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- 堤 浩之
- 京都大学大学院理学研究科地球物理学教室
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- KOZHURIN Andrei I.
- Geological Institute, Russian Academy of Science
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- STREUTSOV Mihail I.
- Institute of Marine Geology and Geophysics, Russian Academy of Science
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- 植木 岳雪
- 東京都立大学大学院理学研究科地理学教室
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- 鈴木 康弘
- 愛知県立大学情報科学部地域情報科学科
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- 渡辺 満久
- 東洋大学社会学部社会学科
書誌事項
- タイトル別名
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- Active Faults and Paleoseismology in Northeastern Sakhalin, Russia
- サハリン ホクトウブ ノ カツダンソウ ト コ ジシン
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We have mapped a series of north-trending faults along the northeastern coast of Sakhalin, Russia, based on aerial photograph interpretation and field observations. These faults include the Upper Pil'tun fault which ruptured during the 1995, Mw 7.0 Neftegorsk earthquake, and the Ekhabi-Pil'tun and Garomay faults east of the surface ruptures. The coseismic displacement associated with the 1995 earthquake shows that the Upper Pil'tun fault is a right-lateral strike-slip fault. Right-lateral stream offsets as much as 80m demonstrate that similar earthquakes have occurred repeatedly along the fault in the late Quaternary. The fault extends for 10 km further to the south beyond the southern termination of the 1995 surface breaks, which is consistent with the coseismic ground deformation detected by SAR interferometry. The Ekhabi-Pil'tun fault trends N10° W to N10°E with a series of fault scarps down-to-the-west across low-relief hilly terrain eroded byperiglacial processes. Right-laterally offset streams and lake shores suggest thatthe Ekhabi-Pil'tun fault is also a right-lateral strike-slip fault. A 3-m-deep trench across the fault north of the Sabo River contains geologic evidence of two episodes of pre -historic surface faulting. The most recent event occurred after 4000 yr B.P. and the penultimate earthquake occurred at about 6200 yr B.P. The interval between the events is greater than 2000 years, which is significantly longer than that obtained for the Upper Pil'tunfault by previous trench excavations.
収録刊行物
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- 地学雑誌
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地学雑誌 109 (2), 294-301, 2000
公益社団法人 東京地学協会
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詳細情報 詳細情報について
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- CRID
- 1390001204228816768
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- NII論文ID
- 10004672359
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- NII書誌ID
- AN00322536
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- ISSN
- 18840884
- 0022135X
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- NDL書誌ID
- 5368734
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- データソース種別
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- JaLC
- NDL
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