Volume 28 Issue 2
Apr.  2022
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CHANG Zufeng, ZHANG Jianguo, SHEN Chongyang, et al., 2022. The 2012 Thabeikkjin (Myanmar) M 7.0 earthquake and its surface rupture characteristics. Journal of Geomechanics, 28 (2): 169-181. DOI: 10.12090/j.issn.1006-6616.2021161
Citation: CHANG Zufeng, ZHANG Jianguo, SHEN Chongyang, et al., 2022. The 2012 Thabeikkjin (Myanmar) M 7.0 earthquake and its surface rupture characteristics. Journal of Geomechanics, 28 (2): 169-181. DOI: 10.12090/j.issn.1006-6616.2021161

The 2012 Thabeikkjin (Myanmar) M 7.0 earthquake and its surface rupture characteristics

doi: 10.12090/j.issn.1006-6616.2021161
Funds:

the National Natural Science Foundation of China U2002211

the National Special Project for International Scientific and Technological Cooperatio 2015DFA21260

More Information
  • Received: 2021-11-27
  • Revised: 2022-01-20
  • Based on the first-hand data obtained from the field survey in terms of geology, landforms, earthquake ruins, this paper focuses on the activity behavior of the Sagaing fault, as well as the damaged buildings and seismic surface rupture zone generated by the 2012 earthquake. The Sagaing fault striking nearly NS is an active large-scale dextral strike-slip fault, with a horizontal slip rate of 18~20 mm/a. Many strong earthquakes more than M 7 have occurred along the Sagaing fault zone historically, and so far, there are still ruins of the earthquakes, such as the 1839 Innwa, Mandalay, M 8 earthquake, the 1930 Bago M 7.3 earthquake and the 1930 Phyu M 7.3 earthquake. The 2012 Thabeikkjin M 7.0 earthquake caused serious damage to pagodas, civil and other buildings, forming an at least 45 km-long seismic surface rupture with bank collapses, landslides, seismic faults and so on. The epicenter intensity of the earthquake is estimated to be IX. Under the dextral strike slip of the fault, the ground fissures show a trend of regular left-step en echelon, and the included angle with the strike of the Sagaing fault is generally 20°~30°; The large-scale ground fissures mostly show a "S" type. The regular left-step en echelon trend of ground fissures and the faulted ground features indicate that the seismic surface fracture are obviously characterized by dextral strike slip. The horizontal dextral displacements caused by the 2012 earthquake are generally between 40~90 cm, and the maximum reaches 102 cm. The surface rupture characteristics and the results of focal mechanism solutions show that the event is caused by the dextral strike-slip of the Sagaing fault.

     

