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  1. 防災科研関係論文

Japan unified high-resolution relocated catalog for earthquakes (JUICE): Crustal seismicity beneath the Japanese Islands

https://nied-repo.bosai.go.jp/records/4399
https://nied-repo.bosai.go.jp/records/4399
e0caf37e-2cc6-4142-a2c0-45ae1d5173b0
Item type researchmap(1)
公開日 2023-04-27
タイトル
言語 en
タイトル Japan unified high-resolution relocated catalog for earthquakes (JUICE): Crustal seismicity beneath the Japanese Islands
言語
言語 eng
著者 Tomoko E. Yano

× Tomoko E. Yano

en Tomoko E. Yano

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Tetsuya Takeda

× Tetsuya Takeda

en Tetsuya Takeda

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Makoto Matsubara

× Makoto Matsubara

en Makoto Matsubara

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Katsuhiko Shiomi

× Katsuhiko Shiomi

en Katsuhiko Shiomi

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抄録
内容記述タイプ Other
内容記述 We have generated a high-resolution catalog called the "Japan Unified high-resolution relocated Catalog for Earthquakes" (JUICE), which can be used to evaluate the geometry and seismogenic depth of active faults in Japan. We relocated >1.1 million hypocenters from the NIED Hi-net catalog for events which occurred between January 2001 and December 2012, to a depth of 40 km. We apply a relative hypocenter determination method to the data in each grid square, in which entire Japan is divided into 1257 grid squares to parallelize the relocation procedure. We used a double-difference method, incorporating cross-correlating differential times as well as catalog differential times. This allows us to resolve, in detail, a seismicity distribution for the entire Japanese Islands. We estimated location uncertainty by a statistical resampling method, using Jackknife samples, and show that the uncertainty can be within 037 km in the horizontal and 0.85 km in the vertical direction with a 90% confidence interval for areas with good station coverage. Our seismogenic depth estimate agrees with the lower limit of the hypocenter distribution for a recent earthquake on the Kamishiro fault (2014, Mj 6.7), which suggests that the new catalog should be useful for estimating the size of future earthquakes for inland active faults. (C) 2017 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license.
言語 en
書誌情報 en : TECTONOPHYSICS

巻 702, p. 19-28, 発行日 2017-04
出版者
言語 en
出版者 ELSEVIER SCIENCE BV
ISSN
収録物識別子タイプ EISSN
収録物識別子 1879-3266
DOI
関連識別子 10.1016/j.tecto.2017.02.017
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