A Method to Compensate Earth Filtering based on Wavelet Packet

The earth's filtering response to seismic wave propagation can be approximated by variable Q attenuation and is dispersive or minimum phase. A model to compensate earth filtering is developed based on the wavelet packet decomposition. According to the model, a new method to compensate earth fil...

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Bibliographic Details
Published in:Chinese journal of geophysics 2000-07, Vol.43 (4), p.576-583
Main Authors: LI, KunPeng, LI, YanDa, ZHANG, XueGong
Format: Article
Language:English
Subjects:
Compensate
Earth filtering
Seismic wavelet
Wavelet packet
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Summary:The earth's filtering response to seismic wave propagation can be approximated by variable Q attenuation and is dispersive or minimum phase. A model to compensate earth filtering is developed based on the wavelet packet decomposition. According to the model, a new method to compensate earth filtering is presented. The step of the method is: firstly, decompose seismic wave into difference frequency band; then, according to the model of compensating earth filtering to find attenuation coefficients of every frequency component; thirdly, every wavelet packet decomposition coefficients are divided by attenuation coefficients, and finally reconstruct seismic wave from modified frequency component to compensate earth filtering.
ISSN:0898-9591
2326-0440
DOI:10.1002/cjg2.71