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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
北海道大学地球物理学研究報告 = Geophysical bulletin of Hokkaido University >
第81号 >
2014年7月8日に発生した北海道白老町付近（胆振地方中東部）の地震（MJMA 5.6）について
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| Title: | 2014年7月8日に発生した北海道白老町付近（胆振地方中東部）の地震（MJMA 5.6）について |
| Other Titles: | Seismic activity associated with the 2014 Shiraoi earthquake (MJMA 5.6) in middle east Iburi region, Hokkaido |
| Authors: | 一柳, 昌義1 Browse this author | | シェスタコフ, ニコライ2 Browse this author | | 奥山, 哲3 Browse this author | | 大園, 真子4 Browse this author | | 笠原, 稔5 Browse this author | | 高橋, 浩晃6 Browse this author |
| Authors(alt): | ICHIYANAGI, Masayoshi1 | | SHESTAKOV, Nikolay V.2 | | OKUYAMA, Satoshi3 | | OHZONO, Mako4 | | KASAHARA, Minoru5 | | TAKAHASHI, Hiroaki6 |
| Issue Date: | 19-Mar-2018 |
| Publisher: | 北海道大学大学院理学研究院 |
| Journal Title: | 北海道大学地球物理学研究報告 |
| Journal Title(alt): | Geophysical bulletin of Hokkaido University |
| Volume: | 81 |
| Start Page: | 17 |
| End Page: | 26 |
| Abstract: | A M5.6 shallow earthquake occurred on 8 July 2014 in middle east Iburi region, southwestern Hokkaido. Maximum seismic intensity of 5- was observed at Shiraoi town. Three temporal seismic stations had been installed in the focal region from 9 July 2014 to 30 April 2015. We determined 384 aftershock hypocenters by the double-difference tomographic hypocenter determination with proper seismic velocity structure. Relocated aftershocks were clearly distributed on a southeastern ward dipping plane with 5～10 km depth. This configuration agreed with a nodal plane of mainshock focal mechanism. Aftershocks occurred in surrounding part of a low seismicity patch. Mainshock was located deepest part of aftershock zone. These facts suggested that mainshock rupture propagated from deep to shallow, and a low seismicity patch was mainshock slip area. No clear correlation between this earthquake sequence and nearest active Tarumae volcano activity were identified. |
| Rights: | http://creativecommons.org/licenses/by-nc/4.0/ |
| Type: | bulletin (article) |
| URI: | http://hdl.handle.net/2115/68475 |
| Appears in Collections: | 北海道大学地球物理学研究報告 = Geophysical bulletin of Hokkaido University > 第81号
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