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  1. 防災科研関係論文

Source duration of deep very low frequency earthquakes in western Shikoku, Japan

https://nied-repo.bosai.go.jp/records/2847
https://nied-repo.bosai.go.jp/records/2847
d0f18bc1-963d-401d-a3cc-97663433c4a3
Item type researchmap(1)
公開日 2023-03-30
タイトル
言語 en
タイトル Source duration of deep very low frequency earthquakes in western Shikoku, Japan
言語
言語 eng
著者 Takanori Matsuzawa

× Takanori Matsuzawa

en Takanori Matsuzawa

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Kazushige Obara

× Kazushige Obara

en Kazushige Obara

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Takuto Maeda

× Takuto Maeda

en Takuto Maeda

Search repository
抄録
内容記述タイプ Other
内容記述 The source durations of very low frequency earthquakes in western Shikoku, Japan were estimated. Nineteen very low frequency earthquakes were located in this region between 14 and 17 March 2007 that migrated southward with tremor activity. The source durations of four M-w 3.5-3.8 very low frequency earthquakes were estimated by comparing simulated and observed seismograms to be 12-18 s. The ratio of seismic moment and source duration is 1-5 x 10(13) Nm/s. This value is several to ten times larger than those in southern Kii, Japan. Such a ratio difference may reflect the nature of very low frequency earthquake between these regions. If a stress drop of 0.003-3 MPa is assumed, then the slip propagation velocity of very low frequency earthquakes ranges from several tens to several hundreds of m/s.
言語 en
書誌情報 en : JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH

巻 114, 発行日 2009-11
出版者
言語 en
出版者 AMER GEOPHYSICAL UNION
ISSN
収録物識別子タイプ EISSN
収録物識別子 2169-9356
DOI
関連識別子 10.1029/2008JB006044
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