Lateral Discontinuity Localization and Characetrization by Means of Enhanced Statistical Phase Analysis of Surface Waves

Most standard procedures for dispersion analysis make use of multichannel wavefield transforms and the lateral velocity variations can be averaged spatially. On the other hand, the use of a local phase offset analysis can provide a very high lateral resolution. A new statistical enhanced multioffset phase analysis of surface wave data is presented. The phase processing of point receiver land data allows identification of velocity variations with a lateral resolution equal to the receiver spacing. An automatic procedure is set up to identify sharp lateral variation, and is tested on real land point receiver data.