UTokyo Repository 東京大学

UTokyo Repository >
131 地震研究所 >
東京大学地震研究所彙報 >

このページ(論文)をリンクする場合は次のURLを使用してください: http://hdl.handle.net/2261/16680

タイトル: 1998年東北奥羽脊梁山地東麓における稠密屈折・広角反射法探査
その他のタイトル: 1998 Dense Seismic Refraction/Wide-Angle Experiment in the Eastern Flank of the Ou Backbone Range, Northern Honshu, Japan
著者: 爆破地震動研究グループ
著者(別言語): The Research Group for Explosion Seismology
キーワード: refraction
Northern Honshu
1998 seismic experiment
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. 43-75
抄録: In 1997 and 1998, intensive wide-angle seismic experiments were carried out in the northern part of Honshu Island, Japan to clarify various scale crustal deformation ongoing in the northern Hon-shu arc. The 1998 experiment was intended to reveal the crustal scale structural heterogeneity west of the western boundary fault of the Kitakami Lowland. In a 20km×50km area, 236 receivers were deployed to record 13 dynamite shots detonated on August 10. On September 3, M 6.1 event oc-curred in the vicinity of our study area. To investigate seismic velocity change associated with the event, another experiment was undertaken on November 8 using an additional dynamite source at the same place of the northernmost shot point in the August experiment. The data qualities of these two experiments are good, and first arrivals can be traced in almost the entire part of the experi-mental area. They show significant travel time change across the western boundary fault of the Kitakami Lowland. In the NS profile, a remarkable later phase is recognized, which is interpreted as a wide-angle reflection from midcrustal interface at a depth of 6-7km. This paper presents the outline of the experiments and fundamental data obtained.
URI: http://hdl.handle.net/2261/16680
ISSN: 00408972


ファイル 記述 サイズフォーマット
IHO83103.pdf5.84 MBAdobe PDF見る/開く



Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - ご意見をお寄せください