| 摘要 |
H:'dcrl tntemoen/N RPorthl/DCC/DER/102 70%60 1.doe7/06/2016 A method for operating seismic vibrators, comprising: operating a parametric array comprising at least two seismic vibrators in a body of water beneath a steel-water interface; operating at least a third seismic vibrator in the body of water other than beneath the steel-water interface; and wherein the at least two vibrators in the parametric array sweep through respective first and second frequency ranges, the first and second frequency ranges each having a lowermost frequency and an uppermost frequency, respectively, the frequency of the first and second frequency ranges synchronized to generate a subharmonic sweep, the third seismic vibrator swept through a third frequency range having a lowermost frequency at least equal to the uppermost frequency of either the first and second frequency ranges, the third frequency range having an uppermost frequency within a seismic frequency range of interest. IN/> |
