Geophysics 1

The aim of this module is to present the two geophysical prospecting methods currently most widely used to explore and analyze the subsoil: geoelectrical and seismic methods. The main difference between these methods is the physical parameter measured (electrical resistivity, seismic wave propagation speed).
These two methods are mainly used for environmental and geotechnical issues: natural hazards, detection of underground cavities, polluted water tables, etc...
In this 1st applied geophysics module, we will focus on methods applicable to 1D geometries: electrical resistivity sounding and seismic refraction sounding.

Definition of geophysical parameters


Electrical resistivity (CM: 2h)


Seismic wave propagation velocity (CM: 2h)


Application TD (TD: 2h * 2 groups)


Principle of geophysical methods


Electrical resistivity sounding (CM : 10h)


Seismic refraction sounding (CM: 10h)


Application to a gravel pit survey


Electrical resistivity sounding (T: 1.5h * 8 groups - TDM: 6h * 2 groups)


Seismic refraction sounding (T: 1.5h * 8 groups - TDM: 6h * 2 groups)


Synthesis (TD: 1h)