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Hao Ping　Luuml; Xiaojian　Tian Qinjian　Fu Zhengxiang　Chen Dan. 2012: Contemporary tectonic stress field on boundaries of active tectonic blocks in and around western China. Acta Seismologica Sinica, 34(4): 439-450.
Citation: Hao Ping　Luuml; Xiaojian　Tian Qinjian　Fu Zhengxiang　Chen Dan. 2012: Contemporary tectonic stress field on boundaries of active tectonic blocks in and around western China. Acta Seismologica Sinica, 34(4): 439-450.
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Contemporary tectonic stress field on boundaries of active tectonic blocks in and around western China

  • (Institute of Earthquake Science, China Earthquake Administration, Beijing 100036, China)

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  • Published Date: July 12, 2012
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    • Abstract
  • Contemporary tectonic stress field on boundaries of active tectonic blocks in and around western China mainland is obtained from the data of Harvard CMT solution and reliable focal mechanism solutions from 1920 to 1999 selected by Xu Zhonghuai. We obtained the stress field by testing input and checking FMSI code(Gephart) many times. Most of the maximum principal stress sigma;1 axes on active tectonic boundaries are horizontal. To the west of 90deg;E in and around western China mainland, the horizontal sigma;1 axes are nearly in N-S direction. In the northeastern area of Qingzang plateau, the horizontal sigma;1 axes are nearly NE-SW. In the southeastern area of Qingzang plateau, the horizontal sigma;1 axes turn around clockwise around eastern end of Himalaya arc. The minimum principal stress sigma;3 axes show two dominant dip angles. In Xiyu active tectonic block region and on some segments of the northeastern edge of Qingzang plateau, the sigma;3 axes are steep, while in the Qingzang block region the sigma;3 axes are horizontal. So there are more thrust earthquakes in the Xiyu block region and on some segments of the northeastern edge of Qingzang plateau than in the Qingzang plateau block region. The stress field on the same active tectonic boundary is heterogeneous. On north Tianshan belt, south Tianshan belt, west Qinling-Delingha belt, Minshan-Longmenshan belt and Anninghe-Xiaojiang belt, the heterogeneity is relatively weak. On west Kunlun belt, Haiyuan-Qilian belt, east Kunlun belt, Mani-Yushu belt, Lancangjiang belt and western belt of west Yunnan block, the heterogeneity is relatively strong. The heterogeneity on Kalakunlun-Jiali belt and Himalaya belt is more notable. Due to limited focal mechanism data, this paper only gave the stress field on some segments of the active tectonic block boundaries.
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    谢富仁, 陈群策, 崔效锋, 李宏, 杨树新, 陈连旺. 2003. 中国大陆地壳应力环境研究［M］. 北京: 地质出版社: 3——12.

    谢富仁，崔效锋，赵建涛, 陈群策, 李宏. 2004．中国大陆及邻区现代构造应力场分区［J］．地球物理学报，47(4): 654——662.

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    许忠淮, 汪素云, 黄雨蕊, 高阿甲, 金小锋, 常向东. 1987. 由多个小震推断的青甘和川滇地区地壳应力场的方向特征［J］. 地球物理学报, 30(5): 476——486.

    许忠淮, 汪素云, 黄雨蕊, 高阿甲. 1989. 由大量地震资料推断我国大陆构造应力场［J］. 地球物理学报, 35(5): 560——572.

    许忠淮. 2001. 东亚地区现今构造应力图的编制［J］. 地震学报，23(5)：492——501.

    薛宏远, 鄢家全. 1984. 鄂尔多斯地块周围的现代地壳应力场［J］. 地球物理学报, 27(2): 144——152.

    张国民，张培震．2000．“大陆强震机理与预测”中期学术进展［J］．中国基础科学，（10）： 4——10．

    张国民，马宏生，王辉，王新岭．2005．中国大陆活动地块边界带与强震活动［J］． 地球物理学报，48(3)：138——146.

    张培震，邓起东，张国民，马瑾, 甘卫军, 闵伟, 毛凤英, 王琪．2003．中国大陆的强震活动与活动地块［J］．中国科学: D辑，33（增刊）：12——20．

    Gephart J W. 1990. FMSI: A fortran program for inverting fault/slickenside and earthquake focal mechanism data to obtain the original stress tensor［J］. Comput Geosci, 16(7): 953——989.

    Gephart J W, Forsyth D W. 1984. An improved method for determining the regional stress tensor using focal mechanism data: Application to the San Fernando earthquake sequence［J］. J Geophys Res, 89(B11): 9305——9320.

