METHOD OF ACQUIRING VIBROSEISMIC DATA CONCERNING A ZONE OF THE SUBSOIL, AND SEISMIC EXPLORATION METHOD INCLUDING SUCH A METHOD

摘要

The invention concerns a method of acquiring vibroseismic data concerning a zone of the subsoil. This method comprises the following steps: - operating a vibroseismic source so that it transmits a first vibroseismic signal having a first amplitude (101, 201), - operating the source so that it transmits a second vibroseismic signal having a second amplitude different from the first amplitude (103, 203), - recording first data corresponding to the first signal after propagation in the medium to be explored (102, 202), - recording second data corresponding to the second signal after propagation in the medium to be explored (104, 204). The method supplies information for filtering the surface waves (ground roll).