A method of generating seismic data by cascading scans for a seismic vibrator.

摘要

The invention relates to geophysical prospecting. BR/ In a method for cascading seismic vibrator scans, a first cascade scan sequence (20) is generated containing N chained scan segments. The N segments differ only by a gradual rotation of about 360 / N degrees from the initial phase angle of each segment. A second sequence (22) is generated comprising (i) N segments corresponding to the first sequence and (ii) an additional segment (24) whose position and phase are chosen so as to significantly attenuate phantom harmonics during the correlation. . One of the sequences is used for the vibrator scan sequence and the other for the correlation reference sequence. BR/ Application to the search for hydrocarbons.