Hypocenter distribution of the main- and aftershocks of the 2005 Off Miyagi Prefecture earthquake located by ocean bottom seismographic data
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- Hino Ryota
- Graduate School of Science, Tohoku Universit
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- Yamamoto Yojiro
- Graduate School of Science, Tohoku Universit
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- Kuwano Asako
- Graduate School of Science, Tohoku Universit
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- Nishino Minoru
- Graduate School of Science, Tohoku Universit
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- Kanazawa Toshihiko
- Earthquake Research Institute, The University of Tokyo
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- Yamada Tomoaki
- Earthquake Research Institute, The University of Tokyo
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- Nakahigashi Kazuo
- Earthquake Research Institute, The University of Tokyo
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- Mochizuki Kimihiro
- Earthquake Research Institute, The University of Tokyo
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- Shinohara Masanao
- Earthquake Research Institute, The University of Tokyo
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- Minato Kouetsu
- Sendai District Meteorological Observatory, Japan Meteorological Agency
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- Aoki Gen
- Sendai District Meteorological Observatory, Japan Meteorological Agency
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- Okawara Nariaki
- Seismological and Volcanological Department, Japan Meteorological Agency
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- Tanaka Masayuki
- Seismological and Volcanological Department, Japan Meteorological Agency
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- Abe Masao
- Seismological and Volcanological Department, Japan Meteorological Agency
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- Araki Eiichiro
- Japan Agency for Marine-Earth Science and Technology
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- Kodaira Shuichi
- Japan Agency for Marine-Earth Science and Technology
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- Fujie Gou
- Japan Agency for Marine-Earth Science and Technology
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- Kaneda Yoshiyuki
- Japan Agency for Marine-Earth Science and Technology
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説明
The preliminary hypocenter distribution of the 2005 Off Miyagi Prefecture earthquake and its aftershocks is estimated using data from five ocean bottom and six onshore seismic stations located around the rupture area of the earthquake. The epicenter of the mainshock is relocated at 38.17°N, 142.18°E, and the focal depth is estimated to be 37.5 km. The aftershocks surrounding the mainshock hypocenter form several clusters that are concentrated along a distinct landward dipping plane corresponding to the plate boundary imaged by the previous seismic experiment. The strike and dip angles of the plane agree well with those of the focal mechanism solution of the mainshock. The size of the plane is about 20×25 km2 in the strike and dip directions, which is similar to that of the large coseismic slip area. The up-dip end of the planar distribution of the aftershocks corresponds to the bending point of the subducting oceanic plate, suggesting that the geometry of the plate boundary affects the spatial extent of the asperity of the 2005 earthquake.
収録刊行物
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- Ｅａｒｔｈ， Ｐｌａｎｅｔｓ ａｎｄ Ｓｐａｃｅ
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Ｅａｒｔｈ， Ｐｌａｎｅｔｓ ａｎｄ Ｓｐａｃｅ 58 (12), 1543-1548, 2006
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
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詳細情報 詳細情報について
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- CRID
- 1390001206512047360
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- NII論文ID
- 10024495578
- 130003956565
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- NII書誌ID
- AA11211921
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- ISSN
- 18805981
- 13438832
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- NDL書誌ID
- 8648654
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
