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/2261/12750

タイトル: 理論歪地震記象とその応用
その他のタイトル: Theoretical Strain Seismogram and Its Applications
著者: 岡田, 義光
著者(別言語): Okada, Yoshimitsu
発行日: 1980年8月25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1号, 1980.8.25, pp. 101-168
抄録: Analytical expressions of dynamic strains and tilts on the surface of a semi-infinite medium due to a buried shear fault are derived with Cagniard's method. The essential difference compared with the solution in an infinite medium is the appearance of SP and Rayleigh waves in a semi-infinite case. Some examples of strain and tilt waveforms are illustrated and the features of each phase are investigated. For a point source, the amplitude of SP phase is comparable to that of P phase. For this reason, attention must be payed when one analyzes strain records using the solutions in an infinite medium, especially in the case of a shallow focus. For a moving source, if it propagates towards the observing point, the resultant SP phase becomes far larger than P phase by a kind of Doppler effect. Except for the cases mentioned above, the solution calculated in an infinite medium gives generally a good approximation to the exact solution in a semiinfinite medium, at least where the initial parts of waveforms are concerned.
URI: http://hdl.handle.net/2261/12750
ISSN: 00408972


ファイル 記述 サイズフォーマット
ji0551007.pdf3.83 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