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  • ACHARYYA S K, RAY K K, SENGUPTA S, 1991. The Naga hills and Andaman ophiolite belt, their setting, nature and collisional emplacement history[J]. Physics and Chemistry of the Earth, 18: 293-315. doi: 10.1016/0079-1946(91)90006-2
    AKILAN A, BALAJI S, PADHY S, et al., 2016. The plate kinematics of Burmese micro-plate relative to its surroundings[J]. Arabian Journal of Geosciences, 9(5): 333. doi: 10.1007/s12517-016-2345-6
    BERTRAND G, RANGIN C, MALUSKI H, et al., 2001. Diachronous cooling along the Mogok Metamorphic Belt (Shan scarp, Myanmar): the trace of the northward migration of the Indian syntaxis[J]. Journal of Asian Earth Sciences, 19(5): 649-659. doi: 10.1016/S1367-9120(00)00061-4
    CHANG Z F, CHANG H, ZANG Y, et al., 2016. Recent active features of Weixi-Qiaohou fault and its relationship with the Honghe fault[J]. Journal of Geomechanics, 22(3): 517-530. (in Chinese with English abstract) http://qikan.cqvip.com/Qikan/Article/Detail?id=671161799
    CHANG Z F, CHANG H, LI J L, et al., 2021. Holocene activity and Paleoearthquakes of the Weixi-Qiaohou fault[J]. Seismology and Geology, 43(4): 881-898. (in Chinese with English abstract)
    CURRAY J R, 2005. Tectonics and history of the Andaman Sea region[J]. Journal of Asian Earth Sciences, 25(1): 187-232. doi: 10.1016/j.jseaes.2004.09.001
    GUO S M, JI F J, XIANG H F, et al., 2001. The Honghe active fault zone[M]. Beijing: China Ocean Press. (in Chinese)
    HALL R, 2012. Late Jurassic-Cenozoic reconstructions of the Indonesian region and the Indian Ocean[J]. Tectonophysics, 570-571: 1-41. doi: 10.1016/j.tecto.2012.04.021
    HURUKAWA N, MAUNG P M, 2011. Two seismic gaps on the Sagaing Fault, Myanmar, derived from relocation of historical earthquakes since 1918[J]. Geophysical Research Letters, 38(1): L01310.
    KUNDU B, GAHALAUT V K, 2012. Earthquake occurrence processes in the Indo-Burmese wedge and Sagaing fault region[J]. Tectonophysics, 524-525: 135-146. doi: 10.1016/j.tecto.2011.12.031
    LE DAIN A Y, TAPPONNIER P, MOLNAR P, 1984. Active faulting and tectonics of Burma and surrounding regions[J]. Journal of Geophysical Research: Solid Earth, 89(B1): 453-472. doi: 10.1029/JB089iB01p00453
    LICHT A, FRANCE-LANORD C, REISBERG L, et al., 2013. A palaeo Tibet-Myanmar connection? Reconstructing the Late Eocene drainage system of central Myanmar using a multi-proxy approach[J]. Journal of the Geological Society, 170(6): 929-939. doi: 10.1144/jgs2012-126
    MAURIN T, MASSON F, RANGIN C, et al., 2010. First global positioning system results in northern Myanmar: constant and localized slip rate along the Sagaing fault[J]. Geology, 38(7): 591-594. doi: 10.1130/G30872.1
    MITCHELL A H G, 1993. Cretaceous-Cenozoic tectonic events in the Western Myanmar (Burma)-Assam region[J]. Journal of the Geological Society, 150(6): 1089-1102. doi: 10.1144/gsjgs.150.6.1089
    MITCHELL A, HTAY M T, HTUN K M, et al., 2007. Rock relationships in the Mogok metamorphic belt, Tatkon to Mandalay, central Myanmar[J]. Journal of Asian Earth Sciences, 29(5-6): 891-910. doi: 10.1016/j.jseaes.2006.05.009
    MORLEY C K, 2004. Nested strike-slip duplexes, and other evidence for Late Cretaceous-Palaeogene transpressional tectonics before and during India-Eurasia collision, in Thailand, Myanmar and Malaysia[J]. Journal of the Geological Society, 161(5): 799-812. doi: 10.1144/0016-764903-124
    NIELSEN C, CHAMOT-ROOKE N, RANGIN C, 2004. From partial to full strain partitioning along the Indo-Burmese hyper-oblique subduction[J]. Marine Geology, 209(1-4): 303-327. doi: 10.1016/j.margeo.2004.05.001
