サハリンの活断層の分布と概要 Preliminary Report on Active Faults in Sakhalin, Russia

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著者

    • 鈴木 康弘 SUZUKI Yasuhiro
    • 愛知県立大学情報科学部地域情報科学科 Faculty of Information Science and Technology, Aichi Prefectural University
    • STREL'TSOV Mihail I.
    • ロシア科学アカデミー・極東海洋地質学地球物理学研究所 Institute of Marine Geology and Geophysics, Russian Academy of Science
    • KOZHURIN Andrei I.
    • ロシア科学アカデミー・地質研究所 Geological Institute, Russian Academy of Science
    • BULGAKOV Rustam
    • ロシア科学アカデミー・極東海洋地質学地球物理学研究所 Institute of Marine Geology and Geophysics, Russian Academy of Science
    • TERENTIEF Nikolai
    • ロシア天然資源省・極東地質情報センター Far-East Geological Information Center, Ministry of Natural Resources, Russian Federation
    • IVASHCHENKO Alexei I.
    • ロシア科学アカデミー・極東海洋地質学地球物理学研究所 Institute of Marine Geology and Geophysics, Russian Academy of Science

抄録

We have prepared a preliminary active fault map of Sakhalin, Russia, based on an interpretation of aerial photographs and satellite images. Major active structures include 110-km-long active faults along the western margin of the Yuzhno-Sakhalinsk Lowland in southern Sakhalin and 120-km-long active faults along the western margin of the Poronaysk Lowland in central Sakhalin. These active faults are parallel to but are located as far as 10 km east of the Tym-Poronaysk fault. Geomorphic surfaces on the upthrown side of the fault are tilting westward, therefore, the faults are considered to be west-dipping low-angle reverse faults. The vertical component of slip rates of these faults are >0.3 mm/yr in southern Sakhalin and 1.0-1.5 mm/yr in central Sakhalin. The net-slip rates could be much greater because the faults are low-angle reverse faults. If these faults rupture along their entire length during individual earthquakes, the earthquakes could be as great as M7.6-7.7. In northern Sakhalin, we have identified a series of right-lateral strike-slip faults, including the 1995 Neftegorsk earthquake fault. The slip rates for these faults are estimated at 4 mm/yr. The right-lateral shear in northern Sakhalin and east-west compression in central and southern Sakhalin may reflect relative plate motion in far-east Asian region.

収録刊行物

  • 地學雜誌  

    地學雜誌 109(2), 311-317, 2000-04-25 

    Tokyo Geographical Society

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各種コード

  • NII論文ID(NAID)
    10004672381
  • NII書誌ID(NCID)
    AN00322536
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    0022135X
  • NDL 記事登録ID
    5368758
  • NDL 雑誌分類
    ZM41(科学技術--地球科学)
  • NDL 請求記号
    Z15-169
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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