Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Chinese Journal of Geophysics》 2017-06
Add to Favorite Get Latest Update

Crustal structure imaging of multi-geophysical parameters and generating mechanisms of large earthquakes in North-South Seismic Zone

HU Ya-Ping;WANG Zhi;LIU Guan-Nan;LIU Cun-Xi;FU Yi;Key Laboratory of Earth Exploration and Information Techniques of Ministry of Education,Chengdu University of Technology;Key Laboratory of Ocean Marginal Sea Geology,South China Sea Institute of Oceanology,Chinese Academy of Sciences;Yalong River Hydropower Development Company,Ltd.;  
Crustal structures of multi-geophysical parameters are imaged with high resolution in the North-South Seismic Zone(NSSZ) by inverting a combined dataset of a large number of arrival-time data of P-and S-waves. Based on the high-resolution seismic images we focus on discussing generation mechanism of the large crustal earthquake(M7. 0) along the NSSZ. Our study revealed that the 1976 Songpan-Pingwu earthquake(M7. 2), 2008 Wenchuan earthquake(M8. 0) and 2013 Lushan earthquake(M7. 0) occurred in the high velocity areas with low Poisson's ratio anomalies. We consider that there could be a close relation between the generation of these three large earthquakes and the crustal deformation caused by intrusive fluids. On the contrary,the 1955 Luhuo earthquake(M7. 4) and the 1973 Kangding earthquake(M7. 1) occurred in Xianshuihe fault zone and their hypocenters were located in the low-velocity areas with high Poisson's ratio anomalies. This might be interpreted as upwelling fluids from the lower crustal channel flow. The surrounding areas of these earthquake hypocenters show strong variations of anomalous high-velocity and high Poisson's ratio,high-velocity and low Poisson's ratio anomalies,and low-velocity and low Poisson's ratio perturbations. These anomalies could be possibly and respectively corresponding to fluid-filled cracked rock, old and steady craton and growing metamorphous rocks along their corresponding faults. The intrusive fluids could initiate large crustal earthquakes by both changing the stress condition on the fault plane and weakening the mechanical strength of the rock matrix. The 1970 Tonghai earthquake(M7. 1) in Yunnan occurred on the Qujiang fault near Ailaoshan-Honghe fault zone. The hypocenter of this earthquake is located in a distinctive boundary where the seismic velocity changes dramatically from low to high whilst the Poisson' s ratio varies from high to low across the suture zone. We considered that the crustal strain energy accumulation after fluid extrusion from the lower crust led to the brittle fracture of the source rock hence the Tonghai earthquake. Therefore, we conclude that the strong crustal deformation and intrusive fluids from lower crust could have played major roles in active seismicity and generation of large crustal earthquakes in the NSSZ.
【Fund】: 国家自然科学基金(41372229 41572201);; 中国科学院百人计划(17314059);; 地质灾害防治与地质环境国家重点实验室开放基金(SKLGP2016K016)资助
【CateGory Index】: P315.2
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
【Citations】
Chinese Journal Full-text Database 10 Hits
1 ZHENG Chen;DING Zhi-Feng;SONG Xiao-Dong;Institute of Geophysics,China Earthquake Administration;Department of Geology,University of Illinois at Urbana-Champaign;Key Laboratory of Seismic Observation and Geophysical Imaging,China Earthquake Administration;School of Geodesy and Geomatics,Wuhan University;;Joint inversion of surface wave dispersion and receiver functions for crustal and uppermost mantle structure in Southeast Tibetan Plateau[J];地球物理学报;2016-09
2 LI Zhong-dong;GAO Zhu-jun;Geophysical Exploration Team,SBGEEMR;;Characteristics and distribution of Earthquake Relics at Luhuo and Their Scientific Value[J];四川地质学报;2016-02
3 XU Xiao-Ming;DING Zhi-Feng;YE Qing-Dong;L Miao-Miao;Institute of Geophysics,China Earhtquake Administration;Key Laboratory of Seismic Observation and Geophysical Imaging,Institute of Geophysics,China Earhtquake Administration;First Crust Monitoring and Application Center of China Earthquake Administration;;The crustal and upper mantle structure beneath the South-North seismic zone from the inversion of Love wave phase velocity[J];地球物理学报;2015-11
