A second order PML Implementation for FDTD Seismic Modelling

Antonios Giannopoulos; S Melling; David Connolly

doi:10.3997/2214-4609.20143325

Abstract

An implementation of a second order unsplit perfectly matched layer (PML) absorbing boundary condition is presented. The formulation is given in the context of seismic modelling and simple models are used to showcase the increased performance. The formulation is presented as a correction procedure to the unchanged governing equations. This approach makes the implementation especially suited for existing FDTD modelling codes. Although, a second order PML might perform better in some cases than the classic or CFS-PML the increased computational requirements and the difficulty in optimising a greater number of PML parameters must be taken into account in deciding the most appropriate PML for a given seismic modelling problem.

Original language	English
DOIs	https://doi.org/10.3997/2214-4609.20143325
Publication status	Published - 3 Sept 2012
Event	18th EAGE European Meeting of Environmental and Engineering Geophysics - Paris, France Duration: 3 Sept 2012 → 5 Sept 2012

Conference

Conference	18th EAGE European Meeting of Environmental and Engineering Geophysics
Country/Territory	France
City	Paris
Period	3/09/12 → 5/09/12

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10.3997/2214-4609.20143325

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title = "A second order PML Implementation for FDTD Seismic Modelling",

abstract = "An implementation of a second order unsplit perfectly matched layer (PML) absorbing boundary condition is presented. The formulation is given in the context of seismic modelling and simple models are used to showcase the increased performance. The formulation is presented as a correction procedure to the unchanged governing equations. This approach makes the implementation especially suited for existing FDTD modelling codes. Although, a second order PML might perform better in some cases than the classic or CFS-PML the increased computational requirements and the difficulty in optimising a greater number of PML parameters must be taken into account in deciding the most appropriate PML for a given seismic modelling problem. ",

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AU - Melling, S

AU - Connolly, David

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N2 - An implementation of a second order unsplit perfectly matched layer (PML) absorbing boundary condition is presented. The formulation is given in the context of seismic modelling and simple models are used to showcase the increased performance. The formulation is presented as a correction procedure to the unchanged governing equations. This approach makes the implementation especially suited for existing FDTD modelling codes. Although, a second order PML might perform better in some cases than the classic or CFS-PML the increased computational requirements and the difficulty in optimising a greater number of PML parameters must be taken into account in deciding the most appropriate PML for a given seismic modelling problem.

AB - An implementation of a second order unsplit perfectly matched layer (PML) absorbing boundary condition is presented. The formulation is given in the context of seismic modelling and simple models are used to showcase the increased performance. The formulation is presented as a correction procedure to the unchanged governing equations. This approach makes the implementation especially suited for existing FDTD modelling codes. Although, a second order PML might perform better in some cases than the classic or CFS-PML the increased computational requirements and the difficulty in optimising a greater number of PML parameters must be taken into account in deciding the most appropriate PML for a given seismic modelling problem.

U2 - 10.3997/2214-4609.20143325

DO - 10.3997/2214-4609.20143325

M3 - Abstract

T2 - 18th EAGE European Meeting of Environmental and Engineering Geophysics

Y2 - 3 September 2012 through 5 September 2012

ER -

A second order PML Implementation for FDTD Seismic Modelling

Abstract

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