Advanced Search
ZHANG JIE, ZANG SHAOXIAN h. 1986: CHARACTERISTICS OF EARTHQUAKE DISTRIBUTION AND THE MECHANISM OF EARTHQUAKES IN THE BOUNDARY AREA BETWEEN BURMA, INDIA AND CHINA. Acta Seismologica Sinica, 8(3): 240-253.
Citation: ZHANG JIE, ZANG SHAOXIAN h. 1986: CHARACTERISTICS OF EARTHQUAKE DISTRIBUTION AND THE MECHANISM OF EARTHQUAKES IN THE BOUNDARY AREA BETWEEN BURMA, INDIA AND CHINA. Acta Seismologica Sinica, 8(3): 240-253.
shu

CHARACTERISTICS OF EARTHQUAKE DISTRIBUTION AND THE MECHANISM OF EARTHQUAKES IN THE BOUNDARY AREA BETWEEN BURMA, INDIA AND CHINA

  • Department of Geophysics, Beijing University

More Information
  • Published Date: August 31, 2011
    Graphical Abstract
    • Abstract
  • The spatial distribution was studied of the earthquakes of mb4.0 which oceured in the region from 20Nto 30Nand from 90Eto 104Efor the period from January 1965 to October 1981. It is seen that the earthquakes mainly oceured in the regions near the northwest, northeast and southeast boundaries of the Assam massif and along some faults which are concave towards the Assam massif, forming some belts or clusters of earthquakes. Among them there is the highest densty of earthquake in the Burmese arc, southeast side of the Assam massif, nearly all of the earthquakes of intermediate focus oceured in this area. The focuses of the earthquakes become deeper gradually from west to east forming an obliqae zone located from 20 Nto 26 Nbeneath the Burmese central belt. South of 24 Nthe zone dips due east at an angle of about 30; north of 24 Nthe oblique zone dips in the direction S70Eat an angle of about 50, the thickness of the oblique zone is 20-30km. It seems that the oblique zone becomes two thin layers each with depths varying from 50 km to 110 km and separation of about 30 km.Fault plane solutions for 38 earthquakes occurring in the same period have been determined. The fault plane solutions are mainly strike-slip in the Burmese are; the fault plane solutions showing thrusts with strike-slip component appear in the area near the northwest and the northwest and the northeast boundaries of the Assam massif. On the oblique zone of earthquakes the fault plaice solutions seem to vary with depth: They are strike-slip above the depth of 50 km; in the depths from 50 km to 70 km the fault plane solutions show mainly normal fault, but most of them are strike-slip with thrust or normal compoment in the deoths from 50 km to 120 km. Fault plane solutions of only two earthquakes with focuses below 120km have been determined, they mainly represent thrust faults. The pressure axes of the fault plane solutions are mainly in the direction NEand nearly horizontal in the nqrthern part of Burma and the vicinity of the Assam massif; it indicates that in this area the Indian plate collides with the Eurasian plate in the direction toward NE.
    • FullText(HTML)
    • References (1)
  • [1] Gupta, H. K., V. D. Rao, and ,J. Singh, Continental collision tectonics; evidence from the Himalaya and the neighbouring regions, Tectonophysics, 81, 213——238, 1982.

    [2] Chandra, U., Seismicity, earthquake mechanisms and tectonics along the Himalayan mountain range and vicinity, Phys. earth planet. Inter., 16, 109——131, 1978.

    [3] Molnar, P. and Topponnier, Cenozoic tectonics of Asia, effects of a continental collision, Science,189, 419——426, 1975.

    [4] 环文林、汪素云、时振梁和郡家全,青藏高原震源分布与板块运动,地球物理学报,23, 269——280, 1980.

    [5] Verma, R. K., M. Mukhopadhyay, and M. S. Ahluwalia, Earthquake mechanism and tectonics of northern Burma, Tectonophysics, 32, 387——389, 1976.

    [6] Verma, R. K., M. Mukhopadhyay, and M. S. Ahluwalia, Seismicity, gravity and tectonics of northeast India and northern Burma, Bull. Seism. Soc. Amen, 66, 1683——1694, 1976.

    [7] Chandra, U., Seismicity, earthquake mechanisms and tectonics of Burma, 20°N——28°N, Geophys.J.R. Astron. Soc., 40, 367——381, 1975.

    [8] Kumar, S., Geodynamics of Burma and Andaman——Nicobar region, on the basis of tectonic stress and regional seismicity, Tectortophysics,79, 75——95, 1981.

    [9] Verma,R. K., M. Mukhopadhyay, and A. K. Nag, Seismicity and tectonics in south China and Butma,Tectonophysics,64,85——96, 1980.

    [10] 阉荣举、张四昌,晏风桐和俞林胜,我国西南地区现代构造应力场与现代构造特征的探讨,地球物理学报,20,96——109,1977.

    [11] 闲荣举、王绍晋、黄山昆和宋文,中国西南地区现代构造应力场与板内断块相对运动,地震地质,5, 7 9——89,1983

    [12] 国家地震局地质研究所,亚欧地震构造图,地图出版社,1981.

