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- Uchida Toshihiro
- Geological Survey of Japan
書誌事項
- タイトル別名
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- Two-Dimensional Inversion of Oklahoma E
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Two-dimensional inversion has been applied to Electromagnetic Array Profiling (EMAP) data obtained in Oklahoma, USA. Since the data comprise scalar impedances measured along a survey line, a TM-mode inversion was performed on the original data, under the assumption that the survey line is perpendicular to the geologic strike. The inversion method applied is a linearized least-squares scheme with smoothness regularization. The “optimum smoothness” is selected based on a statistical criterion, ABIC (Akaike's Bayesian Information Criterion), which is derived from Bayesian statistics and the entropy-maximization theorem. Starting from a homogeneous earth as an initial guess, the inversion iteratively modifies the model structure until the observations are matched in a statistical sense and parameter modification becomes almost zero. The final two-dimensional models generally show a very conductive host formation (less than 10 Ω·m) with two large resistive bodies of approximately 100 Ω·m embedded near the middle of the survey line.
収録刊行物
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- Journal of geomagnetism and geoelectricity
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Journal of geomagnetism and geoelectricity 49 (6), 791-800, 1997
地球電磁気・地球惑星圏学会
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詳細情報 詳細情報について
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- CRID
- 1390282681486691968
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- NII論文ID
- 130003559543
- 10002203892
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- NII書誌ID
- AA00698879
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- ISSN
- 21855765
- 00221392
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- NDL書誌ID
- 4251840
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可