Modeling seismic wave propagation in TTI media using multiaxial complex frequency shifted nearly perfectly matched layer method

Luo, Yuqin; Liu, Cai

doi:10.1007/s11600-021-00696-1

Artykuł - szczegóły

Tytuł artykułu

Modeling seismic wave propagation in TTI media using multiaxial complex frequency shifted nearly perfectly matched layer method

Autorzy

Luo Yuqin , Liu Cai

Wybrane pełne teksty z tego czasopisma

https://www.springer.com/journal/11600

Identyfikatory

DOI

10.1007/s11600-021-00696-1

Warianty tytułu

Języki publikacji

Abstrakty

The nearly perfectly matched layer (NPML) is a non-split perfectly matched layer that directly transforms the wave field. Compared to other non-split perfectly matched layers, NPML is computationally efficient and has advantages such as not changing the form of the equation and being easy to implement. However, in TTI medium simulations it is found that the NPML is very unstable and cannot absorb near-grazing incident waves. This explains why the CPML is currently used more frequently. In this study, the complex frequency shifted transform is used to enhance the absorption of near-grazing incident waves with NPML and to avoid the generation of low-frequency singular values. At the same time, the double damping profile is used to improve the stability of the boundary we called MCFS-NPML. Subsequently, this method is also applied to seismic wave equations in poroelastic media. In order to further improve the absorption capacity of the boundary and weaken the deviation caused by the discrete difference, a new attenuation function is proposed.

Słowa kluczowe

double attenuation profiles seismic wave propagation nearly perfectly matched layer complex frequency shifted transform

podwójne profile tłumienia propagacja fali sejsmicznej

Wydawca

Instytut Geofizyki PAN
Springer

Czasopismo

Acta Geophysica

Rocznik

2022

Tom

Vol. 70, no 1

Strony

89--109

Opis fizyczny

Bibliogr. 45 poz.

Twórcy

autor

Luo Yuqin

luoyq1994@163.com

College of Geo-Exploration Science and Technology, Jilin University, 938 S, West Minzhu Ave, Changchun 130021, Jilin, China

https://orcid.org/0000-0001-9732-0681

autor

Liu Cai

liucai@jlu.edu.cn

College of Geo-Exploration Science and Technology, Jilin University, 938 S, West Minzhu Ave, Changchun 130021, Jilin, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-05e6cbb9-2bb7-4b52-b351-0f0d2820b635