    [1] Gupta, H. K., V. D. Rao, and ,J. Singh, Continental collision tectonics; evidence from the Himalaya and the neighbouring regions, Tectonophysics, 81, 213——238, 1982.

    [2] Chandra, U., Seismicity, earthquake mechanisms and tectonics along the Himalayan mountain range and vicinity, Phys. earth planet. Inter., 16, 109——131, 1978.

    [3] Molnar, P. and Topponnier, Cenozoic tectonics of Asia, effects of a continental collision, Science,189, 419——426, 1975.

    [4] 环文林、汪素云、时振梁和郡家全,青藏高原震源分布与板块运动,地球物理学报,23, 269——280, 1980.

    [5] Verma, R. K., M. Mukhopadhyay, and M. S. Ahluwalia, Earthquake mechanism and tectonics of northern Burma, Tectonophysics, 32, 387——389, 1976.

    [6] Verma, R. K., M. Mukhopadhyay, and M. S. Ahluwalia, Seismicity, gravity and tectonics of northeast India and northern Burma, Bull. Seism. Soc. Amen, 66, 1683——1694, 1976.

    [7] Chandra, U., Seismicity, earthquake mechanisms and tectonics of Burma, 20°N——28°N, Geophys.J.R. Astron. Soc., 40, 367——381, 1975.

    [8] Kumar, S., Geodynamics of Burma and Andaman——Nicobar region, on the basis of tectonic stress and regional seismicity, Tectortophysics,79, 75——95, 1981.

    [9] Verma,R. K., M. Mukhopadhyay, and A. K. Nag, Seismicity and tectonics in south China and Butma,Tectonophysics,64,85——96, 1980.

    [10] 阉荣举、张四昌,晏风桐和俞林胜,我国西南地区现代构造应力场与现代构造特征的探讨,地球物理学报,20,96——109,1977.

    [11] 闲荣举、王绍晋、黄山昆和宋文,中国西南地区现代构造应力场与板内断块相对运动,地震地质,5, 7 9——89,1983

    [12] 国家地震局地质研究所,亚欧地震构造图,地图出版社,1981.
    • Related Articles

  • Related Articles

    Yu Mengxue, Wu Qingju, Qiang Zhengyang, Bai Lanshu. 2023: Focal mechanism solutions and stress field characteristics of small and moderate earthquakes in Weiyuan area， southern Sichuan basin. Acta Seismologica Sinica, 45(6): 1025-1039. DOI: 10.11939/jass.20220057
    Fan Wenjie, Cui Xiaofeng, Hu Xingping, Chen Jiawei. 2019: Focal mechanism solutions and spatio-temporal variations of the present tectonic stress field in Capital Circle region. Acta Seismologica Sinica, 41(1): 33-45. DOI: 10.11939/jass.20180064
    2018: 《纪念汶川大地震十周年》专辑前言. Acta Seismologica Sinica, 40(3): 1-1.
    Li Feng, Li Yingchun, Li Qiang, Feng Zhisheng, Wang Junfei. 2017: Focal mechanism of the Sheyang MS4.4 earthquake on October 20, 2016 and the spatio-temporal distribution of the earthquake sequence. Acta Seismologica Sinica, 39(5): 659-668. DOI: 10.11939/jass.2017.05.003
    Lü Miaomiao, Ding Zhifeng, Xu Xiaoming, Li Dahu, Ye Qingdong, Zheng Chen. 2015: Relocations and focal mechanism solutions characteristics of 2012 Yiliang MS5.7 and MS5.6 earthquake sequence. Acta Seismologica Sinica, 37(6): 885-898. DOI: 10.11939/jass.2015.06.001
    Zhu Aiyu, Zhang Dongning, Jiang Changsheng. 2015: Numerical simulation of the relationship between the tectonic stress distribution and the historical strong earthquake activities of the middle-southern segment of eastern boundary of the Sichuan-Yunnan block. Acta Seismologica Sinica, 37(5): 762-773. DOI: 10.11939/jass.2015.05.005
    Zheng Jianchang, Wang Peng, Li Dongmei, Zhao Jinhua, Xu Changpeng. 2013: Tectonic stress field in Shandong region inferred from small earthquake focal mechanism solutions. Acta Seismologica Sinica, 35(6): 773-784. DOI: 10.3969/j.issn.0253-3782.2013.06.001
    2010: 震源参数对强地面震动模拟结果的影响
    . Acta Seismologica Sinica, 32(1): 51-59.
    2004: 华东地区地电阻率各向异性度的地震前兆异常特征初步研究. Acta Seismologica Sinica, 26(2): 223-227.
    LI RUIHAO, CHEN DONGSHENG, FU ZHAOZHU, WEI WANGSHENG, JIAN DAXIac. 1984: INVESTIGATION ON THE SPACE DISTRIBUTION CHARACTERISTIC OF TIDAL GRAVITY VECTOR IN CHINA. Acta Seismologica Sinica, 6(2): 223-240.

Catalog

    Get Citation
    PDF
    XML
    Article views (1089) PDF downloads (89) Cited by()
    Turn off MathJax
    Article Contents
    Abstract
    References
    Related Articles

    Supported by: Beijing Renhe Information Technology Co., Ltd.   

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return