Seismo-acoustic wave propagation in the Rade of Hyères (France) generated by counter-mining of explosive devices: comparison between numerical simulations and real experiments

摘要

A series of underwater explosions detonations was conducted in December 2018 in the Rade of Hyeres in France. From topographical and sedimentary measurements performed in this area, physical and geometrical characteristics of the marine seabed have been carefully selected to serve as input data for numerical simulations of seismo-acoustic wave propagation, from the source to several seismometers deployed on the coast of Hyeres and surrounding islands. The numerical simulation is conducted using a spectral-element method. The source time function is estimated from in situ acoustic signals recorded by hydrophones located around the detonation location. The seismic data recorded on the coast are used to calibrate the numerical simulation and to evaluate the impact of different marine environments.