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Traveltime and amplitude calculation using a perturbation approach

Cited 1 time in Web of Science Cited 1 time in Scopus
Authors
Shin, Changsoo; Marfurt, Kurt J.; Park, Kwon Gyu; Min, Dong-Joo; Yoon, Kwangjin; Yang, Dongwoo; Ha, Taeyoung; Ko, Seungwon; Kim, Wonsik; Hong, Soonduk
Issue Date
2002
Publisher
Society of Exploration Geophysicists (SEG)
Citation
Geophysics, 67, 1648-1655
Abstract
Accurate amplitudes and correct traveltimes are critical
factors that govern the quality of prestack migration
images. Because we never know the correct velocity
initially, recomputing traveltimes and amplitudes
of updated velocity models can dominate the iterative
prestack migration procedure. Most tomographic velocity
updating techniques require the calculation of the
change of traveltime due to local changes in velocity.
For such locally updated velocity models, perturbation
techniques can be a significantly more economic way of
calculating traveltimes and amplitudes than recalculating
the entire solutions from scratch.
In this paper, we implement an iterative Born perturbation
theory applied to the damped wave equation
algorithm. Our iterative Born perturbation algorithm
yields stable solutions for models having velocity contrasts
of 30% about the initial velocity estimate, which is
significantly more economic than recalculating the entire
solution.
ISSN
0016-8033
Language
English
URI
http://hdl.handle.net/10371/6123
DOI
https://doi.org/10.1190/1.1512812
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Energy Systems Engineering (에너지시스템공학부)Journal Papers (저널논문_에너지시스템공학부)
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