Characteristics of present-day tectonics movement of typical faults in northern Tianshan mountain deduced from GPS observation
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摘要: 借助分布在北天山地区最新GPS点位的运动观测资料, 利用GAMIT/GLOBK数据处理软件获取了北天山地区现今地壳的运动位移场． 以该位移场为基础, 利用弹性半空间位错理论, 估算了研究区内博罗科努—阿其克库杜克断裂和准噶尔盆地南缘断裂两条具有代表性的主要断裂的现今活动速率． 结果表明： 博罗科努—阿其克库杜克右旋走滑断裂东、 西两段滑移速率的差异性不明显, 1944年3月10日乌苏南MS7.2强震发生后, 该断层现今表现为震后微蠕滑运动, 东、 西两段滑动速率均在1—2 mm/a之间； 准噶尔盆地南缘断裂现今滑动速率为(5.6±1.0) mm/a．Abstract: Based on the latest multiple-epoch observation data of the GPS sites in northern Tianshan mountain, this paper obtained the present-day GPS sites velocity fields of the crustal movement in northern Tianshan mountain, using GAMIT/GLOBK processing software. Based on an elastic half-space dislocation model, slip rate of the two typical faults are constrained by GPS-derived crustal deformation displacement velocities of the northern Tianshan mountain. One fault is Boluokenu-Aqikekuduke (BoA for short) fault, and the other is southern margin fault of Junggar basin. The GPS results show that the slip rate difference between east and west segment of right-lateral strike-slip BoA fault is not obvious. The fault exhibted creeping slightly with micro-seismicity within 1—2 mm/a since MS7.2 south Wusu earthquake occurred on March 10, 1944. The present-day slip rate in southern margin fault of Junggar basin almost keeps (5.6±1.0) mm/a.
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图 1 北天山及其邻区GPS点位速度场分布图
黑色和红色虚线框分别为博阿断裂东、 西段速度场覆盖区域，绿色虚线框为准噶尔盆地南缘断裂速度场覆盖区域，蓝色实线为博阿断裂和准噶尔盆地南缘断裂
Figure 1. Distribution of GPS velocity fields in north Tianshan mountain and its adjacent areas
The black and red dashed rectangle zones delineate the velocity fields in eastern and western segments of BoA fault，respectively; green dashed rectangle zone delineates the velocity field in southern margin fault of Junggar basin. The blue lines represent the BoA fault and the southern margin fault of Junggar basin
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图 2 博阿断裂的GPS速度场剖面
(a)以(85.0°E，43.0°N)为中心，沿NE27°方向投影的GPS速度剖面;(b)以(80.8°E，46.0°N)为中心，沿NE38°方向投影的GPS速度剖面. 红色和绿色菱形分别为平行于博阿断裂东段和西段的GPS点位的速度； 蓝色三角形为垂直于博阿断裂的GPS点位的速度
Figure 2. The profiles of GPS velocity fields along the BoA fault
(a)GPS velocity profile along the NE27° direction with the centered-point(85.0°E，43.0°N);(b)GPS velocity profile along the NE38° direction with the centered-point(80.8°E，46.0°N). Red and green diamonds represent the velocities of GPS sites parallel to eastern and western segment of BoA fault， respectively. Blue triangle represents the velocities of GPS site perpendicular to BoA fault
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图 3 以(85.7°E，43.9°N)为中心，沿NE20°方向投影的准噶尔盆地南缘断裂的GPS速度场剖面
红色菱形和蓝色三角形分别代表平行于和垂直于准噶尔盆地南缘断裂的GPS点位的速度
Figure 3. The profile of GPS velocity of the southern margin fault of Junggar basin along the NE20° direction with the centered-point(85.7°E，43.9°N)
Red diamond and blue triangle represent the velocities of GPS sites parallel to and perpendicular to the southern margin fault of Junggar basin，respectively
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陈建波. 2008. 新疆地震构造特征研究[D]. 兰州: 中国地震局兰州地震研究所: 57-67. Chen J B. 2008.Study on Characteristics of Earthquake Tectonic in Xinjiang[D]. Lanzhou: Lanzhou Institute of Seismology, China Earthquake Administration: 57-67 (in Chinese).
邓起东, 冯先岳, 尤惠川. 1991.新疆独山子—安集海活动逆断裂-褶皱带的变形特征及其形成机制[G]//活动断裂研究(1). 北京: 地震出版社: 17-36. Deng Q D, Feng X Y, You H C. 1991. Characteristics and mechanism of deformation along the Dushanzi-Anjihai active reverse fault and fold zone, Xinjiang[G]//Research on Active Fault (1). Beijing: Seismological Press: 17-36 (in Chinese).
