A Network of Superconducting Gravimeters Detects Submicrogal Coseismic Gravity Changes-Reference-Cited by-同舟云学术

A Network of Superconducting Gravimeters Detects Submicrogal Coseismic Gravity Changes

Published:2004-10-15 Issue:5695 Volume:306 Page:476-478
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Imanishi Yuichi¹²³⁴,Sato Tadahiro¹²³⁴,Higashi Toshihiro¹²³⁴,Sun Wenke¹²³⁴,Okubo Shuhei¹²³⁴

Affiliation:

1. Ocean Research Institute, University of Tokyo, 1-15-1, Minamidai, Nakano, Tokyo 164-8639, Japan.

2. National Astronomical Observatory of Japan, 2-12, Hoshigaoka, Mizusawa, Iwate 023-0861, Japan.

3. Department of Geophysics, Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan.

4. Earthquake Research Institute, University of Tokyo, 1-1-1, Yayoi, Bunkyo, Tokyo 113-0032, Japan.

Abstract

With high-resolution continuous gravity recordings from a regional network of superconducting gravimeters, we have detected permanent changes in gravity acceleration associated with a recent large earthquake. Detected changes in gravity acceleration are smaller than 10 –8 meters seconds –2 (1 micro-Galileo, about 10 –9 times the surface gravity acceleration) and agree with theoretical values calculated from a dislocation model. Superconducting gravimetry can contribute to the studies of secular gravity changes associated with tectonic processes.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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