Ocean-bottom cable dual-sensor scaling
Conference
·
OSTI ID:80306
- Western Geophysical, Houston, TX (United States)
Seismic data recorded at the ocean bottom using either pressure or velocity sensors suffer from the presence of the receiver water-surface ghost. The two sensor types are complementary, however; data recorded by both velocity and pressure phones can be scaled and summed so as to not only cancel the ghost effect, but also all water column reverberations at the receiver end of reflection event raypaths. Traditionally, the scale factors that match a geophone data set to its hydrophone complement are determined by recording and analyzing special calibration shots. If seismic data are not too noisy, calibration scale factors can also be derived directly -- and more economically -- from the data, based on the criterion that the proper scalars are those that best whiten the summed data. Both methods were applied to a line recorded in the Gulf of Mexico. The two stacked sections are visually identical.
- OSTI ID:
- 80306
- Report Number(s):
- CONF-941015--
- Country of Publication:
- United States
- Language:
- English
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