12 Seismic Imaging Béatrice Yven Béatrice Yven studied at the University of Paris Diderot where she received her PhD in Geophysics in 2001. Her research work focused on the characterization of the petrological and petrophysical properties of 3,000 m of volcanic deposits in a high-energy geothermal field. She performed a wide variety of laboratory experiments on core samples and analysed them with well logging data to extrapolate acoustic and thermal properties at the site scale. Béatrice joined the French National Agency for Radioactive Waste Management (Andra) in 2002 where she is in charge of the 3D modelling for thermal, hydraulic and mechanical properties of the site expected to host the radioactive waste disposal. She has participated in several major R&D programmes and reference documents. From 2014, Béatrice Yven has been working on the monitoring of geological disposal facilities. Since 2017 she has been responsible for the monitoring team and has supervised the R&D programme to ensure that reliable, durable, metrological qualified and tested monitoring systems will be available at the time of repository construction to respond to monitoring objectives. Email: beayven@gmail.com; beatrice.yven@andra.fr Michel Hayet Graduating from the École Nationale Supérieure de Géologie Appliquée de Nancy in 1984, Michel Hayet was employed by CGG as a seismologist, party chief, area manager and area geophysicist, mainly in land and shallow water seismic acquisition. In 2009, he joined the Agence nationale pour la gestion des déchets radioactifs (Andra), responsible for high-resolution 3D seismic surveying. Michel is the current chairman of AGAP, Association for Quality in Applied Geophysics (Association pour la Qualité en Géophysique Appliquée). Email: michelhayet@hotmail.fr
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