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Seismic refraction experiment at the amami plateau
https://nied-repo.bosai.go.jp/records/5821
https://nied-repo.bosai.go.jp/records/582117745ac4-df2e-408b-be2d-e022a4d2de9c
Item type | researchmap(1) | |||||||||||
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公開日 | 2023-03-30 | |||||||||||
タイトル | ||||||||||||
言語 | en | |||||||||||
タイトル | Seismic refraction experiment at the amami plateau | |||||||||||
言語 | ||||||||||||
言語 | eng | |||||||||||
著者 |
Azusa Nishizawa
× Azusa Nishizawa
× Kiyoshi Suyehiro
× Hiroshi Shimizu
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抄録 | ||||||||||||
内容記述タイプ | Other | |||||||||||
内容記述 | Seismic refraction profiles were shot at the Amami Plateau, an anomalous bathymetric high among many in the West Philippine Basin. A model of the crustal structure beneath the Amami Plateau consisting of materials with compressional wavespeeds 2.0, 2.8-3.8, 5.4-5.6, and 6.7 km/sec, with thicknesses 0.3-0.7, 1.0-2.0, and 3.0-4.0 km, layered from the top, was obtained. This indicates that the 5.4-5.6 km/sec layer characterizes the structure of the plateau and implies that a wavespeed of less than 5.6 km/sec occupies more than half the crust. It is suggested, therefore, that the crustal structure is different from that of normal oceanic. The sedimentary shear wavespeed was found to be 0.39 km/sec and Poisson's ratio 0.48 from P-PS delay time produced by phase conversion at the base of the sediment. c 1983, The Seismological Society of Japan, The Volcanological Society of Japan, The Geodetic Society of Japan. All rights reserved. | |||||||||||
言語 | en | |||||||||||
書誌情報 |
en : Journal of Physics of the Earth 巻 31, 号 3, p. 159-171, 発行日 1983 |
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ISSN | ||||||||||||
収録物識別子タイプ | ISSN | |||||||||||
収録物識別子 | 0022-3743 | |||||||||||
DOI | ||||||||||||
関連識別子 | 10.4294/jpe1952.31.159 |