Geometric-mean reverse-time migration for elastic media
Name
segam2021-3594126.1.pdf
Description
Published version
Size
2.61 MB
Format
Adobe PDF
Checksum (MD5)
11a81e13ed3aa13d2679879b7b8871fd
Author(s)
Bai, Tong
Lyu, Bin
Gao, Fuchun
Williamson, Paul
Nakata, Nori
Date Issued
September 1, 2021
Journal
First International Meeting for Applied Geoscience & Energy
Publisher
Society of Exploration Geophysicists
Citation
Tong Bai, Bin Lyu, Fuchun Gao, Paul Williamson, Nori Nakata; September 1, 2021. "Geometric-mean reverse-time migration for elastic media." Proceedings of the First International Meeting for Applied Geoscience & Energy. First International Meeting for Applied Geoscience & Energy. (pp. pp. 2051-2055). ASME.
Version
Final published version
Abstract
It has been shown that Geometric-mean Reverse-Time Migration (GmRTM) can produce source images with improved resolution than conventional time-reversal imaging in acoustic media. Here, we extend this cross-correlation-based imaging method to elastic media. Back-propagation and Helmholtz decomposition are conducted individually for each receiver wavefield, after which we apply zero-lag cross-correlations over the decoupled P- or/and S- wavefields to obtain the corresponding P-, S- and PS-source images, respectively. We validate the proposed method and demonstrate its advantages using a synthetic example with the elastic Marmousi model and an Oklahoma field data example.
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1190/segam2021-3594126.1
