure model based on turbulent kinetic energy (TKE). Results are presented for a standard set of ocean model test cases adapted to the sphere (seamount, upwelling and baroclinic turbulence). An innovative feature of wavetrisk-ocean is that it could be coupled easily to the wavetrisk atmosphere model, thus providing a first building block toward an integrated Earth system model using a consistent modelling framework with dynamic mesh adaptivity and mimetic properties.
Geoscientific Model ... arrow_drop_down https://doi.org/10.5194/gmd-20...Preprint . 2021 . Peer-reviewedLicense: CC BYData 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=10.5194/gmd-2021-365&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 2 citations 2 popularity Average influence Average impulse Average Powered by BIP!more_vert Geoscientific Model ... arrow_drop_down https://doi.org/10.5194/gmd-20...Preprint . 2021 . Peer-reviewedLicense: CC BYData 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=10.5194/gmd-2021-365&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint 2021 FrancePublisher:Springer Science and Business Media LLC Authors: Franck Bourrier; Vincent Acary;Franck Bourrier; Vincent Acary;Block propagation models have been used for years for rockfall hazard assessment. However, the calibration of model parameters that allow the simulations to accurately predict rockfall trajectories for a given study site remains a key issue. This research aims at investigating the predictive capabilities of block propagation models after a preliminary calibration phase. It is focused on models integrating the shape of blocks since, despite their sound physical bases, they remain less used than lumped-mass approaches due to their more recent popularisation. Benefiting from both a recently built model integrating block shape, usable in 2D and 3D, and from recent experimental results at the slope scale, we first performed a calibration based on the use of the 2D model, and then we evaluated the predictive capabilities of the calibrated model in 2D and in 3D using the remaining part of the experimental results. The calibrated model simulations predict the main characteristics of the propagation, that is the preferential deposit zones and the ranges of velocities at specific locations. Good matches between simulations and experimental results in both the calibration and validation phases emphasizes the wide applicability of the model: after a calibration phase on a sufficient number of different soil types, the model may be used in a predictive manner. The good match between 2D and 3D simulations also highlights the ease-of-use of the model for field applications, as the 2D model produces sufficiently accurate results while also being easier and faster to calibrate. As classically observed for block propagation models, the model is not sufficient to predict the details of the velocity and stopping points but provides accurate predictions of the global ranges of these quantities, in particular of the extreme values. To lift these limitations in terms of predictive capabilities, more advanced calibration procedures based on optimization techniques constitute a promising path forward.
Rock Mechanics and R... arrow_drop_down Rock Mechanics and Rock EngineeringArticle . 2021 . Peer-reviewedLicense: Springer TDMData 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=10.1007/s00603-021-02696-5&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesbronze 4 citations 4 popularity Top 10% influence Average impulse Average Powered by BIP!more_vert Rock Mechanics and R... arrow_drop_down Rock Mechanics and Rock EngineeringArticle . 2021 . Peer-reviewedLicense: Springer TDMData 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=10.1007/s00603-021-02696-5&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint 2021 FrancePublisher:Springer Science and Business Media LLC Authors: d’Albis, Hippolyte; Coulibaly, Dramane; Roumagnac, Alix; de Carvalho Filho, Eurico; +1 Authorsd’Albis, Hippolyte; Coulibaly, Dramane; Roumagnac, Alix; de Carvalho Filho, Eurico; Bertrand, Raphaël;An estimation of the impact of climatic conditions—measured with an index that combines temperature and humidity, the IPTCC—on the hospitalizations and deaths attributed to SARS-CoV-2 is proposed. The present paper uses weekly data from 54 French administrative regions between March 23, 2020 and January 10, 2021. Firstly, a Granger causal analysis is developed and reveals that past values of the IPTCC contain information that allow for a better prediction of hospitalizations or deaths than that obtained without the IPTCC. Finally, a vector autoregressive model is estimated to evaluate the dynamic response of hospitalizations and deaths after an increase in the IPTCC. It is estimated that a 10-point increase in the IPTCC causes hospitalizations to rise by 2.9% (90% CI 0.7–5.0) one week after the increase, and by 4.1% (90% CI 2.1–6.4) and 4.4% (90% CI 2.5–6.3) in the two following weeks. Over ten weeks, the cumulative effect is estimated to reach 20.1%. Two weeks after the increase in the IPTCC, deaths are estimated to rise by 3.7% (90% CI 1.6–5.8). The cumulative effect from the second to the tenth weeks reaches 15.8%. The results are robust to the inclusion of air pollution indicators. International audience