4 WANG Chun-Yong;YANG Wen-Cai;WU Jian-Ping;DING Zhi-Feng;Key Lab of Seismic Observation and Geophysical Imagin,Institute of Geophysics;State Key Lab of Continental Tectonics and Dynamics,Institute of Geology,CAGS;;Study on the lithospheric structure and earthquakes in North-South Tectonic Belt[J];地球物理学报;2015-11
5 XU Xiao-Ming;DING Zhi-Feng;ZHANG Feng-Xue;Institute of Geophysics,China Earthquake Administration;Key Laboratory of Seismic Observation and Geophysical Imaging,Institute of Geophysics,China Earthquake Administration;;The teleseismic tomography study by P-wave traveltime data beneath the southern South-north Seismic Zone[J];地球物理学报;2015-11
6 WANG Qiong;GAO Yuan;SHI Yu-Tao;Institute of Earthquake Science,China Earthquake Administration;Institute of Geophysics,China Earthquake Administration;;Rayleigh wave azimuthal anisotropy on the southeastern front of the Tibetan Plateau from seismic ambient noise[J];地球物理学报;2015-11
7 TAI Ling-Xue;GAO Yuan;LIU Geng;XIAO Zhuo;Institute of Earthquake Science,China Earthquake Administration;;Crustal seismic anisotropy in the southeastern margin of Tibetan Plateau by ChinArray data:shear-wave splitting from temporary observations of the first phase[J];地球物理学报;2015-11
8 JIANG Wei-Wei;JIANG Di-Di;XU Yi;HAO Tian-Yao;HU Wei-Jian;YU Jing-Feng;Institute of Geology and Geophysics,Chinese Academy of Sciences ,Key Laboratory of Petroleum Resources Research, Chinese Academy of Sciences;University of Chinese Academy of Sciences;;Features of crust and lithosphere velocity structures along the north-south tectonic belt and adjacent regions in China[J];地球物理学报;2014-12
9 WANG Qiong;GAO Yuan;Institute of Earthquake Science,China Earthquake Administration;Institute of Geophysics,China Earthquake Administration;;Rayleigh wave phase velocity tomography and strong earthquake activity on the southeastern front of the Tibetan Plateau[J];Science China(Earth Sciences);2014-10
10 GAO Yuan;WANG Qiong;ZHAO Bo;SHI YuTao;Institute of Earthquake Science, China Earthquake Administration;Institute of Geophysics, China Earthquake Administration;China Earthquake Networks Center, China Earthquake Administration;;A rupture blank zone in middle south part of Longmenshan Faults: Effect after Lushan M_s7.0 earthquake of 20 April 2013 in Sichuan, China[J];Science China(Earth Sciences);2014-09
【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 ZHU Tao;Institute of Geophysics,China Earthquake Administration;Key Laboratory of Seismic Observation and Geophysical Imaging,Institute of Geophysics,China Earthquake Administration;State Key Laboratory of Earthquake Dynamics,Institute of Geology,China Earthquake Administration;;The depth of shear wave splitting anisotropy in the Yunnan region inferred from mantle convection simulation[J];地球物理学报;2018-03
2 CHEN Jiang;WANG Su;TAI Shu-gang;HU Yi-li;Kunming Southern Geophysical Technology Development,Inc.;Department of Geophysics,Yunnan University;;Isolating the high signal-noise ratio S-wave from teleseismic P-wave coda[J];云南大学学报(自然科学版);2018-02
3 BAI YiMing;AI YinShuang;JIANG MingMing;HE YuMei;CHEN QiFu;Key Laboratory of Earth and Planetary Physics,Institute of Geology and Geophysics, Chinese Academy of Sciences;College of Earth Science,University of Chinese Academy of Sciences;CAS Center for Excellence in Tibetan Plateau Earth Sciences;;Structure of the mantle transition zone beneath the southeastern Tibetan plateau revealed by P-wave receiver functions[J];地球物理学报;2018-02
4 HUANG Hao;LIN Feng-xian;LI Jian-you;Qianlin Comprehensive Seismic Station,Earthquake Administration of Shannxi Province;Kunming Southern Geophysical Technology Development,Inc.;;Calculation of the teleseismic relative residuals arrival times and preliminary discussion of the deep structure under Shanxi area[J];云南大学学报(自然科学版);2017-S2
5 HAN Ming;XU Xiao-ya;LI Jian-you;HU Jia-fu;Kunming Southern Geophysical Technology Development,Inc;Department of Geophysics,Yunnan University;;Contrasting the lithospheric structure beneath Yunnan region revealed by P and S receiver functions[J];地球物理学进展;2017-06
6 HAN Ming;LI Jian-You;XU Xiao-Ya;HU Jia-Fu;Department of Geophysics,Yunnan University;Kunming Southern Geophysical Technology Development,Inc.;;Analysis for crustal anisotropy beneath the southeastern margin of Tibet by stacking azimuthal receiver functions[J];地球物理学报;2017-12