    RAJU K A K, RAMPRASAD T, RAO P S, et al., 2004. New insights into the tectonic evolution of the Andaman basin, northeast Indian Ocean[J]. Earth and Planetary Science Letters, 221(1-4): 145-162. doi: 10.1016/S0012-821X(04)00075-5
    RANGIN C, BERTRAND G, CHAMOT-ROOKE N, 2002. Tectonics of the India/Eurasia oblique collision in Myanmar: Evidences from superimposed Cenozoic ductile and brittle fabrics[C]//17th geological HKT workshop. Gangtok.
    RANGIN C, MAURIN T, MASSON F, 2013. Combined effects of Eurasia/Sunda oblique convergence and East-Tibetan crustal flow on the active tectonics of Burma[J]. Journal of Asian Earth Sciences, 76: 185-194. doi: 10.1016/j.jseaes.2013.05.018
    SEARLE M P, NOBLE S R, COTTLE J M, et al., 2007. Tectonic evolution of the Mogok metamorphic belt, Burma (Myanmar) constrained by U-Th-Pb dating of metamorphic and magmatic rocks[J]. Tectonics, 26(3): TC3014, doi: 10.1029/2006TC002083.
    SEARLE M P, MORLEY C K, 2011. Tectonic and thermal evolution of Thailand in the regional context of SE Asia[M]//RIDD M F, BARBER A J, CROW M J. The geology of Thailand. London: Geological Society of London: 539-572.
    State Administration for Market Regulation, Standardization Administration of the People's Republic of China, 2020. The Chinese seismic intensity scale: GB/T 17742-2020[S]. Beijing: Standards Press of China. (in Chinese)
    SOCQUET A, PUBELLIER M, 2005. Cenozoic deformation in western Yunnan (China-Myanmar border)[J]. Journal of Asian Earth Sciences, 24(4): 495-515. doi: 10.1016/j.jseaes.2004.03.006
    SOCQUET A, VIGNY C, CHAMOT-ROOKE N, et al., 2006. India and Sunda plates motion and deformation along their boundary in Myanmar determined by GPS[J]. Journal of Geophysical Research: Solid Earth, 111(B5): B05406.
    SONG F M, WANG Y P, YU W X, et al., 1998. The Xiaojiang active fault zone[M]. Beijing: Seismological Press: 16-168. (in Chinese)
    TSUTSUMI H, SATO T, 2009. Tectonic geomorphology of the Southernmost Sagaing Fault and surface rupture associated with the May 1930 Pegu (Bago) earthquake, Myanmar[J]. Bulletin of the Seismological Society of America, 99(4): 2155-2168. doi: 10.1785/0120080113
    TUN S T, WANG Y, KHAING S N, et al., 2014. Surface ruptures of the Mw 6.8 March 2011 Tarlay earthquake, Eastern Myanmar[J]. Bulletin of the Seismological Society of America, 104(6): 2915-2932. doi: 10.1785/0120130321
    VIGNY C, SOCQUET A, RANGIN C, et al., 2003. Present-day crustal deformation around Sagaing fault, Myanmar[J]. Journal of Geophysical Research: Solid Earth, 108(B11): 2533. doi: 10.1029/2002JB001999
    WALLACE R E, 1998. The geology of earthquakes[J]. Eos, Transactions American Geophysical Union, 79(9): 115.
    WANG Y, SIEH K, TUN S T, et al., 2014. Active tectonics and earthquake potential of the Myanmar region[J]. Journal of Geophysical Research: Solid Earth, 119(4): 3767-3822. doi: 10.1002/2013JB010762
    XIANG H F, HAN Z J, GUO S M, et al., 2004. Large-scale dextral strike-slip movement and asociated tectonic deformation along the red-river fault zone[J]. Seismology and Geology, 26(4): 597-610. (in Chinese with English abstract)
    常祖峰, 常昊, 臧阳, 等, 2016. 维西-乔后断裂新活动特征及其与红河断裂的关系[J]. 地质力学学报, 22(3): 517-530. doi: 10.3969/j.issn.1006-6616.2016.03.009
    常祖峰, 常昊, 李鉴林, 等, 2021. 维西-乔后断裂全新世活动与古地震[J]. 地震地质, 43(4): 881-898. doi: 10.3969/j.issn.0253-4967.2021.04.009
    国家市场监督管理总局, 国家标准化管理委员会, 2020. 中国地震烈度表: GB/T 17742-2020[S]. 北京: 中国标准出版社.
    虢顺民, 计凤桔, 向宏发, 等, 2001. 红河活动断裂带[M]. 北京: 海洋出版社.
    宋方敏, 汪一鹏, 俞维贤, 等, 1998. 小江活动断裂带[M]. 北京: 地震出版社: 16-168.
    向宏发, 韩竹军, 虢顺民, 等, 2004. 红河断裂带大型右旋走滑运动与伴生构造地貌变形[J]. 地震地质, 26(4): 597-610. doi: 10.3969/j.issn.0253-4967.2004.04.006
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