HAL-ENS-LYON; Mémoir... arrow_drop_down Europe PubMed CentralArticle . 2021Full-Text: http://europepmc.org/articles/PMC8575948Data sources: PubMed Centraladd 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/s41598-021-01392-2&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 6 citations 6 popularity Top 10% influence Average impulse Top 10% Powered by BIP!more_vert HAL-ENS-LYON; Mémoir... arrow_drop_down Europe PubMed CentralArticle . 2021Full-Text: http://europepmc.org/articles/PMC8575948Data sources: PubMed Centraladd 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/s41598-021-01392-2&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Preprint 2021 Lithuania, Lithuania, Sweden, France, France, Italy, Netherlands, GermanyPublisher:Copernicus GmbH Githumbi, Esther; Fyfe, Ralph; Gaillard, Marie-Jose; Trondman, Anna-Kari; Mazier, Florence; Nielsen, Anne-Birgitte; Poska, Anneli; Sugita, Shinya; Woodbridge, Jessie; Azuara, Julien; Feurdean, Angelica; Grindean, Roxana; Lebreton, Vincent; Marquer, Laurent; Nebout-Combourieu, Nathalie; Stančikaitė, Miglė; Tanţău, Ioan; Tonkov, Spassimir; Shumilovskikh, Lyudmila; Åkesson, Christine; Balakauskas, Lauras; Batalova, Vlada; Birks, H. John B.; Bjune, Anne E.; Borisova, Olga; Bozilova, Elissaveta; Burjachs, Francesc; Cheddadi, Rachid; Christiansen, Jörg; David, Remi; de Klerk, Pim; Di Rita, Federico; Dörfler, Walter; Doyen, Elise; Eastwood, Warren; Etienne, David; Feeser, Ingo; Filipova-Marinova, Mariana; Fischer, Elske; Galop, Didier; Carrion, Jose Garcia Sebastian; Gauthier, Emilie; Giesecke, Thomas; Herking, Christa; Herzschuh, Ulrike; Jouffroy-Bapicot, Isabelle; Kasianova, Alisa; Kouli, Katerina; Kuneš, Petr; Lagerås, Per; Latałowa, Małgoržata; Lechterbeck, Jutta; Leroyer, Chantal; Leydet, Michelle; Lisytstina, Olga; Lukanina, Ekaterina; Magyari, Enikő; Marguerie, Dominique; Mariotti Lippi, Marta; Mensing, Scott; Mercuri, Anna Maria; Miebach, Andrea; Milburn, Paula; Miras, Yannick; del Molino, César Morales; Mrotzek, Almut; Nosova, Maria; Odgaard, Bent Vad; Overballe-Petersen, Mette; Panajiotidis, Sampson; Pavlov, Danail; Persson, Thomas; Pinke, Zsolt; Ruffaldi, Pascale; Sapelko, Tatyana; Schmidt, Monika; Schult, Manuela; Stivrins, Normunds; Tarasov, Pavel E.; Theuerkauf, Martin; Veski, Siim; Wick, Lucia; Wiethold, Julian; Woldring, Henk; Zernitskaya, Valentina;Quantitative reconstructions of past land cover are necessary to determine the processes involved in climate–human–land-cover interactions. We present the first temporally continuous and most spatially extensive pollen-based land-cover reconstruction for Europe over the Holocene (last 11 700 cal yr BP). We describe how vegetation cover has been quantified from pollen records at a 1∘ × 1∘ spatial scale using the “Regional Estimates of VEgetation Abundance from Large Sites” (REVEALS) model. REVEALS calculates estimates of past regional vegetation cover in proportions or percentages. REVEALS has been applied to 1128 pollen records across Europe and part of the eastern Mediterranean–Black Sea–Caspian corridor (30–75∘ N, 25∘ W–50∘ E) to reconstruct the percentage cover of 31 plant taxa assigned to 12 plant functional types (PFTs) and 3 land-cover types (LCTs). A new synthesis of relative pollen productivities (RPPs) for European plant taxa was performed for this reconstruction. It includes multiple RPP values (≥2 values) for 39 taxa and single values for 15 taxa (total of 54 taxa). To illustrate this, we present distribution maps for five taxa (Calluna vulgaris, Cerealia type (t)., Picea abies, deciduous Quercus t. and evergreen Quercus t.) and three land-cover types (open land, OL; evergreen trees, ETs; and summer-green trees, STs) for eight selected time windows. The reliability of the REVEALS reconstructions and issues related to the interpretation of the results in terms of landscape openness and human-induced vegetation change are discussed. This is followed by a review of the current use of this reconstruction and its future potential utility and development. REVEALS data quality are primarily determined by pollen count data (pollen count and sample, pollen identification, and chronology) and site type and number (lake or bog, large or small, one site vs. multiple sites) used for REVEALS analysis (for each grid cell). A large number of sites with high-quality pollen count data will produce more reliable land-cover estimates with lower standard errors compared to a low number of sites with lower-quality pollen count data. The REVEALS data presented here can be downloaded from https://doi.org/10.1594/PANGAEA.937075 (Fyfe et al., 2022).
Earth System Science... arrow_drop_down Earth System Science Data (ESSD); Institutional Repository of Nature Research Centre; Earth System Science Data; PURE Aarhus University; IRIS UNIMORE - Archivio istituzionale della ricerca - Università di Modena e Reggio EmiliaOther literature type . Article . 2022 . Peer-reviewedLicense: CC BYhttps://doi.org/10.5194/essd-2...Preprint . 2021 . Peer-reviewedLicense: CC BYData sources: CrossrefVilnius University Institutional RepositoryArticle . 2022Data sources: Vilnius University Institutional RepositoryDigitala Vetenskapliga Arkivet - Academic Archive On-lineArticle . 2022 . Peer-reviewedHAL-Rennes 1; Mémoires en Sciences de l'Information et de la CommunicationArticle . 2022License: CC BYFull-Text: https://hal.science/hal-03418785/documentGöttingen Research Online PublicationsArticle . 2022Data sources: Göttingen Research Online Publicationsadd 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.
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For further information contact us at helpdesk@openaire.euAccess Routeshybrid 38 citations 38 popularity Top 1% influence Average impulse Top 1% Powered by BIP!visibility 103visibility views 103 download downloads 105 Powered bymore_vert Earth System Science... arrow_drop_down Earth System Science Data (ESSD); Institutional Repository of Nature Research Centre; Earth System Science Data; PURE Aarhus University; IRIS UNIMORE - Archivio istituzionale della ricerca - Università di Modena e Reggio EmiliaOther literature type . Article . 2022 . Peer-reviewedLicense: CC BYhttps://doi.org/10.5194/essd-2...Preprint . 2021 . Peer-reviewedLicense: CC BYData sources: CrossrefVilnius University Institutional RepositoryArticle . 2022Data sources: Vilnius University Institutional RepositoryDigitala Vetenskapliga Arkivet - Academic Archive On-lineArticle . 2022 . Peer-reviewedHAL-Rennes 1; Mémoires en Sciences de l'Information et de la CommunicationArticle . 2022License: CC BYFull-Text: https://hal.science/hal-03418785/documentGöttingen Research Online PublicationsArticle . 2022Data sources: Göttingen Research Online Publicationsadd 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/essd-2021-269&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Preprint , Article 2021 FrancePublisher:University of South Florida Libraries Freydier, Perrine; Weber, Éric; Martin, Jérôme; Jeannin, Pierre-Yves; Guerrier, Béatrice; Doumenc, Frédéric;International audience; Vermiculations are aggregates of small particles commonly found on cave walls. They are a major concern for the conservation of painted caves, as they can potentially alter valuable prehistoric cave paintings. A previous rheological study of fine sediment deposits on cave walls revealed that this material can undergo a solid-to-liquid transition triggered by variations in the chemical composition of the water film on the wall. Such a transition could occur at the origin of vermiculations by allowing the sediment to flow under low mechanical stress. In this work, we provide quantitative information on the conditions leading to this transition and show the importance of the chemical composition of the water film on the cave walls. A complete understanding of the phenomenon will, however, require more field information. This includes monitoring of the evolution of vermiculations, for which we have developed a dedicated observation protocol. Based on the combination of photogrammetry and a geographic information system we were able to precisely map the walls of the Hall of Bulls in Lascaux cave from past and future photographs. To better understand the vermiculation process, pictures need to be taken regularly, and the chemical composition of the thin water film covering cave walls needs to be analyzed with a similar time step. The correlation between the evolution of vermiculations, the humidification phases of the walls, temperature changes and the chemical monitoring of the water film should shed new light on conditions triggering vermiculations
International Journa... arrow_drop_down 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=10.5038/1827-806x.50.3.2390&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 1 citations 1 popularity Average influence Average impulse Average Powered by BIP!more_vert International Journa... arrow_drop_down 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.
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description Publicationkeyboard_double_arrow_right Article , Preprint 2023 FrancePublisher:Society of Exploration Geophysicists Operto, S.; Amestoy, P.; Aghamiry, H. S.; Beller, S.; Buttari, A.; Combe, L.; Dolean, V.; Gerest, M.; Guo, G.; Jolivet, P.; L'Excellent, J. -Y.; Mamfoumbi, F.; Mary, T.; Puglisi, C.; Ribodetti, A.; Tournier, P. -H.;Frequency-domain full-waveform inversion (FWI) is potentially amenable to efficient processing of full-azimuth long-offset stationary-recording seabed acquisition carried out with a sparse layout of ocean-bottom nodes (OBNs) and broadband sources because the inversion can be performed with a few discrete frequencies. However, computing the solution of the forward (boundary-value) problem efficiently in the frequency domain with linear algebra solvers remains a challenge for large computational domains involving tens to hundreds of millions of parameters. We illustrate the feasibility of 3D frequency-domain FWI with a subset of the 2015/2016 Gorgon OBN data set in the North West Shelf, Australia. We solve the forward problem with the massively parallel multifrontal direct solver MUMPS, which includes four key features to reach high computational efficiency: an efficient parallelism combining message-passing interface and multithreading, block low-rank compression, mixed-precision arithmetic, and efficient processing of sparse sources. The Gorgon subdata set involves 650 OBNs that are processed as reciprocal sources and 400,000 sources. Monoparameter FWI for vertical wavespeed is performed in the viscoacoustic vertically transverse isotropic approximation with a classical frequency continuation approach proceeding from a starting frequency of 1.7 Hz to a final frequency of 13 Hz. The target covers an area ranging from 260 km2 (frequency ≥ 8.5 Hz) to 705 km2 (frequency ≤ 8.5 Hz) for a maximum depth of 8 km. Compared to the starting model, FWI dramatically improves the reconstruction of the bounding faults of the Gorgon horst at reservoir depths as well as several intrahorst faults and several horizons of the Mungaroo Formation down to a depth of 7 km. Seismic modeling reveals a good kinematic agreement between recorded and simulated data, but amplitude mismatches between the recorded and simulated reflection from the reservoir suggest elastic effects. Therefore, future works involve multiparameter reconstruction for density and attenuation before considering elastic FWI from hydrophone and geophone data.
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=10.1190/tle42030173.1&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 3 citations 3 popularity Top 10% 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=10.1190/tle42030173.1&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Article , Preprint 2023 Belgium, Italy, United Kingdom, France, United States, United States, Switzerland, FrancePublisher:Springer Science and Business Media LLC Funded by:EC | EXOCONDENSE, UKRI | STFC Bristol Physics 2021...EC| EXOCONDENSE ,UKRI| STFC Bristol Physics 2021 DTPAlderson, Lili; Wakeford, Hannah R; Alam, Munazza K; Batalha, Natasha E; Lothringer, Joshua D; Adams Redai, Jea; Barat, Saugata; Brande, Jonathan; Damiano, Mario; Daylan, Tansu; Espinoza, Néstor; Flagg, Laura; Goyal, Jayesh M; Grant, David; Hu, Renyu; Inglis, Julie; Lee, Elspeth KH; Mikal-Evans, Thomas; Ramos-Rosado, Lakeisha; Roy, Pierre-Alexis; Wallack, Nicole L; Batalha, Natalie M; Bean, Jacob L; Benneke, Björn; Berta-Thompson, Zachory K; Carter, Aarynn L; Changeat, Quentin; Colón, Knicole D; Crossfield, Ian JM; Désert, Jean-Michel; Foreman-Mackey, Daniel; Gibson, Neale P; Kreidberg, Laura; Line, Michael R; López-Morales, Mercedes; Molaverdikhani, Karan; Moran, Sarah E; Morello, Giuseppe; Moses, Julianne I; Mukherjee, Sagnick; Schlawin, Everett; Sing, David K; Stevenson, Kevin B; Taylor, Jake; Aggarwal, Keshav; Ahrer, Eva-Maria; Allen, Natalie H; Barstow, Joanna K; Bell, Taylor J; Blecic, Jasmina; Casewell, Sarah L; Chubb, Katy L; Crouzet, Nicolas; Cubillos, Patricio E; Decin, Leen; Feinstein, Adina D; Fortney, Joanthan J; Harrington, Joseph; Heng, Kevin; Iro, Nicolas; Kempton, Eliza M-R; Kirk, James; Knutson, Heather A; Krick, Jessica; Leconte, Jérémy; Lendl, Monika; MacDonald, Ryan J; Mancini, Luigi; Mansfield, Megan; May, Erin M; Mayne, Nathan J; Miguel, Yamila; Nikolov, Nikolay K; Ohno, Kazumasa; Palle, Enric; Parmentier, Vivien; Petit Dit De La Roche, Dominique JM; Piaulet, Caroline; Powell, Diana; Rackham, Benjamin V; Redfield, Seth; Rogers, Laura K; Rustamkulov, Zafar; Tan, Xianyu; Tremblin, P; Tsai, Shang-Min; Turner, Jake D; De Val-Borro, Miguel; Venot, Olivia; Welbanks, Luis; Wheatley, Peter J; Zhang, Xi;Measuring the abundances of carbon and oxygen in exoplanet atmospheres is considered a crucial avenue for unlocking the formation and evolution of exoplanetary systems. Access to an exoplanet's chemical inventory requires high-precision observations, often inferred from individual molecular detections with low-resolution space-based and high-resolution ground-based facilities. Here we report the medium-resolution (R$\sim$600) transmission spectrum of an exoplanet atmosphere between 3-5 $\mu$m covering multiple absorption features for the Saturn-mass exoplanet WASP-39b, obtained with JWST NIRSpec G395H. Our observations achieve 1.46x photon precision, providing an average transit depth uncertainty of 221 ppm per spectroscopic bin, and present minimal impacts from systematic effects. We detect significant absorption from CO$_2$ (28.5$\sigma$) and H$_2$O (21.5$\sigma$), and identify SO$_2$ as the source of absorption at 4.1 $\mu$m (4.8$\sigma$). Best-fit atmospheric models range between 3 and 10x solar metallicity, with sub-solar to solar C/O ratios. These results, including the detection of SO$_2$, underscore the importance of characterising the chemistry in exoplanet atmospheres, and showcase NIRSpec G395H as an excellent mode for time series observations over this critical wavelength range. Comment: 44 pages, 11 figures, 3 tables. Resubmitted after revision to Nature
Caltech Authors arrow_drop_down Nature; Archivio della Ricerca - Università di Roma Tor vergataArticle . 2023 . Peer-reviewedLicense: CC BYBern Open Repository and Information System (BORIS)Article . 2023 . Peer-reviewedData sources: Bern Open Repository and Information System (BORIS)St Andrews Research RepositoryArticle . 2023 . Peer-reviewedData sources: St Andrews Research RepositoryArchivio della Ricerca - Università di Roma Tor vergataArticle . 2023Data sources: Archivio della Ricerca - Università di Roma Tor vergataeScholarship - University of CaliforniaArticle . 2023Data sources: eScholarship - University of CaliforniaSpiral - Imperial College Digital RepositoryArticle . 2022License: CC BYData sources: Spiral - Imperial College Digital RepositoryINRIA a CCSD electronic archive server; Mémoires en Sciences de l'Information et de la Communication; HAL-CEAArticle . 2023License: CC BYFull-Text: https://hal.science/hal-04122511/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.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 57 citations 57 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!visibility 57visibility views 57 download downloads 7 Powered bymore_vert Caltech Authors arrow_drop_down Nature; Archivio della Ricerca - Università di Roma Tor vergataArticle . 2023 . Peer-reviewedLicense: CC BYBern Open Repository and Information System (BORIS)Article . 2023 . Peer-reviewedData sources: Bern Open Repository and Information System (BORIS)St Andrews Research RepositoryArticle . 2023 . Peer-reviewedData sources: St Andrews Research RepositoryArchivio della Ricerca - Università di Roma Tor vergataArticle . 2023Data sources: Archivio della Ricerca - Università di Roma Tor vergataeScholarship - University of CaliforniaArticle . 2023Data sources: eScholarship - University of CaliforniaSpiral - Imperial College Digital RepositoryArticle . 2022License: CC BYData sources: Spiral - Imperial College Digital RepositoryINRIA a CCSD electronic archive server; Mémoires en Sciences de l'Information et de la Communication; HAL-CEAArticle . 2023License: CC BYFull-Text: https://hal.science/hal-04122511/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=10.1038/s41586-022-05591-3&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint 2023 FrancePublisher:Elsevier BV Funded by:UKRI | REFLOW: Renewable Energy ..., UKRI | Smart Seat-Manufacturing ...UKRI| REFLOW: Renewable Energy from Fish Lipid Oil Waste ,UKRI| Smart Seat-Manufacturing (SSM) – Digitally Automated Quality-Driven Finishing ProcessElise Basquin; Apolline El Baz; Jacques Sainte-Marie; Alain Rabaute; Maud Thomas; Sara Lafuerza; Abdelmounim El M'rini; Denis Mercier; Elia d’Acremont; Marie-Odile Bristeau; Axel Creach;International audience; The Alboran Basin may be subject to tsunami hazards. If such an event were to occur, it is expected that the urbanised and densely populated areas of northern Moroccan coastline would be affected. Precise inundation hazard maps are needed for tsunami risk management in this region. In this article, we argue that the diversity of hazard mapping methods ensures the robustness of the scientific knowledge about the exposure of a territory. Hence, the main objective of this study is to analyse the exposure of the plain of Martil (north of Morocco), by using four hazard mapping methods to create inundation maps for two scenarios of tsunamis generated by extreme submarine mass failure (SMF) in the Alboran Sea, of 0.9 km3 and 3.8 km3 respectively. A digital terrain model of the plain was used to explore four methods of inundation mapping. The static method identified 4.32 km2 and 19.83 km2 of flooded areas for each scenario using water height values as inundation thresholds. The hybrid and the volumetric methods use the volume of water to determine the inundation extent. For the first scenario, 3.51 km2 of the plain were inundated using the hybrid method, and 20.11 km2 for the second scenario. The results of the volumetric methods are 2.32 km2 and 7.82 km2 respectively for the first and second scenario. Finally, the fourth method relies on numerical hydrodynamic modelling of tsunami inundation (Freshkiss3d® code). With this method, 4.55 km2 of the plain were flooded in the first scenario, and 24.12 km2 for the second. The comparison of the results highlights that the most sensitive areas to tsunami inundation are the lowest topographic ones, being the beaches and the wadis floodplains. This result raises questions on the current coastal development and the preparedness of its population, thus calling for more attention to engage on tsunami risk management related questions.
Natural Hazards Rese... arrow_drop_down INRIA a CCSD electronic archive server; Mémoires en Sciences de l'Information et de la Communication; HAL-IRDArticle . 2023License: CC BY NC NDFull-Text: https://hal.science/hal-04134599/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.
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For further information contact us at helpdesk@openaire.euAccess Routesgold 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert Natural Hazards Rese... arrow_drop_down INRIA a CCSD electronic archive server; Mémoires en Sciences de l'Information et de la Communication; HAL-IRDArticle . 2023License: CC BY NC NDFull-Text: https://hal.science/hal-04134599/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=10.2139/ssrn.4418728&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Preprint , Article 2023Embargo end date: 01 Jan 2023 FrancePublisher:arXiv Authors: Febvre, Quentin; Sommer, Julien Le; Ubelmann, Clément; Fablet, Ronan;Febvre, Quentin; Sommer, Julien Le; Ubelmann, Clément; Fablet, Ronan;International audience; Satellite altimetry combined with data assimilation and optimal interpolation schemes have deeply renewed our ability to monitor sea surface dynamics. Recently, deep learning (DL) schemes have emerged as appealing solutions to address space-time interpolation problems. The scarcity of real altimetry dataset, in terms of space-time coverage of the sea surface, however impedes the training of state-of-the-art neural schemes on real-world case-studies. Here, we leverage both simulations of ocean dynamics and satellite altimeters to train simulation-based neural mapping schemes for the sea surface height and demonstrate their performance for real altimetry datasets. We analyze further how the ocean simulation dataset used during the training phase impacts this performance. This experimental analysis covers both the resolution from eddy-present configurations to eddy-rich ones, forced simulations vs. reanalyses using data assimilation and tide-free vs. tide-resolving simulations. Our benchmarking framework focuses on a Gulf Stream region for a realistic 5-altimeter constellation using NEMO ocean simulations and 4DVarNet mapping schemes. All simulation-based 4DVarNets outperform the operational observation-driven and reanalysis products, namely DUACS and GLORYS. The more realistic the ocean simulation dataset used during the training phase, the better the mapping. The best 4DVarNet mapping was trained from an eddy-rich and tide-free simulation datasets. It improves the resolved longitudinal scale from 151 kilometers for DUACS and 241 kilometers for GLORYS to 98 kilometers and reduces the root mean squared error (RMSE) by 23% and 61%. These results open research avenues for new synergies between ocean modelling and ocean observation using learning-based approaches.
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=10.48550/arxiv.2309.14350&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 0 citations 0 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=10.48550/arxiv.2309.14350&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Preprint , Article , Other literature type 2022 FrancePublisher:Copernicus GmbH Authors: Maxime Beauchamp; Quentin Febvre; Hugo Georgenthum; Ronan Fablet;Maxime Beauchamp; Quentin Febvre; Hugo Georgenthum; Ronan Fablet;Abstract. The reconstruction of sea surface currents from satellite altimeter data is a key challenge in spatial oceanography, especially with the upcoming wide-swath SWOT (Surface Water and Ocean and Topography) altimeter mission. Operational systems, however, generally fail to retrieve mesoscale dynamics for horizontal scales below 100 km and timescales below 10 d. Here, we address this challenge through the 4DVarnet framework, an end-to-end neural scheme backed on a variational data assimilation formulation. We introduce a parameterization of the 4DVarNet scheme dedicated to the space–time interpolation of satellite altimeter data. Within an observing system simulation experiment (NATL60), we demonstrate the relevance of the proposed approach, both for nadir and nadir plus SWOT altimeter configurations for two contrasting case study regions in terms of upper ocean dynamics. We report a relative improvement with respect to the operational optimal interpolation between 30 % and 60 % in terms of the reconstruction error. Interestingly, for the nadir plus SWOT altimeter configuration, we reach resolved space–timescales below 70 km and 7 d. The code is open source to enable reproducibility and future collaborative developments. Beyond its applicability to large-scale domains, we also address the uncertainty quantification issues and generalization properties of the proposed learning setting. We discuss further future research avenues and extensions to other ocean data assimilation and space oceanography challenges.
arXiv.org e-Print Ar... arrow_drop_down Geoscientific Model Development (GMD)Other literature type . 2022Data sources: Copernicus PublicationsGeoscientific Model Development (GMD)Other literature type . 2023Data sources: Copernicus Publicationshttps://doi.org/10.5194/gmd-20...Preprint . 2022 . Peer-reviewedLicense: CC BYData sources: CrossrefHAL-Rennes 1; INRIA a CCSD electronic archive server; Mémoires en Sciences de l'Information et de la CommunicationArticle . 2023License: CC BYFull-Text: https://hal.science/hal-04140934/documentMémoires en Sciences de l'Information et de la CommunicationPreprint . 2023add 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/gmd-2022-241&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 3 citations 3 popularity Top 10% influence Average impulse Average Powered by BIP!more_vert arXiv.org e-Print Ar... arrow_drop_down Geoscientific Model Development (GMD)Other literature type . 2022Data sources: Copernicus PublicationsGeoscientific Model Development (GMD)Other literature type . 2023Data sources: Copernicus Publicationshttps://doi.org/10.5194/gmd-20...Preprint . 2022 . Peer-reviewedLicense: CC BYData sources: CrossrefHAL-Rennes 1; INRIA a CCSD electronic archive server; Mémoires en Sciences de l'Information et de la CommunicationArticle . 2023License: CC BYFull-Text: https://hal.science/hal-04140934/documentMémoires en Sciences de l'Information et de la CommunicationPreprint . 2023add 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/gmd-2022-241&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint 2021 FrancePublisher:Copernicus GmbH Funded by:NSERCNSERCAuthors: Nicholas K.-R. Kevlahan; Florian Lemarié;Nicholas K.-R. Kevlahan; Florian Lemarié;This paper introduces wavetrisk-2.1 (i.e. wavetrisk-ocean), an incompressible version of the atmosphere model wavetrisk-1.x with free surface. This new model is built on the same wavelet-based dynamically adaptive core as wavetrisk, which itself uses dynamico's mimetic vector-invariant multilayer rotating shallow water formulation. Both codes use a Lagrangian vertical coordinate with conservative remapping. The ocean variant solves the incompressible multilayer shallow water equations with inhomogeneous density layers. Time integration uses barotropic–baroclinic mode splitting via an semi-implicit free surface formulation, which is about 34–44 times faster than an unsplit explicit time-stepping. The barotropic and baroclinic estimates of the free surface are reconciled at each time step using layer dilation. No slip boundary conditions at coastlines are approximated using volume penalization. The vertical eddy viscosity and diffusivity coefficients are computed from a closure model based on turbulent kinetic energy (TKE). Results are presented for a standard set of ocean model test cases adapted to the sphere (seamount, upwelling and baroclinic turbulence). An innovative feature of wavetrisk-ocean is that it could be coupled easily to the wavetrisk atmosphere model, thus providing a first building block toward an integrated Earth system model using a consistent modelling framework with dynamic mesh adaptivity and mimetic properties.
Geoscientific Model ... arrow_drop_down https://doi.org/10.5194/gmd-20...Preprint . 2021 . Peer-reviewedLicense: CC BYData 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=10.5194/gmd-2021-365&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 2 citations 2 popularity Average influence Average impulse Average Powered by BIP!more_vert Geoscientific Model ... arrow_drop_down https://doi.org/10.5194/gmd-20...Preprint . 2021 . Peer-reviewedLicense: CC BYData 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=10.5194/gmd-2021-365&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint 2021 FrancePublisher:Springer Science and Business Media LLC Authors: Franck Bourrier; Vincent Acary;Franck Bourrier; Vincent Acary;Block propagation models have been used for years for rockfall hazard assessment. However, the calibration of model parameters that allow the simulations to accurately predict rockfall trajectories for a given study site remains a key issue. This research aims at investigating the predictive capabilities of block propagation models after a preliminary calibration phase. It is focused on models integrating the shape of blocks since, despite their sound physical bases, they remain less used than lumped-mass approaches due to their more recent popularisation. Benefiting from both a recently built model integrating block shape, usable in 2D and 3D, and from recent experimental results at the slope scale, we first performed a calibration based on the use of the 2D model, and then we evaluated the predictive capabilities of the calibrated model in 2D and in 3D using the remaining part of the experimental results. The calibrated model simulations predict the main characteristics of the propagation, that is the preferential deposit zones and the ranges of velocities at specific locations. Good matches between simulations and experimental results in both the calibration and validation phases emphasizes the wide applicability of the model: after a calibration phase on a sufficient number of different soil types, the model may be used in a predictive manner. The good match between 2D and 3D simulations also highlights the ease-of-use of the model for field applications, as the 2D model produces sufficiently accurate results while also being easier and faster to calibrate. As classically observed for block propagation models, the model is not sufficient to predict the details of the velocity and stopping points but provides accurate predictions of the global ranges of these quantities, in particular of the extreme values. To lift these limitations in terms of predictive capabilities, more advanced calibration procedures based on optimization techniques constitute a promising path forward.
Rock Mechanics and R... arrow_drop_down Rock Mechanics and Rock EngineeringArticle . 2021 . Peer-reviewedLicense: Springer TDMData 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=10.1007/s00603-021-02696-5&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesbronze 4 citations 4 popularity Top 10% influence Average impulse Average Powered by BIP!more_vert Rock Mechanics and R... arrow_drop_down Rock Mechanics and Rock EngineeringArticle . 2021 . Peer-reviewedLicense: Springer TDMData 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=10.1007/s00603-021-02696-5&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Preprint 2021 FrancePublisher:Springer Science and Business Media LLC Authors: d’Albis, Hippolyte; Coulibaly, Dramane; Roumagnac, Alix; de Carvalho Filho, Eurico; +1 Authorsd’Albis, Hippolyte; Coulibaly, Dramane; Roumagnac, Alix; de Carvalho Filho, Eurico; Bertrand, Raphaël;An estimation of the impact of climatic conditions—measured with an index that combines temperature and humidity, the IPTCC—on the hospitalizations and deaths attributed to SARS-CoV-2 is proposed. The present paper uses weekly data from 54 French administrative regions between March 23, 2020 and January 10, 2021. Firstly, a Granger causal analysis is developed and reveals that past values of the IPTCC contain information that allow for a better prediction of hospitalizations or deaths than that obtained without the IPTCC. Finally, a vector autoregressive model is estimated to evaluate the dynamic response of hospitalizations and deaths after an increase in the IPTCC. It is estimated that a 10-point increase in the IPTCC causes hospitalizations to rise by 2.9% (90% CI 0.7–5.0) one week after the increase, and by 4.1% (90% CI 2.1–6.4) and 4.4% (90% CI 2.5–6.3) in the two following weeks. Over ten weeks, the cumulative effect is estimated to reach 20.1%. Two weeks after the increase in the IPTCC, deaths are estimated to rise by 3.7% (90% CI 1.6–5.8). The cumulative effect from the second to the tenth weeks reaches 15.8%. The results are robust to the inclusion of air pollution indicators. International audience
HAL-ENS-LYON; Mémoir... arrow_drop_down Europe PubMed CentralArticle . 2021Full-Text: http://europepmc.org/articles/PMC8575948Data sources: PubMed Centraladd 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/s41598-021-01392-2&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 6 citations 6 popularity Top 10% influence Average impulse Top 10% Powered by BIP!more_vert HAL-ENS-LYON; Mémoir... arrow_drop_down Europe PubMed CentralArticle . 2021Full-Text: http://europepmc.org/articles/PMC8575948Data sources: PubMed Centraladd 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/s41598-021-01392-2&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Preprint 2021 Lithuania, Lithuania, Sweden, France, France, Italy, Netherlands, GermanyPublisher:Copernicus GmbH Githumbi, Esther; Fyfe, Ralph; Gaillard, Marie-Jose; Trondman, Anna-Kari; Mazier, Florence; Nielsen, Anne-Birgitte; Poska, Anneli; Sugita, Shinya; Woodbridge, Jessie; Azuara, Julien; Feurdean, Angelica; Grindean, Roxana; Lebreton, Vincent; Marquer, Laurent; Nebout-Combourieu, Nathalie; Stančikaitė, Miglė; Tanţău, Ioan; Tonkov, Spassimir; Shumilovskikh, Lyudmila; Åkesson, Christine; Balakauskas, Lauras; Batalova, Vlada; Birks, H. John B.; Bjune, Anne E.; Borisova, Olga; Bozilova, Elissaveta; Burjachs, Francesc; Cheddadi, Rachid; Christiansen, Jörg; David, Remi; de Klerk, Pim; Di Rita, Federico; Dörfler, Walter; Doyen, Elise; Eastwood, Warren; Etienne, David; Feeser, Ingo; Filipova-Marinova, Mariana; Fischer, Elske; Galop, Didier; Carrion, Jose Garcia Sebastian; Gauthier, Emilie; Giesecke, Thomas; Herking, Christa; Herzschuh, Ulrike; Jouffroy-Bapicot, Isabelle; Kasianova, Alisa; Kouli, Katerina; Kuneš, Petr; Lagerås, Per; Latałowa, Małgoržata; Lechterbeck, Jutta; Leroyer, Chantal; Leydet, Michelle; Lisytstina, Olga; Lukanina, Ekaterina; Magyari, Enikő; Marguerie, Dominique; Mariotti Lippi, Marta; Mensing, Scott; Mercuri, Anna Maria; Miebach, Andrea; Milburn, Paula; Miras, Yannick; del Molino, César Morales; Mrotzek, Almut; Nosova, Maria; Odgaard, Bent Vad; Overballe-Petersen, Mette; Panajiotidis, Sampson; Pavlov, Danail; Persson, Thomas; Pinke, Zsolt; Ruffaldi, Pascale; Sapelko, Tatyana; Schmidt, Monika; Schult, Manuela; Stivrins, Normunds; Tarasov, Pavel E.; Theuerkauf, Martin; Veski, Siim; Wick, Lucia; Wiethold, Julian; Woldring, Henk; Zernitskaya, Valentina;Quantitative reconstructions of past land cover are necessary to determine the processes involved in climate–human–land-cover interactions. We present the first temporally continuous and most spatially extensive pollen-based land-cover reconstruction for Europe over the Holocene (last 11 700 cal yr BP). We describe how vegetation cover has been quantified from pollen records at a 1∘ × 1∘ spatial scale using the “Regional Estimates of VEgetation Abundance from Large Sites” (REVEALS) model. REVEALS calculates estimates of past regional vegetation cover in proportions or percentages. REVEALS has been applied to 1128 pollen records across Europe and part of the eastern Mediterranean–Black Sea–Caspian corridor (30–75∘ N, 25∘ W–50∘ E) to reconstruct the percentage cover of 31 plant taxa assigned to 12 plant functional types (PFTs) and 3 land-cover types (LCTs). A new synthesis of relative pollen productivities (RPPs) for European plant taxa was performed for this reconstruction. It includes multiple RPP values (≥2 values) for 39 taxa and single values for 15 taxa (total of 54 taxa). To illustrate