A dense GPS observation immediately after the 2004 mid-Niigata prefecture earthquake

• Takahashi Hiroaki

  Institute of Seismology and Volcanology, Graduate School of Science, Hokkaido University

• Matsushima Takeshi

  Institute of Seismology and Volcanology, Faculty of Sciences, Kyushu University

• Kato Teruyuki

  Earthquake Research Institute, University of Tokyo

• Takeuchi Akira

  Department of Earth Sciences, Toyama University

• Yamaguchi Teruhiro

  Institute of Seismology and Volcanology, Graduate School of Science, Hokkaido University

• Kohno Yuhki

  Institute of Seismology and Volcanology, Faculty of Sciences, Kyushu University

• Katagi Takeshi

  Institute of Seismology and Volcanology, Faculty of Sciences, Kyushu University

• Fukuda Jun'ichi

  Earthquake Research Institute, University of Tokyo

• Hatamoto Kazuya

  Department of Earth Sciences, Toyama University

• Doke Ryousuke

  Department of Earth Sciences, Toyama University

• Matsu'ura Yuki

  Department of Earth Sciences, Toyama University

• Kasahara Minoru

  Institute of Seismology and Volcanology, Graduate School of Science, Hokkaido University

書誌事項

タイトル別名

• dense GPS observation immediately after the 2004 mid Niigata prefecture earthquake

抄録

To investigate the postseismic crustal deformation associated with the 2004 mid-Niigata prefecture earthquake (M6.8), we newly started GPS observation to fill a gap of the nationwide continuous GPS network. Our GPS sites were mainly distributed in the focal region without permanent GPS site, and succeeded in obtaining the postseismic deformation. Coseismic displacements of two aftershocks were clearly detected because of immediate observation. Estimated fault parameters of the aftershock (M5.9) on November 8 occurring just beneath our GPS network indicated that geodetic data could be explained by either east- or west-dipping fault model inferred from detailed aftershock data. Moreover, clear postseismic deformation, which could be characterized by a logarithmic decay function, was observed. This signal probably suggests possible aseismic slip. Our results indicated that dense GPS observation could give important and interesting data to clarify the properties of shallow inland middle-size earthquakes.

収録刊行物

• Ｅａｒｔｈ，　Ｐｌａｎｅｔｓ　ａｎｄ　Ｓｐａｃｅ

  Ｅａｒｔｈ，　Ｐｌａｎｅｔｓ　ａｎｄ　Ｓｐａｃｅ 57 (7), 661-665, 2005

  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

• The 2004 mid-Niigata prefecture earthquake
• GPS
• postseismic deformation
• fault model
• aseismic slip.

詳細情報

• CRID: 1390282681488532864
• NII論文ID: 10017469607
• NII論文ID: 130003781096
• NII書誌ID: AA11211921
• DOI: 10.1186/bf03351844
• ISSN: 18805981
• ISSN: 13438832
• NDL書誌ID: 7379113
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7379113
• Web Site: https://link.springer.com/content/pdf/10.1186/BF03351844.pdf
• Web Site: https://link.springer.com/article/10.1186/BF03351844/fulltext.html
• Web Site: http://link.springer.com/content/pdf/10.1186/BF03351844
• 本文言語コード: en
• データソース種別:
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