Interseismic Gravity Change at a Subducting Plate Margin: A Paradoxical Observational Result at Omaezaki, Tokai, Japan

  • Shuhei Okubo
  • Shigeo Yoshida
  • Akito Araya
Conference paper
Part of the International Association of Geodesy Symposia book series (IAG SYMPOSIA, volume 117)

Abstract

We find regional gravity decrease during an interseismic period at a subduction plate boundary where the land is steadily subsiding. This paradoxical finding poses a challenging problem on the subduction dynamics at converging plate boundaries.

Keywords

Migration Subduction Trench Geophysics 

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References

  1. Geographical Survey Institute (1996): Crustal movements in the Tokai district, Rep. Coordinating Committee Earthquake Prediction, 56, 346–367.Google Scholar
  2. Kuroishi, Y. and M. Murakami (1991): Results of absolute gravity measurements by Geographical Survey Institute (III), Bull. Geographical Survey Institute, 36, 21–31.Google Scholar
  3. Tsubokawa, T., H. Hanada, S. Tsuruta and S. Nakai (1992): Absolute gravity measurements at Omaezaki, 78-th Meeting Program and Abstracts, the Geodetic Society of Japan, 57–58.Google Scholar
  4. Mogi, K. (1993): Recent vertical movement of the ground along the Suruga Bay estimated from the annual mean sea level data, Rep. Coordinating Committee Earthquake Prediction, 49, 363–370.Google Scholar
  5. Niebauer, T. M., G. Sasagawa, J. E. Faller, R. Hilt and F.J. Klopping (1995): A new generation of absolute gravimeters, Metrologia, 32, 159–180.CrossRefGoogle Scholar
  6. Nagoya University, Kyoto University, Geographical Survey Institute, National Astronomical Observatory Mizusawa (1996): Gravity change in Tokai district, Rep. Coordinating Committee Earthquake Prediction, 55, 461–463.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • Shuhei Okubo
    • 1
  • Shigeo Yoshida
    • 1
  • Akito Araya
    • 1
  1. 1.Earthquake Research InstituteUniversity of TokyoBunkyo-ku, Tokyo 113Japan

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