COUTANT , Olivier

The presence of two regional seismic networks in southeastern France provides us high-quality data to investigate upper mantle flow by measuring the splitting of teleseismic shear waves induced by seismic anisotropy. The 10 three-component and broadband stations installed in Corsica, Provence, and western Alps efficiently complete the...

La fibre optique est un concept fascinant qui fait d'un fil de silice de la finesse d'un cheveu un guide de lumière sur de très grandes distances, propageant l'information à la vitesse de la lumière. Cette invention, qui remonte aux années 1960, a révolutionné nos façons de communiquer. Depuis quelques années maintenant, elle est en passe de...

The local measurement of dispersion curves of intermediate-period surface waves is particularly difficult because of the long wavelengths involved. We suggest an improved procedure for measuring dispersion curves using small-aperture broad-band arrays. The method is based on the hypotheses of plane incoming waves and that averaging over a set...

We have developed a network of portable seismic stations dedicated to the high resolution imaging of geological, potentially hazardous, targets. These targets - volcanoes, fault zones, landslide areas - are characterized by strong medium heterogeneities, rugged topography, rough field conditions, and require dedicated equipment in order to...