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New imaging condition of elastic reverse-time migration for converted waves

Title
New imaging condition of elastic reverse-time migration for converted waves
Author
변중무
Keywords
imaging; elastic; converted wave; separation; reverse-time
Issue Date
2015-10
Publisher
Society of Exploratioon of geophysicists
Citation
SEG Technical Program Expanded Abstracts Volume 34, 2015, Page. 2118-2123
Abstract
In this study, we address the polarity reversals in P-S and S-P images and non-physical events generated in S-P and S-S images from ERTM with the conventional zero-lag crosscorrelation. To overcome these problems, we suggest a novel converted wave imaging condition motivated by the specific feature of ERTM that can generate converted waves at the image points when proper elastic models are used. Comparisons with the zero-lag crosscorrelation imaging condition demonstrate that ERTM with our proposed imaging condition can compensate polarity reversals as well as suppress spurious events and even provides the improvement of imaging resolution. © 2015 SEG.
URI
http://library.seg.org/doi/10.1190/segam2015-5860487.1http://hdl.handle.net/20.500.11754/28138
ISSN
10523812; 1949-4645
DOI
10.1190/segam2015-5860487.1
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING(자원환경공학과) > Articles
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