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  1. 防災科研関係論文

S-wave energy estimation of small-earthquakes in the western Nagano region, Japan

https://nied-repo.bosai.go.jp/records/4468
https://nied-repo.bosai.go.jp/records/4468
7f5442cf-f1c9-4b58-8f9e-ccb64447c4b5
Item type researchmap(1)
公開日 2023-03-30
タイトル
言語 en
タイトル S-wave energy estimation of small-earthquakes in the western Nagano region, Japan
言語
言語 eng
著者 T Matsuzawa

× T Matsuzawa

en T Matsuzawa

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M Takeo

× M Takeo

en M Takeo

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S Ide

× S Ide

en S Ide

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Y Iio

× Y Iio

en Y Iio

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H Ito

× H Ito

en H Ito

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K Imanishi

× K Imanishi

en K Imanishi

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S Horiuchi

× S Horiuchi

en S Horiuchi

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抄録
内容記述タイプ Other
内容記述 We estimate the S-wave energy radiated by nine small earthquakes (M-W 1.2 - 2.4) that occurred in the western Nagano region, Japan. First, we obtain the S-wave energy radiated by 156 earthquakes (M-W 0.8 - 2.6) below 60 Hz in the frequency domain. We separate the radiated energy spectra and the site amplification functions using a least squares inversion method including corrections for the S-wave radiation pattern at the source and the attenuation along the path. Then, we assume an omega(2)-model to determine the corner frequencies for the nine earthquakes by using an empirical Green's function (EGF) method to remove the site and attenuation effects. Using the obtained corner frequencies, we then calculate radiated energy using these source models above 60 Hz. Our result indicates that the ratio of the seismic moment and S-wave energy is between 8 x 10(-6) and 7 x 10(-5).
言語 en
書誌情報 en : GEOPHYSICAL RESEARCH LETTERS

巻 31, 号 3
出版者
言語 en
出版者 AMER GEOPHYSICAL UNION
ISSN
収録物識別子タイプ ISSN
収録物識別子 0094-8276
DOI
関連識別子 10.1029/2003GL018445
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