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タイトル: 九州日奈久断層域における地殻構造探査
その他のタイトル: Seismic Expedition in the Hinagu Fault Area, Kyushu Island, Japan
著者: 2003年九州日奈久断層域構造探査グループ
著者(別言語): The Research Group for the 2003 Hinagu Fault Seismic Expedition
キーワード: crust
Beppu-Shimabara graben
発行日: 2008年
出版者: 東京大学地震研究所
掲載誌情報: 地震研究所彙報. 第83号第1冊, 2008, pp. 103-130
抄録: The Hinagu fault system, Kyushu, Japan, is located in the westernmost part of the Beppu-Shimabara graben. This fault system is characterized by a quite high seismic activity and estimated to have a higher seismic risk among active faults in Kyushu Island. In 2003, we conducted an extensive seismic expedition in and around the Hinagu fault area. This expedition involves seismic refraction/wide-angle reflection experiment using dynamite shots and seismic array observation both for the active and passive seismic sources. For the refraction/wide-angle reflection study, two profile lines of 56.4 and 32.1km lengths were set in EW and NNE-SSW directions, respectively, on which 7 dynamite shots of 100-200kg charge and 359 recorders were deployed. The array observations, which were designed for high-resolution imaging of crustal scatterors and reflectors, were undertaken at 5 sites in the fault region. This paper presents the outline of this seismic expedition and fundamental data obtained.
URI: http://hdl.handle.net/2261/16682
ISSN: 00408972


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