Two dense seismic campaigns in the French Rhône valley for characterizing site effects
Résumé
We present here datasets acquired in the French Rhône valley in the heavily industrialized area surrounding the Tricastin Nuclear Site (TNS). TNS is located above an ancient Rhône canyon now filled with sediments. In order to characterize the geological medium and its impact on the seismic motion, we conducted two complementary seismic campaigns in the area. The first campaign consisted of deploying 400 nodes over a 10x10 km area for one month and aimed at recording the seismic ambient noise. A second campaign consisted of deploying about 50 broadband stations over the same area for nine months and aimed at recording the seismicity. Both dense datasets will be processed within the French-German DARE project to explore the potential of such acquisitions to improve site effect characterization in low-to-moderate seismicity areas. In this poster, we provide details on the measurement campaigns, the related challenges and perspectives, and further present the acquired datasets in the framework of site effect assessment in an urban and industrialized area.
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