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/2261/12773

タイトル: 微小地震反射波の観測と溶融体をともなう地殻深部不連続面の検出
その他のタイトル: Deep Crustal Discontinuity Underlain by Molten Material as Deduced from Reflection Phase on Microearthquake Seismograms
著者: 溝上, 恵
著者(別言語): Mizoue, Megumi
発行日: 1981年3月7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55冊第3号, 1981.3.7, pp. 705-735
抄録: Microearthquake seismograms recorded by stations located in or bordering 1) the Rio Grande rift near Socorro, New Mexico, USA, 2) the Nikko-Ashio region, northern Kwanto district, Japan and 3) the Wakayama region, northwestern part of the Kii Peninsula, Japan, frequently have two sharp impulsive phases following the direct S. In each of these three regions, the two phases recorded at very small epicentral distances are identified as SxP and SxS reflections from a velocity discontinuity in the deeper part of the earth's crust. Travel times of the reflected phases provide a reliable information of the depth of the discontinuity, while amplitude ratios of the reflected phases can be used to estimate the velocity contrast across the discontinuity. The use of the reflected phases on the microearthquake seismograms proved to be a practical and highly promising method for the detection of unusual crustal discontinuity underlain by molten material with very low rigidity.
URI: http://hdl.handle.net/2261/12773
ISSN: 00408972


ファイル 記述 サイズフォーマット
ji0553007.pdf2.05 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