The analysis of stress field in northern Jiangxi Province
-
摘要: 采用双差定位方法对赣北地区2008年1月—2019年7月545个地震进行重新定位，重定位地震在九江、宜春和新余等地区分布更为集中。结合地震精定位结果，利用格点尝试法分区计算赣北地区小震综合断层面解。结果表明，九江及周边地区最大主应力轴为近东西向，最小主应力轴为近南北向，这与其他学者的研究结果基本一致，认为该地区构造应力场特征需要更多的研究来进一步细化分析。宜春及周边地区最大主应力轴为近东西向，最小主应力轴为北北东向，应力类型为逆断型。Abstract: We relocated 545 earthquakes that occurred in northern Jiangxi Province, from January 2008 to July 2019, using the double-difference location algorithm to improve relative location accuracy. Compared with the initial locations, the results of precise relocation in Jiujiang, Yichun and Xinyu areas are more concentrated. According to the precise relocation results, composite fault plane solution was calculated with the grid point test method. The result shows that the direction of maximum principal stress of Jiujiang and adjacent areas is nearly EW and that of the minimum principal stress is nearly NS, which is basically consistent with the previous research results. It is considered that the more research is needed to further refine and analyze characteristics of tectonic stress field in Jiujiang area. In Yichun and adjacent areas, the direction of maximum principal stress is nearly EW and that of the minimum principal stress is NNE and the area is in a thrust stress regime.
-
图 1 重定位结果及单个地震震源机制解空间分布图
Figure 1. Relocation epicenters and focal mechanism solution of single earthquake
图 3 2个地震集中区综合断层面解
（a）九江地区（A区）P波初动极性数据反演结果； （b）宜春地区（B区）P波初动极性数据反演结果； （c）九江地区（A区）单个地震震源机制解的P、T轴数据反演结果
Figure 3. Composite fault plane solution of two seismic concentration areas
（a）Composite fault plane solution of initial P wave polarity in Jiujiang area（A）； （b）Composite fault plane solution of initial P wave polarity in Yichun area（B）； （c）Composite fault plane solution of P-axis and T-axis of focal mechanism solution in Jiujiang area（A）
表 1 研究区综合断层面解（平均结果）
Table 1. The composite fault plane solution in northern Jiangxi Province（average result）
区域 数据资料 P轴 B轴 T轴 类型 方位/° 倾角/° 方位/° 倾角/° 方位/° 倾角/° A区 P波初动极性数据 116 31 224 28 348 46 不确定型 A区 单个震源机制解P、T轴数据 251 74 86 16 355 4 正断型 B区 P波初动极性数据 262 21 161 28 24 54 逆断型 
下载: 导出CSV
-
[1] 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,University of Tokyo,1966,44(2):447-471 [2] 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):268-279Xu Zhonghuai,Yan Ming,Zhao Zhonghe. Evaluation of the direction of tectonic stress in north China from recorded data of a large number of small earthquakes[J]. Acta Seismol. Sinica,1983,5(3):268-279 [3] 万永革,吴逸民,盛书中,等. P波极性数据所揭示的台湾地区三维应力结构的初步结果[J]. 地球物理学报,2011,54(11):2809-2818 doi: 10.3969/j.issn.0001-5733.2011.11.011Wan Yongge,Wu Yimin,Sheng Shuzhong,et al. Preliminary result of Taiwan 3D stress field from P wave polarity data[J]. Chinese J. Geophys.,2011,54(11):2809-2818 doi: 10.3969/j.issn.0001-5733.2011.11.011 [4] 樊文杰,崔效锋,万永革. 1994年美国北岭地震震源区构造应力状态反演及动力学解释[J]. 大地测量与地球动力学,2017,37(2):169-175Fan Wenjie,Cui Xiaofeng,Wan Yongge. Tectonic stress inversion and dynamic implications in the 1994 north ridge earthquake source region[J]. Journal of Geodesy and Geodynamics,2017,37(2):169-175 [5] Zoback M L. First and second order patterns of stress in the lithosphere:The world stress map project[J]. J. Geophys. Res.,1992,97(B8):11703-11728 doi: 10.1029/92JB00132 [6] 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 doi: 10.3321/j.issn:0001-5733.1989.06.004Xu Zhonghuai,Wang Suyun,Huang Yurui,et al. The tectonic stress field of Chinese continent deduced from a great number of earthquakes[J]. Chinese J. Geophys.,1989,32(6):636-647 doi: 10.3321/j.issn:0001-5733.1989.06.004 [7] 胡幸平,崔效锋. 华北地区中部地震精定位与构造应力场研究[J]. 震灾防御技术,2013,8(4):351-360 doi: 10.3969/j.issn.1673-5722.2013.04.002Hu Xingping,Cui Xiaofeng. Study on earthquake relocation and tectonic stress field in central north China[J]. Technology for Earthquake Disaster Prevention,2013,8(4):351-360 doi: 10.3969/j.issn.1673-5722.2013.04.002 [8] 盛书中,万永革,黄骥超,等. 应用综合震源机制解法推断鄂尔多斯块体周缘现今地壳应力场的初步结果[J]. 地球物理学报,2015,58(2):436-452 doi: 10.6038/cjg20150208Sheng Shuzhong,Wan Yongge,Huang Jichao,et al. Present tectonic stress field in the Circum-Ordos region deduced from composite focal mechanism method[J]. Chinese J. Geophys.,2015,58(2):436-452 doi: 10.6038/cjg20150208 [9] 俞春泉,陶开,崔效锋,等. 用格点尝试法求解P波初动震源机制解及解的质量评价[J]. 地球物理学报,2009,52(5):1402-1411 doi: 10.3969/j.issn.0001-5733.2009.05.030Yu Chunquan,Tao Kai,Cui Xiaofeng,et al. P-wave first-motion focal mechanism solutions and their quality evaluation[J]. Chinese J. Geophys.,2009,52(5):1402-1411 doi: 10.3969/j.issn.0001-5733.2009.05.030 [10] 李凯,吴中海,李家存,等. 江西九江及邻区主要断裂活动性遥感综合分析[J]. 地质力学学报,2016,22(3):577-593 doi: 10.3969/j.issn.1006-6616.2016.03.013Li Kai,Wu Zhonghai,Li Jiacun,et al. Comprehensive remote sensing analysis on activities of the main faults in Jiujiang and adjacent areas,Jiangxi[J]. Journal of Geomechanics,2016,22(3):577-593 doi: 10.3969/j.issn.1006-6616.2016.03.013 [11] 吕坚,郑勇,倪四道,等. 2005年11月26日九江—瑞昌MS5.7、MS4.8地震的震源机制解与发震构造研究[J]. 地球物理学报,2008,51(1):158-164 doi: 10.3321/j.issn:0001-5733.2008.01.020Lü Jian,Zheng Yong,Ni Sidao,et al. Focal mechanisms and seismogenic structures of the MS5.7 and MS4.8 Jiujiang-Ruichang earthquakes of Nov. 26,2005[J]. Chinese J. Geophys.,2008,51(1):158-164 doi: 10.3321/j.issn:0001-5733.2008.01.020 [12] 曾文敬,赵爱平,汤兰荣,等. 九江—瑞昌5.7级地震余震震源机制解[J]. 大地测量与地球动力学,2009,29(4):42-47Zeng Wenjing,Zhao Aiping,Tang Lanrong,et al. Focal mechanism solutions of aftershocks of Jiujiang-Ruichang earthquake[J]. Journal of Geodesy and Geodynamics,2009,29(4):42-47 [13] 汤兰荣,吕坚,曾新福,等. 九江—瑞昌地震震源机制和应力场特征[J]. 大地测量与地球动力学,2018,38(8):791-795Tang Lanrong,Lü Jian,Zeng Xinfu,et al. Characteristics of focal mechanisms and stress field in the border region of Jiujiang and Ruichang[J]. Journal of Geodesy and Geodynamics,2018,38(8):791-795 [14] 倪红玉,刘泽民,何康. 郯庐断裂带安徽段中小地震震源机制及现代应力场特征[J]. 地震工程学报,2013,35(3):677-683 doi: 10.3969/j.issn.1000-0844.2013.03.0677Ni Hongyu,Liu Zemin,He Kang. Study on focal mechanisms of moderates-mall earthquakes and characteristics of recent tectonic stress field in the Anhui sector of Tanlu fault zone[J]. China Earthquake Engineering Journal,2013,35(3):677-683 doi: 10.3969/j.issn.1000-0844.2013.03.0677 [15] 吕坚,曾文敬,谢祖军,等. 2011年9月10日瑞昌—阳新4.6级地震的震源破裂特征与区域强震危险性[J]. 