First 3D characterization of the Rhône Messinian Canyon in the Tricastin area from complementary geophysical approaches
| Autor: | Froment, Berenice, Cushing, Edward Marc, Gelis, Celine, Bagayoko, Nanaba, Beaupretre, Sophie, Boue, Pierre, Do Couto, Damien, Magnin, Olivier, Mocochain, Ludovic, Mordret, Aurélien, Rubino, Jean-Loup, Tourette, Alexandre |
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| Přispěvatelé: | Bureau d'évaluation des risques sismiques pour la sûreté des installations (IRSN/PSE-ENV/SCAN/BERSSIN), Service de caractérisation des sites et des aléas naturels (IRSN/PSE-ENV/SCAN), Institut de Radioprotection et de Sûreté Nucléaire (IRSN)-Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Institut de Radioprotection et de Sûreté Nucléaire (IRSN), SISPROBE, Université Grenoble Alpes (UGA), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), Institut des Sciences de la Terre (ISTerre), Institut national des sciences de l'Univers (INSU - CNRS)-Institut de recherche pour le développement [IRD] : UR219-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel-Université Grenoble Alpes (UGA), Institut des Sciences de la Terre de Paris (iSTeP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), EGIS, EGIS SE—Geotechnique, Romanian Association for Earthquake Engineering, UTCB, INFP |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | ECEES 2022-3rd European Conference on Earthquake Engineering and Seismology ECEES 2022-3rd European Conference on Earthquake Engineering and Seismology, Romanian Association for Earthquake Engineering, UTCB, INFP, Sep 2022, Bucarest, Romania |
| Popis: | Superficial geological layers can strongly modify the surface ground motion induced by an earthquake through the so-called “site effects”. One common approach to estimate these local effects at a specific site relies on the numerical simulation of the ground motion. This requires a characterization of the Earth’s subsurface to build a representative model of the seismic wave propagation medium. In this study, we focus on the area of the Tricastin Nuclear Site (TNS). TNS is located over an ancient Rhône canyon whose characteristics and complex geometry make it a good candidate for generating site effects. We present here the first results of 3D medium characterization based on geological investigations and on different types of seismic data, that is, the seismic ambient noise and data from an active seismic exploration survey. The results provided by the different imaging approaches considered are complementary and the first comparison presented in this article highlights the interest of comparing these different results to obtain an overall picture of the subsurface conditions of the site. |
| Databáze: | OpenAIRE |
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