Correlation of Vertical Movement and Gravity Anomalies in Two Zones of the Japanese Islands

  1. Leon Knopoff,
  2. Charles L. Drake and
  3. Pembroke J. Hart
  1. Takeshi Dambara

Published Online: 18 MAR 2013

DOI: 10.1029/GM012p0307

The Crust and Upper Mantle of the Pacific Area

The Crust and Upper Mantle of the Pacific Area

How to Cite

Dambara, T. (2012) Correlation of Vertical Movement and Gravity Anomalies in Two Zones of the Japanese Islands, in The Crust and Upper Mantle of the Pacific Area (eds L. Knopoff, C. L. Drake and P. J. Hart), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM012p0307

Author Information

  1. Geographical Survey Institute, Meguro, Tokyo, Japan

Publication History

  1. Published Online: 18 MAR 2013
  2. Published Print: 20 APR 2012

Book Series:

  1. Geophysical Monograph Series

Book Series Editors:

  1. Waldo E. Smith

ISBN Information

Print ISBN: 9780875900124

Online ISBN: 9781118663738

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Keywords:

  • Crustal structures;
  • Earth's crust;
  • Geodetic surveys;
  • Gravity anomalies;
  • Japanese Islands;
  • Northeastern line;
  • Southwestern line;
  • Vertical movement

Summary

Data obtained recently from geodetic surveys for the Upper Mantle Project pertaining to vertical movement of the earth's crust during the past several decades and gravity anomalies on land and sea, mainly in two zontal sections along 39°10′N and 134°10′E, are discussed. These two sections can be considered to represent northeastern and southwestern parts of the Japanese Islands, respectively. Although the tendency of movements in both parts correlates well with historical or geological changes, it is uncertain, of course, that current trends will continue during the next one or two thousand years. There is a gradual change in thickness of the crust (as derived by combining gravity anomalies and data of explosion seismology) in the transition from oceanic to continental conditions along the southwestern profile and an irregular change along the northeastern profile.