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2D frequency-domain finite-difference acoustic wave modeling using optimized perfectly matched layers

Lei Wen, Liu Yutao, Li Gang, Zhu Shuang, Chen Guoxin and Li Chunfeng
2D frequency-domain finite-difference acoustic wave modeling using optimized perfectly matched layers
Geophysics (April 2023) 88 (2): F1-F13

Abstract

Seismic forward modeling is fundamental in sensitivity analysis and full-waveform inversions. In finite-difference acoustic wavefield simulation, the absorption boundary, especially the perfectly matched layer (PML), is widely used, but the setting of PML parameters is empirical. An optimized complex frequency-shift PML (CFS-PML) for the modeling of acoustic fields has been developed. It refines the selection of parameters for improving the artificial attenuation. The improved CFS-PML boundary condition is applied to a 2D frequency-domain acoustic wave simulation using an optimal 17-point finite-difference scheme. Numerical results are compared with a conventional nine-point scheme in terms of computational time and physical memory consumption. These tests indicate that our CFS-PML absorption boundary can effectively improve numerical accuracy without increasing the computational burden remarkably.


ISSN: 0016-8033
EISSN: 1942-2156
Coden: GPYSA7
Serial Title: Geophysics
Serial Volume: 88
Serial Issue: 2
Title: 2D frequency-domain finite-difference acoustic wave modeling using optimized perfectly matched layers
Affiliation: Zhejiang University, Department of Marine Sciences, Zhoushan, China
Pages: F1-F13
Published: 202304
Text Language: English
Publisher: Society of Exploration Geophysicists, Tulsa, OK, United States
References: 42
Accession Number: 2023-030192
Categories: Applied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 3 tables
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2023, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by Society of Exploration Geophysicists, Tulsa, OK, United States
Update Code: 2023
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