地球物理学报,2012,55(11):3625-3633 doi: 10.6038/j.issn.0001-5733.2012.11.011Lü Jian,Zeng Wenjing,Xie Zujun,et al. Rupture characteristics of the MS4.6 Ruichang-Yangxin earthquake of Sep. 10,2011 and the strong earthquake risk in the region[J]. Chinese J. Geophys.,2012,55(11):3625-3633 doi: 10.6038/j.issn.0001-5733.2012.11.011 [16] 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 doi: 10.3321/j.issn:0001-5733.2004.04.016Xie Furen,Cui Xiaofeng,Zhao Jiantao,et al. Regional division of the recent tectonic stress field in China and adjacent areas[J]. Chinese J. Geophys.,2004,47(4):654-662 doi: 10.3321/j.issn:0001-5733.2004.04.016 [17] 丁立丰, 侯砚和, 郭启良. 大庆至广州高速公路江西武宁至吉安段九岭山隧道 ZK1、ZK2 孔水压致裂法地应力测量报告[R]. 北京: 中国地震局地壳应力研究所, 2006Ding Lifeng, Hou Yanhe, Guo Qiliang. In situ stress measurement report of ZK1 and ZK2 holes of Jiulingshan tunnel in Jiangxi Wuning Ji’an section of Daqing Guangzhou expressway using hydraulic fracturing method[R]. Beijing: Institute of Crustal Dynamics, China Earthquake Administration, 2006 [18] 陈浩,肖孟仁,项月文,等. 赣北地区中小地震震源机制分析[J]. 地震地磁观测与研究,2017,38(6):21-25 doi: 10.3969/j.issn.1003-3246.2017.06.004Chen Hao,Xiao Mengren,Xiang Yuewen,et al. Analysis on the focal mechanism of medium-small earthquakes in the northern area of Jiangxi Province[J]. Seismological and Geomagnetic Observation and Research,2017,38(6):21-25 doi: 10.3969/j.issn.1003-3246.2017.06.004 [19] 朱介寿, 蔡学林, 曹家敏, 等. 中国华南及东海地区岩石圈三维结构及演化[M]. 北京: 地震出版社, 2005Zhu Jieshou, Cai Xuelin, Cao Jiamin, et al. The three-dimensional structure of lithosphere and its evolution in south China and east China sea[M]. Beijing: Seismological Press, 2005 [20] Waldhauser F,Ellsworth W L. A double-difference earthquake location algorithm:Method and application to the northern Hayward fault,california[J]. Bull. Seismol. Soc. Amer.,2000,90(6):1353-1368 doi: 10.1785/0120000006 [21] 杨智娴, 陈运泰, 郑月军, 等. 双差地震定位法在我国中西部地区地震精确定位中的应用[J]. 中国科学D辑: 地球科学, 2003, 33（增刊）: 129-134Yang Zhixian, Chen Yuntai, Zheng Yuejun, et al. Accurate relocation of earthquakes in central western China using the double difference earthquake location algorithm[J]. Science in China （Series D）, 2003, 33（Suppl.）: 129-134 [22] 朱艾斓,徐锡伟,周永胜,等. 川西地区小震重新定位及其活动构造意义[J]. 地球物理学报,2005,48(3):629-636 doi: 10.3321/j.issn:0001-5733.2005.03.021Zhu Ailan,Xu Xiwei,Zhou Yongsheng,et al. Relocation of small earthquakes in western Sichuan,China and its implications for active tectonics[J]. Chinese J. Geophys.,2005,48(3):629-636 doi: 10.3321/j.issn:0001-5733.2005.03.021 [23] 黄嫒,杨建思,张天中. 2003年新疆巴楚—伽师地震序列的双差法重新定位研究[J]. 地球物理学报,2006,49(1):162-169 doi: 10.3321/j.issn:0001-5733.2006.01.022Huang Yuan,Yang Jiansi,Zhang Tianzhong. Relocation of the Bachu-Jiashi,Xinjiang earthquake sequence in 2003 using the double-difference location algorithm[J]. Chinese J. Geophys.,2006,49(1):162-169 doi: 10.3321/j.issn:0001-5733.2006.01.022 [24] 房立华,吴建平,王未来,等. 云南鲁甸MS6.5地震余震重定位及其发震构造[J]. 