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Remote triggering of seismicity at Japanese volcanoes following the 2016 M7.3 Kumamoto earthquake
http://hdl.handle.net/2241/00144454
http://hdl.handle.net/2241/001444548a30f573-2ddd-4fa0-9556-eb46e96d501a
名前 / ファイル | ライセンス | アクション |
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EPS_68-165 (4.3 MB)
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Item type | Journal Article(1) | |||||
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公開日 | 2016-11-30 | |||||
タイトル | ||||||
タイトル | Remote triggering of seismicity at Japanese volcanoes following the 2016 M7.3 Kumamoto earthquake | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Enescu, Bogdan
× Enescu, Bogdan× Shimojo, Kengo× Opris, Anca× Yagi, Yuji |
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著者別名 |
八木, 勇治
× 八木, 勇治 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The MJMA7.3 Kumamoto earthquake occurred on April 16, 2016, in the western part of Kyushu, at a depth of 12 km, on an active strike-slip fault. Here, we report on a relatively widespread activation of small remote earthquakes, which occurred as far as Hokkaido, detected by analyzing the continuous waveform data recorded at seismic stations all over Japan. Such relatively widespread remote seismicity activation, following a large inland earthquake, has not been reported before for Japan. Our analysis demonstrates that the remote events were triggered dynamically, by the passage of the surface waves from the Kumamoto earthquake. Most of the remotely triggered events in the Tohoku and Hokkaido regions, as well as close to Izu Peninsula, occur at or close to volcanoes, which suggests that the excitation of crustal fluids, by the passage of Rayleigh waves, played an important triggering role. Nevertheless, remote activation in other regions, like Noto Peninsula, occurred away from volcanoes. The relatively large-amplitude Love waves, enhanced by a source directivity effect during the Kumamoto earthquake, may have triggered seismicity on local active faults. The dynamic stresses in the areas where remote activation has been observed range from several kPa to tens of kPa, the thresholds being lower than in previous dynamic triggering cases for Japan; this might relate to a change in the crustal conditions following the 2011 M9.0 Tohoku-oki earthquake, in particular at volcanoes in NE Japan. | |||||
書誌情報 |
Earth, planets and space 巻 68, 号 1, p. 165, 発行日 2016-10 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1880-5981 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1186/s40623-016-0539-5 | |||||
権利 | ||||||
権利情報 | © The Author(s) 2016. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. | |||||
著者版フラグ | ||||||
値 | publisher | |||||
出版者 | ||||||
出版者 | Springer |