The slip-rate along the northern Itoigawa-Shizuoka tectonic line active fault system, central Japan

• Matsuta Nobuhisa

  Earthquake Research Institute, University of Tokyo

• Ikeda Yasutaka

  Department of Earth and Planetary Science, University of Tokyo

• Sato Hiroshi

  Earthquake Research Institute, University of Tokyo

書誌事項

タイトル別名

• slip rate along the northern Itoigawa Shizuoka tectonic line active fault system central Japan

抄録

The slip-rates on the northern extent of Itoigawa-Shizuoka tectonic line (ISTL) are estimated based on seismic reflection profiles, drill core data and analysis of tectonic geomorphology. The ISTL is a major tectonic line that passes through the Honshu Island of Japan, and its northern and central segments form an active fault system characterized by high slip-rates. In the Kamishiro basin, near the northern end of the ISTL active fault system, the rate of net slip is estimated to be 4.4-5.4 m/kyr over the last 28 ka, with a vertical-separation-rate of 2.2-2.7 m/kyr. In the Omachi area, south of the Kamishiro basin, the Quaternary slip-rate is estimated to be at least 2.9 m/kyr based on the balanced cross-section derived from reflection profiles and surface geology. The dip angle of 30° determined from the Omachi seismic profile suggests a vertical-separation-rate of at least 1.5 m/kyr. Based on compiled evidence from the available geomorphological and paleo-seismological data, vertical-slip-rates of 1.0-2.9 m/kyr are inferred for the region between Hakuba and Toyoshina over the past 3 ka. The northern ISTL exhibits dip-slip-rate of at least 2.9 m/kyr, with a constant average slip-rate of 2.0-5.8 m/kyr since the Early Quaternary. A paleoseismological data and long-term slip-rate along the northern ISTL has potential for a large earthquake.

収録刊行物

• Ｅａｒｔｈ，　Ｐｌａｎｅｔｓ　ａｎｄ　Ｓｐａｃｅ

  Ｅａｒｔｈ，　Ｐｌａｎｅｔｓ　ａｎｄ　Ｓｐａｃｅ 56 (12), 1323-1330, 2004

  地球電磁気・地球惑星圏学会 、公益社団法人 日本地震学会、特定非営利活動法人 日本火山学会、日本測地学会、日本惑星科学会

キーワード

• Northern Itoigawa-Shizuoka tectonic line
• active fault
• tectonic geomorphology
• slip-rate

詳細情報

• CRID: 1390282681490855040
• NII論文ID: 10017467359
• NII論文ID: 130003781006
• NII書誌ID: AA11211921
• DOI: 10.1186/bf03353357
• ISSN: 18805981
• ISSN: 13438832
• NDL書誌ID: 7279609
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7279609
• Web Site: https://link.springer.com/content/pdf/10.1186/BF03353357.pdf
• Web Site: https://link.springer.com/article/10.1186/BF03353357/fulltext.html
• Web Site: http://link.springer.com/content/pdf/10.1186/BF03353357
• 本文言語コード: en
• データソース種別:
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  • NDL
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