3D CSEM frequency-domain modeling and inversion algorithms including topography

Title
3D CSEM frequency-domain modeling and inversion algorithms including topography
Author
변중무
Keywords
CSEM; electromagnetic; mining; 3D; frequency-domain
Issue Date
2015-10
Publisher
Society of Exploration Geophysicists
Citation
SEG Technical Program Expanded Abstracts 2015, Page. 828-832
Abstract
Rough topography encountered when conducting controlled-source electromagnetic (CSEM) surveys significantly distorts electromagnetic (EM) fields. However, there have been few studies on the accurate consideration of topography into modeling and inversion algorithms. We have developed a three-dimensional (3D) CSEM inversion algorithm based on the forward modeling algorithm which rigorously incorporates topography based on an edge-based finite element (EFEM) method. We focused on the strict reflection of topographic information to the modeling algorithm and the accuracy of the algorithm was verified through comparing with the semi-analytic solutions. In numerical experiments, we successfully performed the inversion of data obtained from a ridge and valley model. This implies that real data acquired at rough terrain can be handled reasonably by using the inversion algorithm developed in this study. © 2015 SEG.
URI
http://library.seg.org/doi/10.1190/segam2015-5898964.1http://hdl.handle.net/20.500.11754/28125
ISSN
1052-3812; 1949-4645
DOI
10.1190/segam2015-5898964.1
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING(자원환경공학과) > Articles
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