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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/2261/12163

タイトル: 20. Propagation of Spheroidal Disturbances on an Elastic Sphere with a Homogeneous Mantle and a Core
その他のタイトル: 20. 流体核のある等質等方弾性球の表面を伝わるスフェロイド型の振動
著者: SATO, Yasuo
USAMI, Tatsuo
著者(別言語): 佐藤, 泰夫
宇佐美, 龍夫
発行日: 1964年12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42冊第3号, 1964.12.25, pp. 407-425
抄録: Propagation of spheroidal disturbances on an elastic sphere with a homogeneous mantle and a liquid core was studied using the method of superposition of various normal mode oscillations. The theoretical seismograms thus obtained show similar characteristics with our previous study on a homogeneous sphere, the main features found in the present study being as follows: 1) Free oscillation periods show different features from the case of a homogeneous sphere. Moreover, there exists an extra branch which lies between the fundamental and first higher modes of the case of a homogeneous sphere. This is a kind of boundary waves between two media, the mantle and the core. 2) The phase and group velocities become very complicated by the existence of a core. 3) Reflected phase at the core-mantle boundary are found in theoretical seismograms. 4) Transmitted waves through the liquid core are also seen in the seismograms. 5) Diffracted waves in the shadow zone can also be traced.
URI: http://hdl.handle.net/2261/12163
ISSN: 00408972


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