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Seismicity and crustal structure related to the Miyake-jima volcanic activity in 2000
https://nied-repo.bosai.go.jp/records/4465
https://nied-repo.bosai.go.jp/records/4465a28d5fe5-cf97-4c49-8192-a8e1c167286a
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 | Seismicity and crustal structure related to the Miyake-jima volcanic activity in 2000 | |||||||||||
著者 |
Nishizawa, A.
× Nishizawa, A.
× Ono, T.
× Otani, Y.
|
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抄録 | ||||||||||||
内容記述タイプ | Other | |||||||||||
内容記述 | © Copyright 2002 by the American Geophysical Union. The largest earthquake swarm ever recorded in Japan began off the islands of Miyake-jima, Kozu-shima and Nii-jima, and was linked to volcanic activity on Miyake-jima, at the northern end of the volcanic front of the Izu-Ogasawara (Bonin) arc. Ocean bottom seismographic observations made directly above the swarm region gave clear indication of a magmatic intrusion. The hypocenter distribution shows a vertical sheet, 2 km wide and at a depth of 12-20 km, that broadens markedly at depths up to 12 km. The P wavespeed structure obtained from a seismic refraction survey shows no significant difference in the characteristics of the shallow crust between the strong swarm region and inactive region. However, a low wavespeed region was detected 10-15 km northwest of Miyake-jima. | |||||||||||
言語 | en | |||||||||||
書誌情報 |
en : Geophysical Research Letters 巻 29, 号 19, p. 12-1 |
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ISSN | ||||||||||||
収録物識別子タイプ | EISSN | |||||||||||
収録物識別子 | 1944-8007 | |||||||||||
DOI | ||||||||||||
関連識別子 | 10.1029/2002GL015008 |