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Groundwater helium anomaly reflects strain change during the 2016 Kumamoto earthquake in Southwest Japan
http://hdl.handle.net/2261/61238
f0fc5f58-ac05-4bd7-a3b7-cb6cfba4c0aa
名前 / ファイル | ライセンス | アクション | |
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2016-12-05 | |||||
タイトル | ||||||
タイトル | Groundwater helium anomaly reflects strain change during the 2016 Kumamoto earthquake in Southwest Japan | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題 | Geochemistry | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | Hydrogeology | |||||
主題Scheme | Other | |||||
キーワード | ||||||
主題 | Seismology | |||||
主題Scheme | Other | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Sano, Yuji
× Sano, Yuji× Takahata, Naoto× Kagoshima, Takanori× Shibata, Tomo× Onoue, Tetsuji× Zhao, Dapeng |
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著者所属 | ||||||
著者所属 | Atmosphere and Ocean Research Institute, The University of Tokyo | |||||
著者所属 | ||||||
著者所属 | Institute for Geothermal Sciences, Kyoto University | |||||
著者所属 | ||||||
著者所属 | Department of Earth and Environmental Sciences, Kumamoto University | |||||
著者所属 | ||||||
著者所属 | Department of Geophysics, Tohoku University | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Geochemical monitoring of groundwater and soil gas emission pointed out precursor and/or coseismic anomalies of noble gases associated with earthquakes, but there was lack of plausible physico-chemical basis. A laboratory experiment of rock fracturing and noble gas emission was conducted, but there is no quantitative connection between the laboratory results and observation in field. We report here deep groundwater helium anomalies related to the 2016 Kumamoto earthquake, which is an inland crustal earthquake with a strike-slip fault and a shallow hypocenter (10 km depth) close to highly populated areas in Southwest Japan. The observed helium isotope changes, soon after the earthquake, are quantitatively coupled with volumetric strain changes estimated from a fault model, which can be explained by experimental studies of helium degassing during compressional loading of rock samples. Groundwater helium is considered as an effective strain gauge. This suggests the first quantitative linkage between geochemical and seismological observations and may open the possibility to develop a new monitoring system to detect a possible strain change prior to a hazardous earthquake in regions where conventional borehole strain meter is not available. | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | UTokyo Research掲載「地下水のヘリウム量は大地震の前触れを告げる指標になりうるか」 URI: http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/groundwater-helium-level-could-signal-potential-risk-of-earthquake.html | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | UTokyo Research "Groundwater helium level could signal potential risk of earthquake" URI: http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/groundwater-helium-level-could-signal-potential-risk-of-earthquake.html | |||||
書誌情報 |
Scientific Reports Online Edition 巻 6, p. 37939, 発行日 2016-11-29 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2045-2322 | |||||
DOI | ||||||
関連識別子 | ||||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1038/srep37939 | |||||
権利 | ||||||
権利情報 | Copyright © 2016, Rights Managed by Nature Publishing Group | |||||
著者版フラグ | ||||||
値 | publisher | |||||
出版者 | ||||||
出版者 | Nature Publishing Group | |||||
関係URI | ||||||
関連識別子 | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/groundwater-helium-level-could-signal-potential-risk-of-earthquake.html | |||||
関係URI | ||||||
関連識別子 | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/groundwater-helium-level-could-signal-potential-risk-of-earthquake.html | |||||
関係URI | ||||||
関連識別子 | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://dx.doi.org/10.1038/srep37939 |