|本期目录/Table of Contents|

[1]张红艳,谢富仁,崔效锋.四川芦山地震区域构造环境与构造应力场特征[J].地球科学与环境学报,2013,35(02):99-106.
 ZHANG Hong-yan,XIE Fu-ren,CUI Xiao-feng.Regional Characteristics of Tectonic Stress Field and Tectonic Setting of Lushan Earthquake in Sichuan[J].Journal of Earth Sciences and Environment,2013,35(02):99-106.
点击复制

四川芦山地震区域构造环境与构造应力场特征(PDF)
分享到:

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:
第35卷
期数:
2013年第02期
页码:
99-106
栏目:
应用地球物理
出版日期:
2013-06-15

文章信息/Info

Title:
Regional Characteristics of Tectonic Stress Field and Tectonic Setting of Lushan Earthquake in Sichuan
文章编号:
1672-6561(2013)02-0099-08
作者:
张红艳谢富仁崔效锋
中国地震局地壳应力研究所地壳动力学重点实验室
Author(s):
ZHANG Hong-yan XIE Fu-ren CUI Xiao-feng
Key Laboratory of Crustal Dynamics, Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China
关键词:
芦山地震龙门山断裂带震源机制解最大主应力构造应力场应力转向构造环境
Keywords:
Lushan earthquake Longmenshan fault zone focal mechanism solution maximum principal stress tectonic stress field stress transition tectonic setting
分类号:
P694;P315.2
DOI:
-
文献标志码:
A
摘要:
2013年4月20日四川省雅安市芦山县发生Ms7.0级地震,这是继汶川地震后发生在龙门山断裂带上的又一次强震。在介绍芦山地震的基本特征及发震构造环境基础上,利用区域内172个震源机制解资料对区域构造应力场进行了计算,特别对龙门山应力区内各类应力数据的最大主应力方向进行了分析。结果表明:龙门山应力区目前处于近东西向的挤压构造应力环境中;区域最大主应力方向在横向上从巴颜喀拉块体的北东—南西向到龙门山块体的近东西向,再到华南块体的北西西—南东东向,表现为顺时针方向的旋转;区域最大主应力在纵向上从柴达木—秦岭块体的北东东—南西西向到龙门山块体的近东西向,再到川滇块体的北西—南东向,亦表现为顺时针方向的旋转;应力方向在不同块体间的转变,反映了青藏高原东缘巴颜喀拉块体在进行南东向水平运动挤压龙门山地块时,由于受到华南地块特别是四川盆地的强烈阻挡,导致龙门山推覆构造带表现为明显的地壳缩短和山体隆升。
Abstract:
In April 20, 2013, a Ms7.0 earthquake hitted Lushan county of Ya’an city, Sichuan province, which was another strong earthquake on Longmenshan foreland thrust zone after Wenchuan earthquake. Basic characteristics and seismogenic tectonic setting of Lushan earthquake were introduced, and regional tectonic stress field was calculated by 172 focal mechanism solutions, especially the directions of maximum principal stress were analyzed based on five different kinds of stress data in Longmenshan stress region. The results indicate that the direction of maximum principal stress in Longmenshan stress region is nearly in EW-direction compressional tectonic setting at present; the direction of maximum principal stress is from NE-SW-direction in Bayan Har block to nearly EW-direction in Longmenshan block, and then to NWW-SEE-direction in South China block, showing clockwise rotation from west to east in spatial distribution; the direction of maximum principal stress is from NEE-SWW-direction in Qaidam-Qinling block to nearly EW-direction in Longmenshan block, and then to NW-SE-direction in Chuandian block, also showing clockwise rotation from south to north in spatial distribution. Transition of stress direction among different blocks indicates that Bayan Har block in the eastern margin of Qinghai-Tibet Plateau moves to the south-east and pushes the Longmenshan block because of the strong stop of Sichuan Basin in South China block, and results in obvious crustal shortening and mountain uplift of Longmenshan foreland thrust zone.

参考文献/References:

[1] 王卫民,郝金来,姚振兴.2013年4月20日四川芦山地震震源破裂过程反演初步结果[J].地球物理学报,2013,56(4):1412-1417.
[2] 张勇,许力生,陈运泰.芦山4·20地震破裂过程及其致灾特征初步分析[J].地球物理学报,2013,56(4):1408-1411.
[3] 邓起东,陈社发,赵小麟.龙门山及其邻区的构造和地震活动及动力学[J].地震地质,1994,16(4):389-403.
[4] 杨晓平,蒋溥,宋方敏,等.龙门山断裂带南段错断晚更新世以来地层的证据[J].地震地质,1999,21(4):341-345.
[5] 李勇,周荣军,DENSMORE A L,等.青藏高原东缘龙门山晚新生代走滑-逆冲作用的地貌标志[J].第四纪研究,2006,26(1):40-51.
[6] 陈国光,计凤桔,周荣军,等.龙门山断裂带晚第四纪活动性分段的初步研究[J].地震地质,2007,29(3):657-673.
[7] 贾秋鹏,贾东,朱艾斓,等.青藏高原东缘龙门山冲断带与四川盆地的现今构造表现:数字地形和地震活动证据[J].地质科学,2007,42(1):31-44.
[8] 徐锡伟,闻学泽,叶建青,等.汶川Ms8.0地震地表破裂带及其发震构造[J].地震地质,2008,30(3):597-629.
[9] 徐锡伟,陈桂华,于贵华,等.芦山地震发震构造及其与汶川地震关系讨论[J].地学前缘,2013,20(3):11-20.
[10] 谢富仁,陈群策,崔效锋,等.中国大陆地壳应力环境研究[M].北京:地质出版社,2003.
[11] 鄢家全,时振梁,环文林,等.强余震的断层面解特征[J].地震学报,1980,2(4):395-403.
[12] ZHOU H L,LIU H L,KANAMORI H.Source Processes of Large Earthquakes Along the Xianshuihe Fault in Southwestern China[J].Bulletin of the Seismological Society of America,1983,73(2):537-551.
[13] 许忠淮,汪素云,高阿甲,等.我国部分早期震源机制解答的重新测定[J].地震地磁观测与研究,1994,15(5):1-9.
[14] 阚荣举,张四昌,晏凤桐,等.我国西南地区现代构造应力场与现代构造活动特征的探讨[J].地球物理学报,1977,20(2):96-109.
[15] 阚荣举,王绍晋,黄崐,等.中国西南地区现代构造应力场与板内断块相对运动[J].地震地质,1983,5(2):79-90.
[16] 成尔林.四川及其邻区现代构造应力场和现代构造运动特征[J].地震学报,1981,3(3):231-241.
[17] 程万正,陈天长.1989年巴塘6.7级震群的复杂时-空扩展和震源力学机制[J].地震学报,1994,16(2):153-159.
[18] 程万正,李桂芳,乔惠珍,等.四川沐川5.7级震群子序列的震源参数变化[J].中国地震,2002,18(2):203-213.
[19] 程万正,陈天长,魏娅玲,等.2001年四川雅江6级地震的前震与余震震源参数的变化[J].地震学报,2003,25(4):351-360.
[20] AKI K.Earthquake Generating Stress in Japan for the Years 1961 to 1963 Obtained by Smoothing the First Motion Radiation Patterns[J].Bulletin of the Earthquake Research Institute,1966,44(2):447-471.
[21] ELLSWORTH W L,XU Z H .Determination of the Stress Tensor from Focal Mechanism Data[J].Eos,Transactions American Geophysical Union,1980,61(46):1117.
[22] MICHAEL A J.Use of Focal Mechanism to Determine Stress:A Control Study[J].Journal of Geophysical Research:Solid Earth,1987,92(B1):357-368.
[23] 许忠淮,阎明,赵仲和.由多个小地震推断的华北地区构造应力场的方向[J].地震学报,1983,5(3):268-279.
[24] 许向彤,许忠淮,张东宁.求震源机制P波初动解的格点尝试概率法[J].地震地磁观测与研究,1995,16(4):34-42.
[25] 范俊喜,马瑾,刁桂苓.由小震震源机制解得到的鄂尔多斯周边构造应力场[J].地震地质,2003,25(1):88-99.
[26] 刁桂苓,王海涛,高国英,等.伽师强震系列应力场的转向过程[J].地球物理学报,2005,48(5):1062-1068.
[27] 张红艳,谢富仁,崔效锋,等.张渤带陆地段现代构造应力场的非均匀特征[J].中国地震,2009,25(3):314-324.
[28] 谢富仁,崔效锋,赵建涛,等.中国大陆及邻区现代构造应力场分区[J].地球物理学报,2004,47(4):654-662.

相似文献/References:

[1]谢和平,邓建辉,李碧雄.四川芦山地震灾害调查与灾后重建的相关问题分析[J].地球科学与环境学报,2013,35(02):1.
 XIE He-ping,DENG Jian-hui,LI Bi-xiong.Investigation of Lushan Earthquake Disasters and Analysis of Related Problems During Post-quake Reconstruction in Sichuan[J].Journal of Earth Sciences and Environment,2013,35(02):1.
[2]王运生,全清,罗永红,等.四川芦山Ms7.0级地震的地质环境影响分析[J].地球科学与环境学报,2013,35(02):92.
 WANG Yun-sheng,QUAN Qing,LUO Yong-hong,et al.Geological Environmental Influence of Lushan Ms7.0 Earthquake in Sichuan[J].Journal of Earth Sciences and Environment,2013,35(02):92.
[3]熊林,何建坤,潘正洋,等.汶川地震和芦山地震对青藏高原东缘主要活动断层应力变化的影响[J].地球科学与环境学报,2014,36(03):113.
 XIONG Lin,HE Jian-kun,PAN Zheng-yang,et al.Effects of Wenchuan and Lushan Earthquakes on the Changes of Stress of Main Active Tectonics in the Eastern Edge of Qinghai-Tibet Plateau[J].Journal of Earth Sciences and Environment,2014,36(02):113.
[4]张贵钢,杨志强,王庆良,等.基于最小二乘配置模型探讨青藏高原巴彦喀拉块体的运动特征[J].地球科学与环境学报,2011,33(02):213.
 ZHANG Gui-gang,YANG Zhi-qiang,WANG Qing-liang,et al.Study on Movement Characteristic of Bayanhar Block in the Qinghai-Tibet Plateau Based on Least Squares Collocation Model[J].Journal of Earth Sciences and Environment,2011,33(02):213.
[5]张秀霞,张永志.遗传算法反演龙门山断裂带断层三维滑动参数研究[J].地球科学与环境学报,2011,33(02):217.
 ZHANG Xiu-xia,ZHANG Yong-zhi.Inversion of Three-dimensional Slip Parameters of Fault in Longmenshan Fault Zone Using Genetic Algorithm[J].Journal of Earth Sciences and Environment,2011,33(02):217.
[6]白贵霞,程传录,郭春喜,等.汶川地震地形形变监测与分析[J].地球科学与环境学报,2010,32(02):205.
 BAI Gui-xia,CHENG Chuan-lu,GUO Chun-xi,et al.Analysis and Monitoring of Crustal Deformation in Wenchuan Earthquake[J].Journal of Earth Sciences and Environment,2010,32(02):205.
[7]王伟锋,卿艳彬,朱传华,等.横断层作用下汶川地震与芦山地震发震机制新探[J].地球科学与环境学报,2014,36(03):102.
 WANG Wei-feng,QING Yan-bin,ZHU Chuan-hua,et al.New Viewpoints of the Seismogenic Mechanism of Wenchuan and Lushan Earthquakes Under the Action of Transverse Fault[J].Journal of Earth Sciences and Environment,2014,36(02):102.

备注/Memo

备注/Memo:
收稿日期:2013-06-03
基金项目:国家自然科学基金项目(40904024);中央级公益性科研院所基本科研业务专项项目(ZDJ2013-20);“十二五”国家科技支撑计划项目(2012BAK19B03-4);国土资源部深部探测技术与实验研究专项项目(SinoProbe-06-04)
作者简介:张红艳(1980-),女,江苏海门人,助理研究员,理学博士研究生,E-mail:zhy0720@126.com。
更新日期/Last Update: 2013-06-20