Seismic signal enhancement of antarctic crustal data

Most of the seismic data acquired in the Ross Sea (Antarctica) are affected by a severe reverberation. Problem. The strongest reverberation energy comes from sea-bottom related multiple reflections. A simple CMP (Common Mid Point) stack-based processing is not sufficient to overcome this problem. particularly true if the objective is deep reflectors. Therefore a reprocessing of same of the seismic line using specific, and in one case innovative, procedures. The weighted stack approach was not effective. at least in the case of lime 1T89A25. Application of the f-k domain multiple suppression method gave evidence of a deep reflection previously masked. The best result, however, came from the application of a newly implemented multiple suppression algorithm; reflections, in general, and in particular those associated with the acoustic basement and the Moho discontinuity were considerably improved.