Amplitude spectra estimation
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United States of America Patent
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Jul 17, 2001
Grant Date -
N/A
app pub date -
Sep 15, 1999
filing date -
Sep 15, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and system of amplitude spectra estimation for seismic data using up-going and down-going wavefields includes gathering up-going and down-going wavefields, separating the up-going and the down-going wavefields from each other and crosscorrelating the up-going wavefields and the down-going wavefields. From the result of the crosscorrelation of the up-going wavefields and the down-going wavefields, an estimate of the amplitude spectra in the frequency domain of the seismic data can be obtained. In this method for amplitude spectra estimation, the gathering may include or may be accomplished by providing pressure and particle velocity detectors to distinguish between the up-going and the down-going wavefields. Also, in this method for amplitude spectra estimation, the gathering may include measuring the down-going waves and the separating may include removing the down-going waves from the seismic data. In the alternative, this method for amplitude spectra estimation, the gathering may include measuring the up-going waves and the separating may include removing the up-going waves from the seismic data.
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