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タイトル: Movement of the Ground due to Atmospheric Disturbance in a Sea Region.
その他のタイトル: 海面大氣壓の擾亂によつて起る地動に就て
著者: Sezawa, Katsutada
Nishimura, Genrokuro
著者(別言語): 妹澤, 克雄
西村, 源六郎
発行日: 1931年9月22日
出版者: 東京帝国大学地震研究所
掲載誌情報: 東京帝国大学地震研究所彙報. 第9冊第3号, 1931.9.22, pp.291-309
抄録: We may now complete this paper with a brief summary. 1. The movement of the ground is composed of four kinds of displacements ; namely the displacement due to the transmission of shallow water waves, that due to Bayleigh-waves, that due to distortional waves and that due to dilatational waves. 2. The velocity of the transmission of the displacement of the body due to shallow water waves is equal to that of shallow water waves, while the transmission of the displacements of other kinds have their own velocities peculiar to the respective waves. 3. The amplitudes of the deformation of the solid body due to Rayleigh-waves and also to shallow water waves change as inverse square root of the epicentral distance, while those due to the dilatational and distortional waves diminish as inverse square of the epicentral distance. 4. Microseisms due to a disturbed weather occurring in a different region are chiefly due to long water waves, including breakers at the coast, advancing near the observing station, but not the seismic waves directly transmitted from the region of the disturbed weather. The action of the long water waves is, however, relatively small compared with that of breakers. 5. The amplitude of the ground due to pulsatory original disturbance of long periods is smaller than that due to short periods, even though the amplitude of the disturbing pressure is kept constant.
URI: http://hdl.handle.net/2261/9996
ISSN: 00408972


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