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静岡大学地球科学研究報告 (1975-) >
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タイトル: 光波側距による草薙断層と麻機断層の活動監視
その他のタイトル: Monitoring on the activity of the Kusanagi and Asabata faults with laser ranging
著者: 新妻, 信明
掲載誌名: 静岡大学地球科学研究報告
出版者: 静岡大学地球科学教室
巻: 28
開始ページ: 45
終了ページ: 55
出版日付: 2001-07
NDC: 455
抄録: Automatic laser ranging has been started systematically to monitor the activity of the Kusanagi and Asabata faults along the laser paths from the Crustal Activity Observatory of Shizuoka University to Yatsuyama, Yambara, Torisaka and Shizuhata. The Udo Hills is tilting northwestward along the Kusanagi Fault and Asabata Pond is subsiding along the Asabata Fault by large-scale gravity collapse. The basal part of the collapsed Udo Block is riding on the subducting Philippine Sea Plate along the Suruga Trough. Tilt model along the faults was established and compared with the topography and geology. The gravitational collapses occurred on the northeastern corner of the submarine fan and delta body from the Abe River. The Kusanagi and Asabata faults are member of the multiple collapse system, and the other members are estimated at the southeast margin of Udo Hills. Systematic offsets have been detected by comparing air temperature calculated from laser ranging data with the surface air temperature at the Shizuoka Station of the Japan Meteorological Agency. The offsets relate to the changes in the distance of the laser paths, caused by the crustal movement. The amount of the changes is more than several cm in laser path distance. The maximum distance appeared in the middle of April 1998 just before the earthquakes to the east off Izu Peninsula, and the minimum distance appeared in the early January 2000 after the Taiwan Earthquake of September 1999 for Yatsuyama and Yambara laser paths. The distance of the Yatsuyama path increased from March 2000,then decreased in the end of September 2000,which might be related with the earthquakes and eruption of Miyake Island and earthquakes near the Niijima-Kozushima.
ISSN: 03886298 OPAC
NII論文ID: 110000413405 ciniia
NII書誌ID: AN00103190 OPAC ciniib
バージョン: publisher
出現コレクション:2001 28

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Others By: 新妻, 信明 (ニイツマ, ノブアキ) (Niitsuma, Nobuaki)



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