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ID 13861
JaLCDOI
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タイトル(別表記)
重力異常データのカラムインバージョンから見積もったモホ不連続面の形状
フルテキストURL
著者
福永 真理子 Department of Earth Sciences, Okayama University
小田 仁 Department of Earth Sciences, Okayama University Kaken ID publons researchmap
志知 竜一 Faculty of Engineering, Chubu University
抄録
We present an inversion method, called "column inversion", to retrieve two-dimensional variation of the depth to the Moho discontinuity from Bouguer gravity anomaly data, assuming that a density jump between the lower crust and upper mantle is regionally invariant. The inversion method is applied to reveal the apatial undulation of the Moho discontinuity in the Chugoku and Shikoku districts, southwest Japan. The result shows that the Moho is deep in the land area and shallow in the sea area. The Moho is anomalously deep in the west regions of Shikoku and Chugoku districts, where the prominent negative gravity anomaly is observed. The two-dimensional variation of the Moho depth is quite similar to that determined by inversion of the first P-arrival time data. The column inversion of the Bouguer gravity anomaly data is proved to be useful for determining the fine structure of the Moho discontinuity undulation.
キーワード
Bouguer Gravity Anomaly
Column Inversion
Moho Discontinuity
Chugoku and Shikoku Districts
出版物タイトル
Okayama University Earth Science Report
発行日
2004-12-31
11巻
1号
出版者
岡山大学理学部地球科学教室
出版者(別表記)
Department of Earth Sciences Faculty of Science, Okayama University
開始ページ
1
終了ページ
5
ISSN
1340-7414
NCID
AN10506284
資料タイプ
紀要論文
OAI-PMH Set
岡山大学
言語
English
著作権者
岡山大学地球科学研究報告編集委員会
論文のバージョン
publisher
NAID
Eprints Journal Name
esr