Gravity Inversion.

• OKUBO Shuhei

  Earthquake Research Institute, University of Tokyo

Bibliographic Information

Other Title

• 重力のインバージョン
• ジュウリョク ノ インバージョン

Abstract

Inversion of potential fields such as gravity has inherent non-uniqueness when it is used for estimating subsurface density structure. The ambiguity could be overcome, at least partially, (1) by using a priori information (such as pointwise drilling data) and (2) by incorporating independent observations (such as geomagnetic anomaly and seismic data). We present several examples demonstrating how gravity inversion is applied for retrieving geologically interesting features (meteor crater, salt dome, volcano, active fault etc.). We emphasize that cooperative inversion should be used whenever possible to obtain better resolution on the underground structure.<BR>Recent advance of the gravity change theory enables us to discuss how to model seismic and volcanic events from gravity change data. Since gravity is sensitive to migration of matter under the ground, gravity inversion is useful in estimating flows of water and magma during such events. Joint inversion of gravity data with conventional crustal movement data proves to be quite effective in modeling the 1989 earthquake swarm and submarine eruption, off Ito.

Journal

• Journal of Geography (Chigaku Zasshi)

  Journal of Geography (Chigaku Zasshi) 104 (7), 1047-1062, 1995

  Tokyo Geographical Society

Keywords

• Earth-Surface Processes
• Geology
• Geophysics
• Geography, Planning and Development
• Global and Planetary Change

Details

• CRID: 1390001204229806208
• NII Article ID: 10002233842
• NII Article ID: 10003515266
• NII Book ID: AN00322536
• DOI: 10.5026/jgeography.104.7_1047
• ISSN: 18840884
• ISSN: 0022135X
• NDL BIB ID: 3924695
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3924695
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed