Traveltime and amplitude calculation using a perturbation approach SCIE SCOPUS

Cited 1 time in WEB OF SCIENCE Cited 1 time in Scopus
Title
Traveltime and amplitude calculation using a perturbation approach
Author(s)
Shin, CS; Marfurt, KJ; Park, KG; Min, DJ; Yoon, KJ; Yang, DW; Ha, TY; Ko, SW; Kim, WS; Hong, SD
Publication Year
2002-09
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
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/5667
DOI
10.1190/1.1512812
Bibliographic Citation
GEOPHYSICS, v.67, no.5, pp.1648 - 1655, 2002
Publisher
SOC EXPLORATION GEOPHYSICISTS
Subject
FINITE-DIFFERENCE CALCULATION; COMPUTATION; MIGRATION
Type
Article
Language
English
Document Type
Article
Publisher
SOC EXPLORATION GEOPHYSICISTS
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