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タイトル: 70.阿寺断層地域における光波測量
その他のタイトル: 70. Geodimeter Surveys across the Atera Fault : Field Expeditions after the Earthquake of the Central Part of Gifu Prefecture, September 9, 1969
著者: 笠原, 慶一
岡田, 惇
柴野, 睦郎
佐々木, 幸一
松本, 滋夫
安藤, 雅孝
著者(別言語): Kasahara, Keichi
Okada, Atusi
Shibano, Mutsuro
Sasaki, Koichi
Matsumoto, Shigeo
Ando, Masataka
発行日: 1971年2月27日
出版者: 東京大学地震研究所
掲載誌情報: 東京大学地震研究所彙報. 第48冊第6号, 1971.2.27, pp. 1235-1240
抄録: The Tsukechi base-line network was resurveyed by Geodimeter in order to establish movement on the Atera Fault associated with the Gifu Earthquake on Sept. 9th, 1969 (λ=137°04', ψ=35°47', M=6.6, very shallow). In all, three surveys of the Tsukechi network were executed before the earthquake, and two surveys were carried out subsequently. The largest deformation observed since 1966 is a 30mm extension of the Hirono base-line. Although this amount is small, it exceeds the possible total errors of present and previous measurements doubtlessly. Further, the extension of this baseline is consistent with the left lateral geological history of the Atera Fault. Thus although the 30mm displacement is small, it still demonstrates deformation across this fault in association with the Gifu Earthquake. Subsequent to this earthquake, the Gero base-line network was established and two surveys have been carried out. Although the shortening of Norimasa line and the lengthening of the Butai-toge line are consistent with the left lateral displacement history of the Atera Fault, these changes are too small to conclude definitely.
URI: http://hdl.handle.net/2261/12568
ISSN: 00408972


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