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Analysis and application of pressure and vertical components of the ocean-bottom cable data(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2005年第01期
Page:
72-75
Research Field:
Publishing date:

Info

Title:
Analysis and application of pressure and vertical components of the ocean-bottom cable data
Author(s):
ZHANG Wen-bo; ZHU Guang-ming
School of Geological Engineering and Surveying Engineering, Chang’ an University, Xi’ an 710054, China
Keywords:
OBC seismic prospecting;  pressure geophone;  velocity geophone;  reverberation
PACS:
P315.3+1
DOI:
-
Abstract:
Hydrophone and vertically oriented geophone induce upward wave signal with identical polarity and downward wave signal with opposite polarity in OBC seismic prospecting, so the water column reverberation can be eliminated by scal- ing and summing pressure and velocity seismic data. This paper analyzes theoretically the characteristic of hydrophone and vertically oriented geophone responding to up and downward wave field and water column reverberation, obtains the scale factors of the pressure and velocity data under ideal circumstance and processes the anolog model signal by using the scale factor. On the basis of analyzing the characteristic of the amplitude, frequency, shape and polarity of the field data, this pa- per also proves the availability of this method by the test of field data.

References:

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Last Update: 1900-01-01