NUMERICAL MODELING FOR 3D ACOUSTIC WAVE EQUATION IN THE FREQUENCY DOMAIN SCIE SCOPUS

Cited 2 time in WEB OF SCIENCE Cited 2 time in Scopus
Title
NUMERICAL MODELING FOR 3D ACOUSTIC WAVE EQUATION IN THE FREQUENCY DOMAIN
Author(s)
Ha, Taeyoung; Choi, Yunseok; Shin, Changsoo; Min, Dong-Joo
Publication Year
2009-01
Abstract
We investigate a frequency-domain finite-element method for three-dimensional modeling of the acoustic wave equation. Frequency-domain modeling has several advantages over time-domain modeling, even though it requires huge computational memory compared to time-domain modeling. One of these advantages is that multi-shot modeling can be performed more efficiently in the frequency domain than in the time domain, and another is the ability to work on a frequency-by-frequency basis, which makes it possible to distribute frequencies across processors. Considering that frequency-domain modeling is popular in waveform inversion because of source wavelet estimation and multi-shot modeling, 3D frequency-domain finite-element modeling can be effectively used in 3D waveform inversion. We derive a numerical dispersion relationship for the 3D frequency-domain finite-element method and then analyze numerical dispersion on the basis of dispersion curves. From the dispersion analysis, we determine the minimum number of grid points per wavelength. The validity of the 3D finite-element modeling algorithm is examined for a three-layered model and the SEG/EAGE salt model.
ISSN
0963-0651
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4347
Bibliographic Citation
JOURNAL OF SEISMIC EXPLORATION, v.18, no.1, pp.57 - 79, 2009
Publisher
GEOPHYSICAL PRESS
Subject
FINITE-DIFFERENCE; FORM INVERSION; FIELD
Keywords
3D modeling; acoustic wave equation; frequency-domain; finite-element; numerical dispersion
Type
Article
Language
English
Document Type
Article
Publisher
GEOPHYSICAL PRESS
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