Logarithmic wavefields 를 이용한 송신원에 무관한 탄성파 완전파형 역산

Title
Logarithmic wavefields 를 이용한 송신원에 무관한 탄성파 완전파형 역산
Alternative Title
Efficient calculation of steepest descent direction of source signature independent waveform inversion of logarithmic wavefield
Author(s)
서태공; 신창수; 민동주; 서상용
Publication Year
2004-10-14
Abstract
In seismic waveform inversion, we need to update source wavelet in addition to velocity model at every iteration step. However, since we generally have incorrect source information in field data, we need to develop a source-independent waveform inversion algorithm. We propose a source-independent waveform inversion algorithm using the logarithm of normalized wavefields. In our source-independent waveform inversion, we use backpropagation algorithm of reverse time migration, thereby implicitly computing the steepest descent by correlating backpropagated residuals with virtual source.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/31734
Bibliographic Citation
SEG International Exposition and 74th Annual Meeting, pp.1 - 4, 2004
Publisher
The Society of Exploration Geophysicists
Type
Conference
Language
English
Publisher
The Society of Exploration Geophysicists
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