this, we present distribution maps for five taxa (Calluna vulgaris, Cerealia type (t)., Picea abies, deciduous Quercus t. and evergreen Quercus t.) and three land-cover types (open land, OL; evergreen trees, ETs; and summer-green trees, STs) for eight selected time windows. The reliability of the REVEALS reconstructions and issues related to the interpretation of the results in terms of landscape openness and human-induced vegetation change are discussed. This is followed by a review of the current use of this reconstruction and its future potential utility and development. REVEALS data quality are primarily determined by pollen count data (pollen count and sample, pollen identification, and chronology) and site type and number (lake or bog, large or small, one site vs. multiple sites) used for REVEALS analysis (for each grid cell). A large number of sites with high-quality pollen count data will produce more reliable land-cover estimates with lower standard errors compared to a low number of sites with lower-quality pollen count data. The REVEALS data presented here can be downloaded from https://doi.org/10.1594/PANGAEA.937075 (Fyfe et al., 2022).
Earth System Science... arrow_drop_down Earth System Science Data (ESSD); Institutional Repository of Nature Research Centre; Earth System Science Data; PURE Aarhus University; IRIS UNIMORE - Archivio istituzionale della ricerca - Università di Modena e Reggio EmiliaOther literature type . Article . 2022 . Peer-reviewedLicense: CC BYhttps://doi.org/10.5194/essd-2...Preprint . 2021 . Peer-reviewedLicense: CC BYData sources: CrossrefVilnius University Institutional RepositoryArticle . 2022Data sources: Vilnius University Institutional RepositoryDigitala Vetenskapliga Arkivet - Academic Archive On-lineArticle . 2022 . Peer-reviewedHAL-Rennes 1; Mémoires en Sciences de l'Information et de la CommunicationArticle . 2022License: CC BYFull-Text: https://hal.science/hal-03418785/documentGöttingen Research Online PublicationsArticle . 2022Data sources: Göttingen Research Online Publicationsadd 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/essd-2021-269&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routeshybrid 38 citations 38 popularity Top 1% influence Average impulse Top 1% Powered by BIP!visibility 103visibility views 103 download downloads 105 Powered bymore_vert Earth System Science... arrow_drop_down Earth System Science Data (ESSD); Institutional Repository of Nature Research Centre; Earth System Science Data; PURE Aarhus University; IRIS UNIMORE - Archivio istituzionale della ricerca - Università di Modena e Reggio EmiliaOther literature type . Article . 2022 . Peer-reviewedLicense: CC BYhttps://doi.org/10.5194/essd-2...Preprint . 2021 . Peer-reviewedLicense: CC BYData sources: CrossrefVilnius University Institutional RepositoryArticle . 2022Data sources: Vilnius University Institutional RepositoryDigitala Vetenskapliga Arkivet - Academic Archive On-lineArticle . 2022 . Peer-reviewedHAL-Rennes 1; Mémoires en Sciences de l'Information et de la CommunicationArticle . 2022License: CC BYFull-Text: https://hal.science/hal-03418785/documentGöttingen Research Online PublicationsArticle . 2022Data sources: Göttingen Research Online Publicationsadd 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/essd-2021-269&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Preprint , Article 2021 FrancePublisher:University of South Florida Libraries Freydier, Perrine; Weber, Éric; Martin, Jérôme; Jeannin, Pierre-Yves; Guerrier, Béatrice; Doumenc, Frédéric;International audience; Vermiculations are aggregates of small particles commonly found on cave walls. They are a major concern for the conservation of painted caves, as they can potentially alter valuable prehistoric cave paintings. A previous rheological study of fine sediment deposits on cave walls revealed that this material can undergo a solid-to-liquid transition triggered by variations in the chemical composition of the water film on the wall. Such a transition could occur at the origin of vermiculations by allowing the sediment to flow under low mechanical stress. In this work, we provide quantitative information on the conditions leading to this transition and show the importance of the chemical composition of the water film on the cave walls. A complete understanding of the phenomenon will, however, require more field information. This includes monitoring of the evolution of vermiculations, for which we have developed a dedicated observation protocol. Based on the combination of photogrammetry and a geographic information system we were able to precisely map the walls of the Hall of Bulls in Lascaux cave from past and future photographs. To better understand the vermiculation process, pictures need to be taken regularly, and the chemical composition of the thin water film covering cave walls needs to be analyzed with a similar time step. The correlation between the evolution of vermiculations, the humidification phases of the walls, temperature changes and the chemical monitoring of the water film should shed new light on conditions triggering vermiculations
International Journa... arrow_drop_down 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=10.5038/1827-806x.50.3.2390&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 1 citations 1 popularity Average influence Average impulse Average Powered by BIP!more_vert International Journa... arrow_drop_down 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=10.5038/1827-806x.50.3.2390&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu