基于震源机制解资料的辽宁地区现今构造应力场

doi:10.12196/j.issn.1000-3274.2020.03.009

摘要/Abstract

摘要： 近年来, 辽宁测震台网不断完善, 为通过地震震源机制求解构造应力场提供了比以往更加良好的数据基础。收集并筛选出Global CMT和国内学者文章中1976—2015年、共228份震源机制资料, 根据震级大小的不同, 对数据赋予相应权重, 使用全局网格搜索算法, 反演辽宁地区现今构造应力场并给出其不确定范围。研究结果表明: 辽宁地区主压应力轴为NEE向, 主张应力轴以NNW向为主, 在辽西隆起区为近南北向展布; 近于1的应力形因子反映出由于西太平洋板块对亚欧板块的NWW向俯冲, 导致上地幔软流圈上隆, 使辽宁地区整体上处于拉张的应力状态。研究结果及所揭示的构造特征, 可对后续研究辽宁地区的地震孕育机制和动力学过程提供参考。

关键词: 构造应力场, 震源机制, 网格搜索法, 应力形因子, 辽宁地区

Abstract: The Liaoning Seismic Network has been continuously improved in recent years, which provides a better data basis for solving tectonic stress fields through earthquake focal mechanisms than before. We selected a total of 228 focal mechanisms from Global CMT and domestic publications from 1976 to 2015, weighted the data according to the magnitude of the earthquake, inversed the present tectonic stress field in Liaoning and gave its uncertainty range by the global grid search method. The results show that the principal compressive stress axis of the entire Liaoning region is in NEE direction, and the tensile stress axis is mainly NNW direction, and it is nearly north-south direction in the Western Liaoning uplifts. The stress shape ratio close to 1 reflects that due to the northwest-west subduction of the Eurasian plate by the western Pacific plate, the upper mantle asthenosphere is uplifted, and the Liaoning region is in a state of tension. The results of this study and the tectonic features revealed can provide some reference for the further research on the earthquake preparation mechanism and geodynamic process in Liaoning.

Key words: Tectonic stress field, Focal mechanism, Grid search method, Stress shape ratio, Liaoning region

中图分类号:

P315.7

戴盈磊, 万永革, 梁永朵, 张文静, 惠杨. 基于震源机制解资料的辽宁地区现今构造应力场[J]. 地震, 2020, 40(3): 112-130.

DAI Ying-lei, WAN Yong-ge, LIANG Yong-duo, ZHANG Wen-jing, HUI Yang. Present Tectonic Stress Field in Liaoning Area Based on Earthquake Focal Mechanisms[J]. EARTHQUAKE, 2020, 40(3): 112-130.

参考文献

[1] Zoback M L. First-and second-order patterns of stress in the lithosphere: The World Stress Map Project[J]. Journal of Geophysical Research: Solid Earth, 1992, 97(B8): 11703-11728.
[2] 许忠淮, 汪素云, 黄雨蕊, 等. 由大量的地震资料推断的我国大陆构造应力场[J]. 地球物理学报, 1989, 32(6): 636-647.
XU Zhong-huai, WANG Su-yun, Huang Yu-rui, et al. The tectonic stress field of Chinese continent deduced from a great number of earthquakes[J]. Chinese Journal of Geophysics, 1989, 32(6): 636-647 (in Chinese).
[3] 杜兴信, 邵辉成. 由震源机制解反演中国大陆现代构造应力场[J]. 地震学报, 1999, (4): 354-360.
DU Xing-xin, SHAO Hui-cheng. Modern tectonic stress field in the Chinese mainland inverted form focal mechanism solutions[J]. Acta Seismologica Sinica, 1999, (4): 354-360 (in Chinese).
[4] 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.
XIE Fu-ren, CHEN Qun-ce, CUI Xiao-feng, et al. Research on crustal stress state in China and adjacent area[M]. Beijing: Geological Publish House, 2003 (in Chinese).
[5] Wan Y. Contemporary tectonic stress field in China[J]. Earthquake Science, 2010, 23(4): 377-386.
[6] 范桃园, 龙长兴, 杨振宇, 等. 中国大陆现今地应力场黏弹性球壳数值模拟综合研究[J]. 地球物理学报, 2012, 55(4): 1249-1260.
FAN Tao-yuan, LONG Chang-xing, YANG Zhen-yu, et al. Comprehensive modeling on the present crustal stress of China mainland with the viscoelastic spherical shell[J]. Chinese Journal of Geophysics, 2012, 55(4): 1249-1260 (in Chinese).
[7] 张先泽, 欧阳杰. 辽宁地区现今构造应力场特征[J]. 辽宁地质, 1997, (4): 276-281.
ZHANG Xian-ze, OU Yang-jie. The characteristic of the existing structure stress field in Liaoning region[J]. Liaoning Geology, 1997, (4): 276-281 (in Chinese).
[8] 李平, 卢良玉, 卢造勋, 等. 辽宁及邻区地壳构造应力场及其与地震活动关系的三维有限元数值模拟研究[J]. 地震学报, 2001, 23(1): 24-35.
LI Ping, LU Liang-yu, LU Zao-xun, et al. A 3d finite element simulation research on the relationship between crustal stress and earthquake activity in Liaoning and its vicinity[J]. Acta Seismologica Sinica, 2001, 23(1): 24-35 (in Chinese).
[9] 张萍, 蒋秀琴. 辽宁地区震源机制解及应力场特征的研究[J]. 东北地震研究, 2000, 16(1): 1-7.
ZHANG Ping, JIANG Xiu-qin. Study of focal mechanism solutions and stress field characteristics in Liaoning region[J]. Seismological Research of Northeast China, 2000, 16 (1): 1-7 (in Chinese).
[10] 张萍, 谷光峪, 高艳玲. 岫岩—海城M_S5.4地震序列震源机制解[J]. 地震, 2001, 21(1): 98-102.
ZHANG Ping, GU Guang-yu, GAO Yan-ling. Focal mechanism of Xiuyan-Haicheng (M_S5.4) earthquake sequence[J]. Earthquake, 2001, 21(1): 98-102 (in Chinese).
[11] 张萍, 于龙伟, 李涯, 等. 岫岩—海城5.4级地震前小震震源机制解与记录特征分析[J]. 地震地磁观测与研究, 2003, 24(1): 29-38.
ZHANG Ping, YU Long-wei, LI Ya, et al. An analysis on the focal mechanism solutions of small earthquakes and the record characteristics before the Xiuyan-Haicheng earthquake of 5.4[J]. Seismological and Geomagnetic Observation and Research, 2003, 24(1): 29-38 (in Chinese).
[12] 张萍, 李爱民, 赵春平. 沈阳及其附近地区小震复合震源机制解[J]. 地震地磁观测与研究, 2004, 25(5): 35-39.
ZHANG Ping, LI Ai-min, ZHAO Chun-ping. The focal mechanism solutions of small earthquakes in Shenyang region and its surroundings[J]. Seismological and Geomagnetic Observation and Research, 2004, 25(5): 35-39 (in Chinese).
[13] Gephart J W, Forsyth D W. An improved method for determining the regional stress tensor using earthquake focal mechanism data: application to the San Fernando earthquake sequence[J]. Journal of Geophysical Research: Solid Earth, 1984, 89(B11): 9305-9320.
[14] Michael A J. Use of focal mechanisms to determine stress: a control study[J]. Journal of Geophysical Research: Solid Earth, 1987, 92(B1): 357-368.
[15] 许忠淮. 用滑动方向拟合法反演唐山余震区的平均应力场[J]. 地震学报, 1985, 7(4): 349-362.
XU Zhong-huai. Mean stress field in Tangshan aftershock area obtained from focal mechanism data by fitting slip directions[J]. Acta Seismologica Sinica, 1985, 7(4): 349-362 (in Chinese).
[16] 万永革. 根据震源机制求解构造应力场的网格搜索法[J]. 国际地震动态, 2012, (6): 19.
WAN Yong-ge. The grid search algorithm of tectonic stress tensor based on focal mechanism data[J]. Recent Developments in World Seismology, 2012, (6): 19 (in Chinese).
[17] 许忠淮, 戈澍谟. 用滑动方向拟合法反演富蕴地震断裂带应力场[J]. 地震学报, 1984, 6(4): 395-404.
XU Zhong-huai, GE Shu-mo. Stress field in the Fuyun, Xinjiang earthquake fracture zone determined by fitting fault slip vector data[J]. Acta Seismologica Sinica, 1984, 6(4): 395-404 (in Chinese).
[18] 黄骥超, 万永革. 利用小震与强震震源机制解反演首都圈现今构造应力场[J]. 地震, 2015, 35(1): 17-27.
HUANG Ji-chao, WAN Yong-ge, Present tectonic stress field in the capital region of China determined from small and strong earthquake focal mechanisms[J]. Earthquake, 2015, 35(1): 17-27 (in Chinese).
[19] Wan Y, Sheng S, Huang J, et al. The grid search algorithm of tectonic stress tensor based on focal mechanism data and its application in the boundary zone of China, Vietnam and Laos[J]. Journal of Earth Science, 2016, 27(5): 777-785.
[20] 黄骥超, 万永革, 盛书中, 等. 汤加—克马德克俯冲带现今非均匀应力场特征及其动力学意义[J]. 地球物理学报, 2016, 59(2): 578-592.
HUANG Ji-chao, WAN Yong-ge, SHENG Shu-zhong, et al. Heterogeneity of present-day stress field in the Tonga-Kermadec subduction zone and its geodynamic significance[J]. Chinese Journal of Geophysics, 2016, 59(2): 578-592 (in Chinese).
[21] 王金泽, 万永革, 侯江飞, 等. 川滇菱形块体中部现今构造应力场精确求解[J]. 中国地震, 2018, 34(4): 632-641.
WANG Jin-ze, WAN Yong-ge, HOU Jiang-fei, et al. Recent tectonic stress field determination in the central region of Sichuan-Yunnan rhombic bloc[J]. Earthquake Research in China, 2018, 34(4): 632-641 (in Chinese).
[22] 王曰风, 张秀萍, 李峰, 等. 张家口地区近年中小地震震源机制解及应力场反演[J]. 地震, 2019, 39(1): 11-19.
WANG Yu-feng, ZHANG Xiu-ping, LI Feng, et al. Focal mechanism solutions and stress field inversion of recent medium-small earthquakes in Zhangjiakou area[J]. Earthquake, 2019, 39(1): 11-19 (in Chinese).
[23] Shen Z K, Jackson D D, Ge B X. Crustal deformation across and beyond the Los Angeles basin from geodetic measurements[J]. Journal of Geophysical Research: Solid Earth, 1996, 101(B12): 27957-27980.
[24] 万永革, 盛书中, 许雅儒, 等. 不同应力状态和摩擦系数对综合犘波辐射花样影响的模拟研究[J]. 地球物理学报, 2011, 54(4): 994-1001.
WAN Yong-ge, SHENG Shu-zhong, XU Ya-ru, et al. Effect of stress ratio and friction coefficient on composite P wave radiation patterns[J]. Chinese Journal of Geophysics, 2011, 54(4): 994-1001 (in Chinese).
[25] 刘佳丽, 崔震. 辽宁地区地震的时空分布特征及未来地震趋势的预测[J]. 防灾减灾学报, 2014, 30(2): 62-65.
LIU Jia-li, CUI Zhen. Time and space distribution characteristics of the earthquake in Liaoning province and the future earthquake trend prediction[J]. Journal of Disaster Prevention and Reduction, 2014, 30(2): 62-65 (in Chinese).
[26] 杨帆, 盛书中, 万永革, 等. 网格内不满足均匀性假设对应力场反演结果的影响以喜马拉雅东构造结及其周边地区应力场研究为例[J]. 地球物理学进展, 2019, 34(2): 479-488.
YANG Fan, SHENG Shu-zhong, WAN Yong-ge, et al. Impact of stress field in the grid not satisfies the assumption of uniformity on stress field inversion results: the study of stress field in the Eastern Himalayan Syntaxis and its surrounding area is an example[J]. Progress in Geophysics, 2019, 34(2): 479-488 (in Chinese).
[27] 王岩, 张博, 曹凤娟, 等. 辽宁地区2008年以来M_L≥3.0地震震源机制解分析[J]. 防灾减灾学报, 2016, 32(3): 1-6.
WANG Yan, ZHANG Bo, CAO Feng-juan, et al. Focal mechanism solutions analysis of M_L≥3.0 earthquakes in Liaoning 2008[J]. Journal of Disaster Prevention and Reduction, 2016, 32(3): 1-6 (in Chinese).
[28] 林向东, 袁怀玉, 徐平, 等. 华北地区地震震源机制分区特征[J]. 地球物理学报, 2017, 60(12): 4589-4622.
LIN Xiang-dong, YUAN Huai-yu, XU Ping, et al. Zonational characteristics of earthquake focal mechanism solutions in North China[J]. Chinese Journal of Geophysics, 2017, 60(12): 4589-4622 (in Chinese).
[29] Dziewonski A M, Chou T A, Woodhouse J H. Determination of earthquake source parameters from waveform data for studies of global and regional seismicity[J]. Journal of Geophysical Research: Solid Earth, 1981, 86(B4): 2825-2852.
[30] Ekström G, Nettles M, Dziewoński A M. The global CMT project 2004—2010: Centroid-moment tensors for 13, 017 earthquakes[J]. Physics of the Earth and Planetary Interiors, 2012, 200: 1-9.
[31] 冯策, 焦明若, 沈军. 辽宁及邻区背景噪声面波群速度结构研究[J]. 地震, 2018 (1): 84-95.
FENG Ce, JIAO Ming-ruo, SHEN Jun. Surface wave group velocity structure of Liaoning and its adjacent areas based on ambient noise tomography[J]. Earthquake, 2018 (1): 84-95 (in Chinese).
[32] 刘瑞丰, 陈运泰, 任枭, 等. 中国地震台网震级的对比[J]. 地震学报, 2007, 29(5): 467-476.
LIU Rui-feng, CHEN Yun-tai, REN Xiao, et al. Comparison between different earthquake magnitudes determined by China Seismograph Network[J]. Acta Seismologica Sinica, 2007, 29(5): 467-476 (in Chinese).
[33] 雷清清, 廖旭, 董晓燕, 等. 辽宁省主要活动断层与地震活动特征分析[J]. 震灾防御技术, 2008, 3(2): 111-125.
LEI Qing-qing, LIAO Xu, DONG Xiao-yan, et al. Main active faults and their seismic activities in Liaoning province[J]. Technology for Earthquake Disaster Prevention, 2008, 3(2): 111-125 (in Chinese).
[34] 万波, 靳超宇, 索锐. 辽宁省及邻近地区主要地震构造及其危险性判定[J]. 防灾减灾学报, 2017, 33(1): 1-11.
WAN Bo, JIN Chao-yu, SUO Rui. Judgement for the main seismic structures and their seismic risk classifications in Liaoning province and its adjacent area[J]. Journal of Disaster Prevention and Reduction, 2017, 33(1): 1-11 (in Chinese).
[35] 徐纪人, 赵志新, 石川有三. 中国大陆地壳应力场与构造运动区域特征研究[J]. 地球物理学报, 2008, 51(3): 770-781.
XU Ji-ren, ZHAO Zhi-xin, Ishikawa Yuzo. Regional characteristics of crustal stress field and tectonic motions in and around Chinese mainland[J]. Chinese Journal of Geophysics, 2008, 51(3): 770-781 (in Chinese).
[36] 丰成君, 张鹏, 戚帮申, 等. 郯庐断裂带附近地壳浅层现今构造应力场[J]. 现代地质, 2017, (1): 46-70.
FENG Cheng-jun, ZHANG Peng, QI Bang-shen, et al. Recent tectonic stress field at the shallow earth’s crust near the Tan-Lu fault zone[J]. Geoscience, 2017, (1): 46-70 (in Chinese).
[37] 丰成君, 张鹏, 孟静, 等. 郯庐断裂带及邻区深孔地应力测量与地震地质意义[J]. 地球物理学进展, 2017, 32(3): 946-967.
FENG Cheng-jun, ZHANG Peng, MENG Jing, et al. In situ stress measurement at deep boreholes along the Tanlu fault zone and its seismological and geological significance[J]. Progress in Geophysics, 2017, 32(3): 946-967 (in Chinese).
[38] 姜德录, 白云, 卢造勋, 等. 中朝地台东北缘及其邻区软流圈分布特征与构造运动的关系[J]. 中国地震, 2000, 16(1): 14-21.
JIANG De-lu, BAI Yun, LU Zao-xun, et al. The relation between the asthenosphere thickness distributed characteristics and tectogenesis of Sino-Korean platform and its neighboring area[J]. Earthquake Research in China, 2000, 16(1): 14-21 (in Chinese).
[39] 万波, 贾丽华, 戴盈磊, 等. 辽东半岛中强地震活动及其与构造相关性[J]. 地震地质, 2013, 35(2): 300-314.
WAN Bo, JIA Li-hua, DAI Ying-lei, et al Moderate-strong earthquakes and their tectonic correlation in the Liaoning Peninsula[J]. Seismology and Geology, 2013, 35(2): 300-314 (in Chinese).
[40] 段梦乔, 赵翠萍. 海城, 盖州地区地震震源机制及一致性参数特征研究[J]. 地震, 2019, 39(4): 39-53.
DUAN Meng-qiao, ZHAO Cui-ping, The research on characteristcs of focal mechanisms and consistency parameters in Haicheng and Gaizhou area[J]. Earthquake, 2019, 39(4): 39-53 (in Chinese).
[41] 邓起东, 王挺梅, 李建国, 等. 关于海城地震震源模式的讨论[J]. 地质科学, 1976, (3): 195-204.
DENG Qi-dong, WANG Ting-mei, LI Jian-guo, et al. A discussion on source model of Haicheng eartuqhake[J]. Scienyia Geologica Sinica, 1976, (3): 195-204 (in Chinese).
[42] 太龄雪, 高原, 石玉涛, 等. 辽宁区域地震台网的地壳剪切波分裂研究[J]. 地震地质, 2009, 31(3): 401-414.
TAI Ling-xue, GAO Yuan, SHI Yu-tao, et al. A study of shear-wave splitting in the crust by Liaoning telemetry seismic network of China[J]. Seismology and Geology, 2009, 31(3): 401-414 (in Chinese).
[43] 孙启凯, 池国民, 畅柳, 等. 辽宁地区地壳垂直形变特征与地震危险性分析[J]. 地震学报, 2017, (6): 891-898.
SUN Qi-kai, CHI Guo-min, YANG Liu, et al. Characteristics of crust vertical deformation and seismic risk analysis in Liaoning area[J]. Acta Seismological Sinica, 2017, (6): 891-898 (in Chinese).
[44] 葛荣峰, 张庆龙, 解国爱, 等. 郯庐断裂带北段及邻区现代地震活动性与应力状态[J]. 地震地质, 2009, 31(1): 141-154.
GE Rong-feng, ZHANG Qing-long, XIE Guo-ai, et al. Seismic activity and stress state of the northern Tanlu fault zone and its adjacent areas[J]. Seismology and Geology, 2009, 31(1): 141-154 (in Chinese).
[45] 张慧, 焦明若, 刘峡. 太平洋板块俯冲对中国东北深浅震影响机理的数值模拟[J]. 地震, 2012, 32(2): 135-144.
ZHANG Hui, JIAO Ming-ruo, LIU Xia. Numerical simulations of the influencing mechanism of the Pacific Plate Subduction to NE China on deep and shallow earthquakes[J]. Earthquake, 2012, 32(2): 135-144 (in Chinese).
[46] 谭成轩, 胡秋韵, 张鹏, 等. 日本M_W9.0级大地震前后华北和东北地区现今构造应力作用调整过程与研究意义探讨[J]. 地学前缘, 2015, 22(1): 345-359.
TAN Cheng-xuan, HU Qiu-yun, ZHANG Peng, et al. Present tectonic stress adjustment process before and after Japan M_W9.0 earthquake in North and Northeast China and its research significance[J]. Earth Science Frontiers, 2015, 22(1): 345-359 (in Chinese).
[47] 丰成君, 张鹏, 孙炜锋, 等. 日本M_W9.0级地震对中国华北-东北大陆主要活动断裂带的影响及地震危险性初步探讨[J]. 地学前缘, 2013, (6): 123-140.
FENG Cheng-jun, ZHANG Peng, SUN Wei-feng, et al. A discussion on the impact of Japan M_W9.0 earthquake on the active fault zone in north-and northeast-China continent and the seismic risk[J]. Earth Science Frontiers, 2013, (6): 123-140 (in Chinese).
[48] 辽宁省地质矿产局. 辽宁省区域地质志[M]. 北京: 地质出版社, 1989.
Bureau of Geology and Mineral Resources of Liaoning Province. Regional geology of Liaoning province[M]. Beijing: Geological Publishing House, 1989 (in Chinese).