7 L Zuo-Yong;QIU Xue-Lin;MA Xiao-Jing;FANG Li-Hua;CAS Key Laboratory of Ocean and Marginal Sea Geology,South China Sea Institute of Oceanology,Chinese Academy of Sciences;Key Laboratory of Earthquake Monitoring and Disaster Mitigation Technology,China Earthquake Administration,Guangdong Earthquake Agency;University of Chinese Academy of Sciences;Institute of Geophysics,China Earthquake Administration;;Teleseismic P-wave traveltime tomography for the Leiqiong volcano and Cathaysia block[J];地球物理学报;2017-12
8 ZHANG Jiazheng;ZHOU Jianping;ZHAO Minghui;QIU Xuelin;CAS Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology;Second Institute of Oceanography State Oceanic Administration, People's Republic of China;;Progress and prospect of anisotropic study of hydrothermal field(49°39′E) on the Southwest Indian Ridge[J];热带海洋学报;2017-06
9 WANG Shuai-jun;LIU Bao-jin;JIA Shi-xu;DENG Xiao-guo;SONG Xiang-hui;LI Yi-qing;Geophysical Exploration Center of China Earthquake Administration;;Study on S-wave velocity structure difference of Yinchuan basin and blocks on both sides using artificial seismic sounding profiles[J];地球物理学进展;2017-05
10 YI Gui-xi;LONG Feng;LIANG Ming-jian;ZHANG Zhi-wei;ZHAO Min;QI Yu-ping;GONG Yue;QIAO Hui-zhen;WANG Zhi;WANG Si-wei;SHUAI Li-rong;Earthquake Administration of Sichuan Province;Sichuan Seistech Corporation Ltd.;;SEISMOGENIC STRUCTURE OF THE M4.9 AND M5.1 LITANG EARTHQUAKES ON 23 SEPTEMBER 2016 IN SOUTHWESTERN CHINA[J];地震地质;2017-05
【Secondary Citations】
Chinese Journal Full-text Database 10 Hits
1 YANG Wen-Cai;HOU Zun-Ze;YU Chang-Qing;State Key Lab of Continental Tectonics and Dynamics,Institute of Geology,CAGS;;3Dcrustal density structure of West Yunnan and its tectonic implications[J];地球物理学报;2015-11
2 XU Xiao-Ming;DING Zhi-Feng;YE Qing-Dong;L Miao-Miao;Institute of Geophysics,China Earhtquake Administration;Key Laboratory of Seismic Observation and Geophysical Imaging,Institute of Geophysics,China Earhtquake Administration;First Crust Monitoring and Application Center of China Earthquake Administration;;The crustal and upper mantle structure beneath the South-North seismic zone from the inversion of Love wave phase velocity[J];地球物理学报;2015-11
3 CHENG Yuan-Zhi;TANG Ji;CHEN Xiao-Bin;DONG Ze-Yi;XIAO Qi-Bin;WANG Li-Bo;State Key Laboratory of Earthquake Dynamics,Institute of Geology,China Earthquake Administration;Jiangxi Earthquake Administration;;Electrical structure and seismogenic environment along the border region of Yunnan,Sichuan and Guizhou in the south of the North-South seismic belt[J];地球物理学报;2015-11
4 PAN Jia-Tie;LI Yong-Hua;WU Qing-Ju;DING Zhi-Feng;Institute of Geophysics,China Earthquake Administration;Key Laboratory of Seismic Observation and Geophysical Imaging,Institute of Geophysics,China Earthquake Administration;;Phase velocity maps of Rayleigh waves in the southeast Tibetan plateau[J];地球物理学报;2015-11
5 CHEN Shi;ZHENG Qiu-Yue;XU Wei-Min;Institute of Geophysics,China Earthquake Administration;;Joint optimal inversion of gravity and seismic data to estimate crustal thickness of the southern section of the north-south seismic belt[J];地球物理学报;2015-11
6 ZHAO Pan-Pan;CHEN Jiu-Hui;LIU Qi-Yuan;GUO Biao;LI Shun-Cheng;LI Yu;State Key Laboratory of Earthquake Dynamics,Institute of Geology,China Earthquake Administration;;Fine structure of middle and upper crust of the Longmenshan Fault zone from short period seismic ambient noise[J];地球物理学报;2015-11
7 WANG Xing-Chen;DING Zhi-Feng;WU Yan;ZHU Lu-Pei;Institute of Geophysics,China Earthquake Administration;Department of Earth and Atmos.Sciences,Saint Louis Univ.;;The crustal structure and seismogenic environment in the Ludian M_S6.5 earthquake region[J];地球物理学报;2015-11
8 XU Xiao-Ming;DING Zhi-Feng;ZHANG Feng-Xue;Institute of Geophysics,China Earthquake Administration;Key Laboratory of Seismic Observation and Geophysical Imaging,Institute of Geophysics,China Earthquake Administration;;The teleseismic tomography study by P-wave traveltime data beneath the southern South-north Seismic Zone[J];地球物理学报;2015-11
9 CHANG Li-Jun;DING Zhi-Feng;WANG Chun-Yong;Institute of Geophysics,China Earthquake Administration;;Upper mantle anisotropy beneath the southern segment of North-South tectonic belt,China[J];地球物理学报;2015-11
10 LIU Sha;WU Peng;Institute of Geophysics,China Earthquake Administration;Earthquake Administration of Sichuan Province;;The effect of water level changes in Zipingpu reservoir on the parameters of shear wave splitting[J];地球物理学报;2015-11
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved