Sissterra: A 3D Passive Imaging Solution For Subsoil Exploration In Urban Context

Synopsis:

SISSTERRA® is a 3D passive tomography solution for imaging the subsoil at high resolution. The measurements require the deployment of a network of autonomous, non-intrusive and easy to deploy, seismic nodes on the surface of the study area. The network does not have to be regular and can be adapted to the area of study. Its design can be defined relatively to the depth of investigation (depends on the dimensions of the network) and the lateral resolution needed (equal to the spacing between nodes) and can allow to investigate deep and shallow depths without requiring any active source such as explosives or truck-mounted vibrators.

The Rayleigh waves hidden in the noise signal are extracted by the computation of a cross-correlation between each pair of receivers. This procedure multiplies the number of measurements since we consider pairs of receivers and not individual ones. Dispersion curves obtained from the cross-correlations are…