The 2007 Niigata earthquake: Effect of arc magma and fluids
文献类型：期刊论文
| 作者 | Xia, SH ; Zhao, DP ; Qiu, XL |
| 刊名 | PHYSICS OF THE EARTH AND PLANETARY INTERIORS
 |
| 出版日期 | 2008 |
| 卷号 | 166期号:40606页码:153-166 |
| 关键词 | the 2004 and 2007 Niigata earthquakes seismic tomography slab dehydration the Amur plate magma and fluids |
| ISSN号 | 0031-9201 |
| 通讯作者 | shxia1982@yahoo.com ; zhao@aob.geophys.tohoku.ac.jp |
| 中文摘要 | To clarify the generation mechanism of large crustal earthquakes in the Amur-Okhotsk plate boundary, we determined high-resolution 3D seismic velocity (V-p, V-s) and Poisson's ratio structures in Niigata, Northeast Japan using a large number of P- and S-wave arrival times from the aftershocks of the 2004 and 2007 Niigata earthquakes as well as many intermediate-depth earthquakes in this area. Our results show that the Niigata mainshocks occurred around zones of low-velocity and high-Poisson's ratio, which suggest that fluids may have influenced the nucleation and rupture processes of the 2004 and 2007 Niigata earthquakes. A zone with pronounced low-velocity and high Poisson's ratio is revealed under the source areas of the 2004 and 2007 Niigata earthquakes in the lower crust and uppermost mantle, which may reflect the arc magma and fluids ascending from the upper-mantle wedge. These results indicate that the generation of the 2004 and 2007 Niigata earthquakes was affected by the ascending magma and fluids released by the dehydration process of the subducting Pacific slab. (C) 2008 Elsevier B.V. All rights reserved. |
| 学科主题 | Geochemistry & Geophysics |
| 收录类别 | SCI |
| 原文出处 | FEB |
| WOS记录号 | WOS:000255474800004 |
| 公开日期 | 2011-07-03 |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/4556]  |
| 专题 | 南海海洋研究所_中科院边缘海地质重点实验室 |
| 推荐引用方式 GB/T 7714 | Xia, SH,Zhao, DP,Qiu, XL. The 2007 Niigata earthquake: Effect of arc magma and fluids[J]. PHYSICS OF THE EARTH AND PLANETARY INTERIORS,2008,166(40606):153-166. |
| APA | Xia, SH,Zhao, DP,&Qiu, XL.(2008).The 2007 Niigata earthquake: Effect of arc magma and fluids.PHYSICS OF THE EARTH AND PLANETARY INTERIORS,166(40606),153-166. |
| MLA | Xia, SH,et al."The 2007 Niigata earthquake: Effect of arc magma and fluids".PHYSICS OF THE EARTH AND PLANETARY INTERIORS 166.40606(2008):153-166. |
入库方式： OAI收割
来源：南海海洋研究所
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