A block-fault model for deformation of the Japanese Islands derived from continuous GPS observation
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- Hashimoto Manabu
- RCEP, Disaster Prevention Research Institute, Kyoto University
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- Miyazaki Shin'ichi
- Geographical Survey Institute
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- Jackson David D.
- Department of Earth and Space Sciences, UCLA
書誌事項
- タイトル別名
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- block fault model for deformation of the Japanese Islands derived from continuous GPS observation
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We interpret the continuous GPS data for the Japanese islands from 1996 to 1999 using the model of Hashimoto and Jackson (1993). In this model crustal deformation is represented by a combination of rigid block motions and deformation due to slip deficits along the fault-bounding blocks. Hashimoto and Jackson used 19 blocks, 104 faults, and geodetic data spanning 100 years. In the present work we assume the same fault and block geometry, and we use only the continuous GPS data. Compared to the previous study, the motions of the major blocks are a bit larger: 107 ± 8 mm/yr for the Pacific plate, 47 ± 2 mm/yr for the Philippine Sea plate, and 24 ± 2 mm/yr for the Izu block, all relative to the Amurian plate. The estimated slip directions on active inland faults are now more consistent with geological estimates. Slip deficit rates exceed 10 mm/yr along the Itoigawa-Shizuoka Tectonic Line, Shinanogawa Seismic Zone, Atotsugawa fault, Hanaori fault, Arima-Takatsuki Tectonic Line, Rokko faults, Median Tectonic Line, and southern boundary of the Beppu-Shimabara graben. Some interplate faults along the Japan and Kurile trenches have slip deficit rates larger than 100 mm/yr, although postseismic deformation from the 1994 Far Off Sanriku earthquake may contaminate these estimates. An interplate fault off Kyushu has a negative slip deficit, possibly due to post-seismic movements from the 1996 events in Hyuganada.
収録刊行物
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- Earth, Planets and Space
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Earth, Planets and Space 52 (11), 1095-1100, 2000
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
- 1390001206514076288
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- NII論文ID
- 10006712767
- 130003956122
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- NII書誌ID
- AA11211921
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- ISSN
- 18805981
- 13438832
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- NDL書誌ID
- 5606725
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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
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