OceanRep
Marine CSEM Inversion Using the QN-BFGS Method.
Li, Gang, Li, Yuguo and Liu, Ying (2013) Marine CSEM Inversion Using the QN-BFGS Method. [Poster] In: Near Surface Geophysics Asia Pacific Conference. , 17-19 July 2013, Beijing, China . DOI 10.1190/nsgapc2013-155.
Full text not available from this repository.Abstract
In this paper we present an one-dimensional inversion algorithm for marine controlled-source electromagnetic (CSEM) data. The algorithm is based on a quasi-Newton (QN) method with the Broyden–Fletcher–Goldfarb–Shanno (BFGS) update. One can update the Hessian matrix with the BFGS iteration scheme rather than computing the Hessian matrix itself in the QN-BFGS inversion. Thus this method is superior to other methods such as the Gauss-Newton (GN) inversion. We use a L2-norm least squares regulation scheme to generate a smooth solution. The data and the model-constraint part of the objective function are weighted by the trade-off parameter (also called the Lagrangian multiplier) which is determined automatically using an effective empirical method to enhance the robustness of this method.
Document Type: | Conference or Workshop Item (Poster) |
---|---|
Additional Information: | pp. 645-649 |
Keywords: | inversion, CSEM, algorithm, 2D, 3D |
Publisher: | Society of Exploration Geophysicists, Australian Society of Exploration Geophysicists, Chinese Geophysical Society, Korean Society of Earth and Exploration Geophysicists, and Society of Exploration Geophysicists of Japan |
Date Deposited: | 27 Mar 2017 08:11 |
Last Modified: | 27 Mar 2017 08:11 |
URI: | https://oceanrep.geomar.de/id/eprint/37157 |
Actions (login required)
View Item |
Copyright 2023 | GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel | All rights reserved
Questions, comments and suggestions regarding the GEOMAR repository are welcomed
at bibliotheksleitung@geomar.de !