Wave propagation modeling in viscoelastic heterogeneous media with CPML : numerical and experimental validation

International audienc

Laser-Doppler acoustic probing of analogue models with in-depth property gradient and varying pore pressures

International audienc

Seismic-Wave Propagation Modeling in Viscoelastic Media Using the Auxiliary Differential Equation Method

International audienc

Laser-Doppler acoustic probing of granular media with in-depth property gradient and varying pore pressures

International audienc

Seismic-Wave Propagation Modeling in Viscoelastic Media Using the Auxiliary Differential Equation Method

International audienc

Laser-Doppler acoustic probing of granular media with in-depth property gradient and varying pore pressures

International audienc

Wave propagation modeling in viscoelastic heterogeneous media with CPML

International audienc

Surface-wave profiling for sinkhole hazard assessment along the eastern Dead Sea shoreline (Ghor Al-Haditha, Jordan)

National audienc

Assessment of doline geometry using geophysics on the Quercy plateau karst (South France)

In the protection of karstic aquifers, the role played by dolines is of interest as these shallow structures can be preferential infiltration pathways for groundwater recharge. In this study, three depressions in South France (Orniac, Lot) were identified and characterized using combined geophysical methods. Apparent conductivity mapping allows precise definition of dolines corresponding to topographic depressions. It also reveals other dolines that are hidden by soil cover. Electrical resistivity and seismic refraction tomography provide detailed cross-sections. Even though the dolines studied are close one to another, they exhibit great variability in shape and content. Moreover, time-lapse data show that the most saturated regions are on the edges of the first doline. Such information helps to evaluate human impacts and forecast potential groundwater contamination