地震地质,2014,36(4):1173-1185 doi: 10.3969/j.issn.0253-4967.2014.04.019Fang Lihua,Wu Jianping,Wang Weilai,et al. Relocation of the aftershock sequence of the MS6.5 Ludian earthquake and its seismogenic structure[J]. Seismology and Geology,2014,36(4):1173-1185 doi: 10.3969/j.issn.0253-4967.2014.04.019 [25] Hardebeck J L,Shearer P M. A new method for determining first-motion focal mechanisms[J]. Bull. Seismol. Soc. Amer.,2002,92(6):2264-2276 doi: 10.1785/0120010200 [26] 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):34-42Xu Xiangtong,Xu Zhonghuai,Zhang Dongning. A probabilistic grid test method of determining earthquake focal mechanisms using P-wave onset polarity data[J]. Seismological and Geomagnetic Observation and Research,1995,16(4):34-42 [27] 胡幸平,崔效锋,宁杰远,等. 基于汶川地震序列震源机制解对龙门山地区构造变形模式的初步探讨[J]. 地球物理学报,2012,55(8):2561-2574 doi: 10.6038/j.issn.0001-5733.2012.08.008Hu Xingping,Cui Xiaofeng,Ning Jieyuan,et al. Preliminary study on tectonic deformation models in the Longmenshan region based on focal mechanism solutions of the Wenchuan earthquake sequence[J]. Chinese J. Geophys.,2012,55(8):2561-2574 doi: 10.6038/j.issn.0001-5733.2012.08.008 [28] 阎春恒,周斌,陆丽娟,等. 龙滩水库蓄水后库区中小地震震源机制[J]. 地球物理学报,2015,58(11):4207-4222Yan Chunheng,Zhou Bin,Lu Lijuan,et al. Focal mechanisms of moderate and small earthquakes occurred after reservoir recharge in the Longtan reservoir region[J]. Chinese J. Geophys.,2015,58(11):4207-4222 [29] 崔效锋,谢富仁,赵建涛. 中国及邻区震源机制解的分区特征[J]. 地震地质,2005,27(2):298-307 doi: 10.3969/j.issn.0253-4967.2005.02.012Cui Xiaofeng,Xie Furen,Zhao Jiantao. The regional characteristics of focal mechanism solutions in China and its adjacent areas[J]. Seismology and Geology,2005,27(2):298-307 doi: 10.3969/j.issn.0253-4967.2005.02.012 [30] Snoke J A,Munsey J W,Teague A G,et al. A program for focal mechanism determination by combined use of polarity and SV/P amplitude ratio data[J]. Earthquake Notes,1984,55(3):15 [31] 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 doi: 10.3969/j.issn.0253-4967.2003.01.009Fan Junxi,Ma Jin,Diao Guiling. Contemporary tectonic stress field around the Ordos fault block inferred from earthquake focal mechanisms[J]. Seismology and Geology,2003,25(1):88-99 doi: 10.3969/j.issn.0253-4967.2003.01.009 [32] 李瑞莎,崔效锋,刁桂苓,等. 华北北部地区现今应力场时空变化特征研究[J]. 地震学报,2008,30(6):570-580 doi: 10.3321/j.issn:0253-3782.2008.06.003Li Ruisha,Cui Xiaofeng,Diao Guiling,et al. Temporal and spatial variation of the present crustal stress in northern part of North China[J]. Acta Seismol. Sinica,2008,30(6):570-580 doi: 10.3321/j.issn:0253-3782.2008.06.003 [33] Michael A J. Determination of stress from slip data:Faults and folds[J]. J. Geophys. Res.,1984,89(B13):11517-11526 doi: 10.1029/JB089iB13p11517 [34] Michael A J. Use of focal mechanisms to determine stress:A control study[J]. J. Geophys. Res.,1987,92(B1):357-368 doi: 10.1029/JB092iB01p00357 [35] 罗丽,吕坚,曾文敬,等. 江西九江—瑞昌地震序列震源位置和发震构造再研究[J]. 地震地质,2016,38(2):342-351 doi: 10.3969/j.issn.0253-4967.2016.02.009Luo Li,Lü Jian,Zeng Wenjing,et al. Restudy on hypocentral location and seismogenic tectonic of the Jiujiang-Ruichang MS5.7 earthquake sequence,Jiangxi Province[J]. Seismology and Geology,2016,38(2):342-351 doi: 10.3969/j.issn.0253-4967.2016.02.009 -
点击查看大图
图(3) / 表(1)
计量
- 文章访问数: 299
- HTML全文浏览量: 124
- PDF下载量: 20
