中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 中国科学院地球与行星物理重点实验室
The Northwest Pacific subduction zone and its deep earthquake activity

文献类型：期刊论文

作者Chen QiFu3,4,5; Wang Xin4,5; Jiang JinZhong2; Li TianJue1
刊名CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
出版日期2021-12-01
卷号64期号:12页码:4394-4405
关键词Pacific subduction zone Slab interface Stress regime Mechanisms of deep earthquakes
ISSN号0001-5733
DOI10.6038/cjg2021P0038
英文摘要The subduction process drives the material cycling and energy exchange between Earth's surface and its deep interior, and thus the subduction zones are pivotal for understanding the evolution of continental lithosphere, the subduction-related earthquakes, volcanos, ore deposits, etc. This paper focuses on the Northwest Pacific subduction zone and summarizes our present understandings of the subducting slab from the Japan Trench to Northeast China based on multiple seismic investigations. Stress inversion shows that the principal compressive stress axis of the slab is subparallel to the subducting direction, indicating a close relationship for the shallow and deep strong earthquakes associated with the subducting slab. A metastable olivine wedge (MOW) does exist within the subducting slab at the mantle transition zone (MTZ) depth, with most deep earthquakes occurred within and in the vicinity of the MOW, favoring the dual mechanism hypothesis as the initiation mechanism of deep earthquakes. Seismic observations show the upper and lower boundaries of the subducting high-velocity slab at MTZ depths (410 to 660 km), suggesting a compositionally layered slab and high water contents beneath the slab. A better understanding of the slab structures and the dynamic processes of the Pacific subduction zone, which is a very rare region with intense deep seismicity beneath continents, requires the efforts of interdisciplinary teams to carry out joint sea-land geophysical investigations, high-pressure/high-temperature experiments, and geodynamic simulations for the Northwest Pacific subduction zone.
WOS关键词SEISMIC DISCONTINUITY ; BENEATH ; JAPAN ; MECHANISM ; FIELD ; TRANSPORTATION ; LITHOSPHERE ; INVERSION ; WEDGE ; KURIL
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000751863800013
出版者SCIENCE PRESS
源URL[http://ir.iggcas.ac.cn/handle/132A11/104941]  
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.Nanyang Technol Univ, Sch Phys & Math Sci, Singapore 637371, Singapore
2.Yunnan Earthquake Agcy, Kunming 650224, Yunnan, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Heilongjiang Mohe Observ Geophys, Beijing 100029, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Chen QiFu,Wang Xin,Jiang JinZhong,et al. The Northwest Pacific subduction zone and its deep earthquake activity[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2021,64(12):4394-4405.
APA Chen QiFu,Wang Xin,Jiang JinZhong,&Li TianJue.(2021).The Northwest Pacific subduction zone and its deep earthquake activity.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,64(12),4394-4405.
MLA Chen QiFu,et al."The Northwest Pacific subduction zone and its deep earthquake activity".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 64.12(2021):4394-4405.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。