Stress regime inversion in the northwest Pacific subduction zone, the segment from northern Honshu, Japan to northeast China
文献类型：期刊论文
| 作者 | Li TianJue1,2,3; Chen QiFu1,2,3 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2019-02-01 |
| 卷号 | 62期号:2页码:520-533 |
| 关键词 | Northwest Pacific subduction zone Focal mechanism Stress regime inversion |
| ISSN号 | 0001-5733 |
| DOI | 10.6038/cjg2019M0044 |
| 英文摘要 | The northwestern Pacific region is one of the most typical and concentrated subduction zone on the Earth, and it has been taken as a very important region for subduction zone study. The Benioff zone from northeastern Honshu, Japan to northeast China with abundant deep earthquakes provides a great opportunity for earth science study. Stress regime inversion in the subduction zone using focal mechanisms of earthquakes is an important field in the study of such area. This paper will adopt the Spatial and Temporal Stress Inversion program downloaded from USGS, which is compiled based on damped regional-scale stress inversion technique, to invert the spatial stress regimes in the full subduction zone (segments from its surface part to the deep end) by dividing all the Global CMT solutions of earthquakes between November 1976 and January 2017 into 10 schemes from a near east-west crossing profile. For the spatial stress regimes in the shallow part of the subduction zone, results of our inversion show that horizontal compression dominates on the landward side, while for the seaward side with predominant horizontal tension. Along the downward subducting slab, the principal stress rotates to be slab-parallel gradually. For the upper portion above the double seismic zone (depth of similar to 120 km) , the axis of the principal tension stress is parallel with the subducting slab while accompanied by a steeper dip. At the depth of similar to 120 km, the stress regime appears to be the typical I of double seismic zones (down-dip compression along the slab in the upper plane, and down-dip tension in the lower plane). For the deep portion of the slab, the stress regime turns to be down-dip compression gradually. For our study subduction zone, the compressional stress axes keep parallel to the subducting direction very well, suggesting significant action of slab pull and weak mantle support below. The tensional stress axes beneath the slab interface with depth range of intermediate-focus earthquakes tend to be parallel with the trench strike. It may be the subducting slab contortion below caused by the Kurile-Japan arc-arc junction that occurred in our study region. |
| WOS关键词 | WADATI-BENIOFF ZONE ; FOCAL-MECHANISM SOLUTIONS ; SEISMIC ZONE ; EARTHQUAKE ; FIELD ; TOHOKU ; ARC ; DEFORMATION ; LITHOSPHERE ; KURIL |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000457642800007 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/90558]  |
| 专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
| 通讯作者 | Chen QiFu |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li TianJue,Chen QiFu. Stress regime inversion in the northwest Pacific subduction zone, the segment from northern Honshu, Japan to northeast China[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2019,62(2):520-533. |
| APA | Li TianJue,&Chen QiFu.(2019).Stress regime inversion in the northwest Pacific subduction zone, the segment from northern Honshu, Japan to northeast China.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,62(2),520-533. |
| MLA | Li TianJue,et al."Stress regime inversion in the northwest Pacific subduction zone, the segment from northern Honshu, Japan to northeast China".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 62.2(2019):520-533. |
入库方式： OAI收割
来源：地质与地球物理研究所
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