    Wan Y G. 2010. Contemporary tectonic stress field in China［J］. Earthq Sci,  23(4): 377——386.

    Zoback M L. 1992. First——and second——order patterns of stress in the lithosphere: The world stress map project［J］. J Geophys Res, 97(B8): 11703——11728.

    刁桂苓，徐锡伟, 陈于高, 黄柏寿, 王晓山, 冯向东, 杨雅琼. 2011. 汶川MW7.9和集集MW7.6地震前应力场转换现象及其可能的前兆意义［J］. 地球物理学报, 54(1): 128——136. 

    杜兴信，邵辉成. 1999．由震源机制解反演中国大陆现代构造应力场［J］．地震学报，21(4): 354——360.

    李钦祖, 王泽皋, 贾云年, 靳雅敏. 1973. 由单台小地震资料所得两个区域的应力场［J］. 地球物理学报, 16(1): 49——61.

    李延兴, 杨国华, 李智, 郭良迁, 黄珹, 朱文耀, 符养, 王琪, 江在森, 王敏. 2003. 中国大陆活动地块的运动与应变状态［J］. 中国科学: D辑，33(刊): 65——81.

    马宏生，张国民，刘杰，李丽, 陈化然. 2006. 中国大陆活动地块边界带强震活动特征的研究［J］. 地震地质，28（1）：48——60.

    康英，杨选，陈杏，陈贵美, 郑斯华．2008．广东及邻区的应力场反演［J］． 地震学报， 30(1): 59——66.

    汪素云, 许忠淮. 1985. 中国东部大陆的地震构造应力场［J］. 7(1): 17——22.

    谢富仁, 刘光勋. 1989. 阿尔金断裂带中段区域新构造应力场分析［J］. 中国地震, 5(3): 26——36.

    谢富仁， 祝景忠， 粱海庆, 刘光勋. 1993． 中国西南地区现代构造应力场基本特征［J］．地震学报，15(4): 407——417.

    谢富仁, 陈群策, 崔效锋, 李宏, 杨树新, 陈连旺. 2003. 中国大陆地壳应力环境研究［M］. 北京: 地质出版社: 3——12.

    谢富仁，崔效锋，赵建涛, 陈群策, 李宏. 2004．中国大陆及邻区现代构造应力场分区［J］．地球物理学报，47(4): 654——662.

    许忠淮, 阎明，赵仲和. 1983. 由多个小震推断的华北地区构造应力场的方向［J］. 地震学报, 5(3): 268——279.

    许忠淮, 戈澍谟. 1984. 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, 8(5): 395——404.

    许忠淮, 汪素云, 黄雨蕊, 高阿甲, 金小锋, 常向东. 1987. 由多个小震推断的青甘和川滇地区地壳应力场的方向特征［J］. 地球物理学报, 30(5): 476——486.

    许忠淮, 汪素云, 黄雨蕊, 高阿甲. 1989. 由大量地震资料推断我国大陆构造应力场［J］. 地球物理学报, 35(5): 560——572.

    许忠淮. 2001. 东亚地区现今构造应力图的编制［J］. 地震学报，23(5)：492——501.

    薛宏远, 鄢家全. 1984. 鄂尔多斯地块周围的现代地壳应力场［J］. 地球物理学报, 27(2): 144——152.

    张国民，张培震．2000．“大陆强震机理与预测”中期学术进展［J］．中国基础科学，（10）： 4——10．

    张国民，马宏生，王辉，王新岭．2005．中国大陆活动地块边界带与强震活动［J］． 地球物理学报，48(3)：138——146.

    张培震，邓起东，张国民，马瑾, 甘卫军, 闵伟, 毛凤英, 王琪．2003．中国大陆的强震活动与活动地块［J］．中国科学: D辑，33（增刊）：12——20．

    Gephart J W. 1990. FMSI: A fortran program for inverting fault/slickenside and earthquake focal mechanism data to obtain the original stress tensor［J］. Comput Geosci, 16(7): 953——989.

    Gephart J W, Forsyth D W. 1984. An improved method for determining the regional stress tensor using focal mechanism data: Application to the San Fernando earthquake sequence［J］. J Geophys Res, 89(B11): 9305——9320.

    Wan Y G. 2010. Contemporary tectonic stress field in China［J］. Earthq Sci,  23(4): 377——386.

    Zoback M L. 1992. First——and second——order patterns of stress in the lithosphere: The world stress map project［J］. J Geophys Res, 97(B8): 11703——11728.
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