Elastic reverse-time migration with OBS multiples
نویسنده
چکیده
Receiver-side water-column multiples acquired with ocean-bottom seismic sensors can be used for elastic imaging of the subsurface, which can provide additional information relative to more conventional acoustic imaging. In this paper, we generalize the procedures for elastic migration using water-column multiples. We first separate receiver-side water-column multiples from primaries in recorded OBS data, and then use mirror imaging to migrate the multiples. However, additional procedures are required in the elastic case, including correcting the polarity change in PS and SP images and attenuating artifacts caused by non-physical wave-mode conversions. With these additional procedures, we are able to obtain PP, PS, SP, and SS images.
منابع مشابه
Elastic imaging with OBS receiver-side multiples
Receiver-side water-column multiples acquired with ocean-bottom seismic sensors can be used for elastic imaging of the subsurface, which can provide additional information relative to more conventional acoustic imaging. These multiples can be separated from primaries contained in ocean-bottom seismic data using techniques such as up/down decomposition. In elastic imaging, the down-going wavefie...
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