Conditioning of the 3D Marine Controlled Source Electromagnetic Inversion

Pethick, Andrew; Harris, Brett

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Authors

Pethick, Andrew

Harris, Brett

Date

2010

Type

Conference Paper

Metadata

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Citation

Pethick, Andrew M. and Harris, Brett D. 2010. Conditioning of the 3D Marine Controlled Source Electromagnetic Inversion, in Anderson-Mayes, A. (ed), 21st International Geophysical Conference and Exhibition, Aug 22 2010, pp. 91. Darling Harbour, NSW: CSIRO Publishing.

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Source Conference

21st International Geophysical Conference and Exhibition

ISSN

1443-2471

School

Department of Exploration Geophysics

URI

http://hdl.handle.net/20.500.11937/44392

Collection

Curtin Research Publications

Abstract

Three dimensional inversion of Marine Controlled Source Electromagnetic data (MCSEM) data is complex. Achieving an acceptable outcome in a reasonable time frame requires considerable manual input to the problem. We proposed a methodology for preconditioning the inversion for integral equation approximated forward modeller. Both preconditioning of the inversion process and feed-back during the inversion process are used to streamline the overall 3D MCSEM inversion process. We demonstrate the influence each of the components (Ex, Ey, Ez, Hx, Hy and Hz) have on inversion. We demonstrate how preconditioning and iterative analysis of MCSEM data can lead to a more satisfactory result for 3D inversion.