巨大地震発生域周辺の地震活動に見られる静穏期から活動期への移り変わり

DOI Web Site 被引用文献2件 参考文献19件
  • 堀 高峰
    海洋科学技術センター固体地球統合フロンティア研究システム

書誌事項

タイトル別名
  • Transition from Quiet to Active Period of Seismicity Around Source Regions of Great Interplate Earthquakes.
  • キョダイジシン ハッセイイキ シュウヘン ノ ジシン カツドウ ニ ミラレル セイオンキ カラ カツドウキ エ ノ ウツリカワリ

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抄録

We introduce a criterion for an active period of seismicity around the source region of a great interplate earthquake. It is based on stress change caused by the great earthquake. We test this criterion by applying it to the seismicity in southwest Japan before and after the 1944 Tonankai and 1946 Nankai earthquakes. We then apply it to more recent seismicity in southwest Japan and in the San Francisco Bay area. The results show that the seismicity in southwest Japan is now in transition from a quiet to active period and that the San Francisco Bay area is still in a quiet period. In other words, the probability of large earthquakes in southwest Japan is higher than it was in the preceding quiet period. Although the seismicity in the San Francisco Bay area was active in the 1980's, the probability of a large earthquake occurring is low.

収録刊行物

  • 地学雑誌

    地学雑誌 111 (2), 192-199, 2002

    公益社団法人 東京地学協会

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