Fine-scale velocity distribution revealed by datuming of very-high-resolution deep-towed seismic data: Example of a shallow-gas system from the western Black Sea
- Colin, Florent
- Ker, Stephan
- Marsset, Bruno
DOIAbstract
Very High-Resolution (VHR) marine seismic reflection helps to identify and characterize potential geohazards occurring in the upper part (300 m) of the sub-seafloor. Whereas the lateral and vertical resolutions achieved in shallow water depth (<200 m) using conventional surface-towed technology are adequate, these resolutions quickly deteriorate at greater water depths. SYSIF (SYstème SIsmique Fond), a multichannel deep-towed seismic system, has been designed to acquire VHR data (frequency bandwidth [220-1050 Hz] and vertical resolution of 0.6 m) at great water depths. However, the processing of deep-towed multichannel data is challenging as both the source and receivers are constantly moving with respect to each other according to the towi...
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