比較的規模の大きな地下活断層の特徴とその調査手法の検討

• 木下 博久

  核燃料サイクル開発機構東濃地科学センター

• 野原 壯

  核燃料サイクル開発機構東濃地科学センター

• 中田 高

  広島工業大学環境学部環境情報学科

• 池田 安隆

  東京大学大学院理学系研究科

• 伊藤 潔

  京都大学防災研究所地震予知研究センター

• 大槻 憲四郎

  東北大学大学院理学研究科

• 鷺谷 威

  名古屋大学大学院環境学研究科

• 高田 圭太

  復建調査設計株式会社

• 遠田 晋次

  産業技術総合研究所活断層研究センター

書誌事項

タイトル別名

• A feasibility study on research techniques for subsurface active faults

抄録

Results of numerical analyses and field studies in the epicenter area of the 2000 Tottoriken-seibu earthquake suggest that several research techniques are effective for identifying subsurface active faults unaccompanied with remarkable surface earthquake faults. Field observation of the lineaments found in the area by detailed air-photo interpretation revealed that most of them are accompanied by faults and/or dikes, and some of them show minor slips at the time of the earthquake.<BR>Crustal deformation caused by the activity of the subsurface seismogenic faults is deduced by numerical analyses based on seismic and geodetic data. The vertical deformation assumed from the height changes of the terraces along the river across the epicenter area suggests that cumulative uplift and subsidence associated with left-lateral strike-slip has been continuing. Offsets rate of the streams and uplift rate of the river terraces surfaces show good agreement with the estimate from the parameter of the earthquake faults model.<BR>Identification of active faults without clear surface evidence before occurrence of earthquakes is a difficult issue, and the techniques adopted in this study will probably provide relevant information effective to locate subsurface active faults.

収録刊行物

• Active Fault Research

  Active Fault Research 2005 (25), 27-37, 2005

  Japanese Society for Active Fault Studies

キーワード

• 2000年鳥取県西部地震
• 累積性
• 変動地形
• 数値解析
• 調査手法

詳細情報

• CRID: 1390001204429684608
• NII論文ID: 130003355756
• DOI: 10.11462/afr1985.2005.25_27
• ISSN: 09181024
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可