歪計により観測された東海地域の短期的スロースリップ（1984～2005年）

• 小林 昭夫

  気象庁気象研究所

• 山本 剛靖

  気象庁気象研究所

• 中村 浩二

  気象庁地震火山部

• 木村 一洋

  気象庁地震火山部

書誌事項

タイトル別名

• Short-term Slow Slip Events Detected by the Strainmeters in Tokai Region in the Period from 1984 to 2005
• ヒズミケイ ニ ヨリ カンソク サレタ トウカイ チイキ ノ タンキテキ スロースリップ 1984 2005ネン

抄録

A short-term slow slip event (SSE) synchronizing with an activity of low frequency earthquakes occurred beneath Aichi prefecture on July 20-22, 2005. Characteristic strain changes caused by the short-term SSE were recorded by the strainmeters of Japan Meteorological Agency. We examined the strain data of the Tokai area in detail since July 1984. As a result, eleven strain changes were detected in about fifteen years from July 1984 to August 1999, during which only the data of volumetric strainmeters were available. Twenty strain changes were detected in six years from September 1999 to August 2005, during which the data of multi-component strainmeters and information of low frequency earthquakes were also available. The detected strain changes were classified into three types. The three types correspond to different active areas of low frequency earthquakes. The three patterns of the observed stain changes were explained by assuming rectangular faults in the active areas of low frequency earthquakes. It was found that the short-term SSE occurred more frequently in the periods of 1987-1989 and 2003-2004. These active periods roughly agree with that of the long-term SSE in the Tokai region.

収録刊行物

• 地震　第２輯

  地震　第２輯 59 (1), 19-27, 2006

  公益社団法人 日本地震学会

キーワード

• Slow slip
• Low-frequency earthquake
• Strainmeter
• Tokai earthquake

詳細情報

• CRID: 1390282679281457024
• NII論文ID: 10020293872
• NII書誌ID: AN00305741
• DOI: 10.4294/zisin.59.19
• ISSN: 18839029
• ISSN: 2186599X
• ISSN: 00371114
• NDL書誌ID: 8530131
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8530131
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可