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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76号 >
2010年12月２日に札幌市直下で発生した石狩地方中部の地震（MJMA4.6）と札幌周辺の地震活動
| Title: | 2010年12月２日に札幌市直下で発生した石狩地方中部の地震（MJMA4.6）と札幌周辺の地震活動 |
| Other Titles: | Seismic Activity Associated with the 2010 M4.6 Sapporo Earthquake in central Ishikari region, Hokkaido |
| Authors: | 一柳, 昌義1 Browse this author | | 山口, 照寛2 Browse this author | | 高田, 真秀3 Browse this author | | 東, 龍介4 Browse this author | | 黒井, 和典5 Browse this author | | 山田, 卓司6 Browse this author | | 高橋, 浩晃7 Browse this author | | 前田, 宜浩8 Browse this author |
| Authors(alt): | Ichiyanagi, Masayoshi1 | | Yamaguchi, Teruhiro2 | | Takada, Masamitsu3 | | Azuma, Rysuke4 | | Kuroi, Kazunori5 | | Yamada, Takuji6 | | Takahashi, Hiroaki7 | | Maeda, Takehiro8 |
| Issue Date: | 19-Mar-2013 |
| 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: | 76 |
| Start Page: | 1 |
| End Page: | 13 |
| Abstract: | On December 2, 2010, MJMA4.6 shallow felt earthquake occurred beneath southeastern part of Sapporo city. Three temporal seismic stations were installed near epicentral area. Reliable hypocenter data estimated by double difference procedure with local seismic velocity structure indicated clear southeastern-dipping distribution. Fault plane from focal mechanism estimated from P-wave polarization well agreed with this hypocenter distribution. Geometry of hypocenter distribution was also well consistent with an anticline structure and possible buried active fault estimated for earthquake disaster damage assumption by local government. Recalculation of hypocenters of the 1985, 1990, and 2010 felt earthquakes under equal condition implied that epicentral locations of these three events were approximately same. These facts implied possible stress concentration in epicentral region. |
| Type: | bulletin (article) |
| URI: | http://hdl.handle.net/2115/52301 |
| Appears in Collections: | 北海道大学地球物理学研究報告 = Geophysical bulletin of Hokkaido University > 第76号
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