邓起东, 冯先岳, 张培震, 杨晓平, 徐锡伟, 彭斯震, 李军. 1999. 乌鲁木齐山前坳陷逆断裂-褶皱带及其形成机制[J]. 地学前缘, 6(4): 191-201. http://www.cnki.com.cn/Article/CJFDTOTAL-DXQY199904000.htm Deng Q D, Feng X Y, Zhang P Z, Yang X P, Xu X W, Peng S Z, Li J. 1999. Reverse fault and fold zone in the Urumqi range-front depression of the northern Tianshan and its genetic mechanism[J]. Earth Science Frontiers, 6(4): 191-201 (in Chinese). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DXQY199904000.htm
邓起东, 冯先岳, 张培震, 徐锡伟, 杨晓平, 彭斯震, 李军. 2000. 天山活动构造[M]. 北京: 地震出版社: 1-399. Deng Q D. Feng X Y, Zhang P Z, Xu X W, Yang X P, Peng S Z, Li J. 2000. Active Tectonics of the Chinese Tianshan Mountains[M]. Beijing: Seismological Press: 1-399 (in Chinese).
冯先岳. 1986. 天山的活动断层[J]. 中国地震, 2(2): 84-89. http://www.cnki.com.cn/Article/CJFDTOTAL-ZGZD198602014.htm Feng X Y. 1986. The active faults in Tianshan mountains[J]. Earthquake Research in China, 2(2): 84-89 (in Chinese).
郭良迁. 2000. 对中国大陆地壳水平变形的初步探索[J]. 中国地震, 16(2): 126-134. http://www.cnki.com.cn/Article/CJFDTOTAL-ZGZD200002003.htm Guo L Q. 2000. Preliminary study on the horizontal crustal deformation in Chinese mainland[J]. Earthquake Research in China, 16(2): 126-134 (in Chinese). http://en.cnki.com.cn/Article_en/CJFDTOTAL-ZGZD200002003.htm
李杰, 方伟, 朱治国, 刘代芹. 2006. 中部天山地壳活动的GPS初步分析[J]. 内陆地震, 20(3): 239-244. http://www.cnki.com.cn/Article/CJFDTOTAL-LLDZ200603006.htm Li J, Fang W, Zhu Z G, Liu D Q. 2006. Preliminary analysis on crust action by GPS in middle Tianshan mountain[J]. Inland Earthquake, 20(3): 239-244 (in Chinese). http://cn.bing.com/academic/profile?id=2358820630&encoded=0&v=paper_preview&mkt=zh-cn
李杰, 王晓强, 谭凯, 刘代芹, 帕尔哈提, 蒋靖祥, 方伟. 2010. 北天山现今活动构造的运动特征[J]. 大地测量与地球动力学, 30(6): 1-5. http://www.cnki.com.cn/Article/CJFDTOTAL-DKXB201006002.htm Li J, Wang X Q, Tan K, Liu D Q, Paerhati, Jiang J X, Fang W. 2010. Analysis of movement characters of present-day active tectonics of northern Tianshan region[J]. Journal of Geodesy and Geodynamics, 30(6): 1-5 (in Chinese). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DKXB201006002.htm
李杰, 王琪, 王晓强, 帕尔哈提, 刘代芹, 朱治国, 蒋靖祥. 2012. 南天山—帕米尔现代地壳形变特征与应变场分布[J]. 大地测量与地球动力学, 32(1): 1-4. http://www.cnki.com.cn/Article/CJFDTOTAL-DKXB201201000.htm Li J, Wang Q, Wang X Q, Paerhati, Liu D Q, Zhu Z G, Jiang J X. 2012. Characteristics of present crustal deformation and distribution of strain field in southern Tianshan-Pamir region[J]. Journal of Geodesy and Geodynamics, 32(1): 1-4 (in Chinese). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DKXB201201000.htm
李强, 游新兆, 杨少敏, 杜瑞林, 乔学军, 邹蓉, 王琪. 2012. 中国大陆构造变形高精度大密度GPS监测: 现今速度场[J]. 中国科学: 地球科学, 42(5): 629-632. http://www.cnki.com.cn/Article/CJFDTOTAL-JDXK201205002.htm Li Q, You X Z, Yang S M, Du R L, Qiao X J, Zou R, Wang Q. 2012. A precise velocity filed of tectonic deformation in China as inferred from intensive GPS observations[J]. Science China Earth Sciences, 55(5): 695-698. doi: 10.1007/s11430-012-4412-5
卢德源, 李秋生, 高锐, 李英康, 李德兴, 刘文, 张之英. 2000. 横跨天山的人工爆炸地震剖面[J]. 科学通报, 45(9): 982-988. http://www.cnki.com.cn/Article/CJFDTOTAL-KXTB200009016.htm Lu D Y, Li Q S, Gao R, Li Y K, Li D X, Liu W, Zhang Z Y. 2000. A deep seismic sounding profile across the Tianshan mountains[J]. Chinese Science Bulletin, 45(22): 2100-2107. doi: 10.1007/BF03183536
卢华复, 王胜利, 罗俊成, 舒良树, 桑洪, 朱文斌, 李毓丰, 金英爱. 2006. 塔里木盆地东部断裂系统及其构造演化[J]. 石油与天然气地质, 27(4): 433-441. http://www.cnki.com.cn/Article/CJFDTOTAL-SYYT200604001.htm Lu H F, Wang S L, Luo J C, Shu L S, Sang H, Zhu W B, Li Y F, Jin Y A. 2006. Fault systems and their tectonic evolution in the eastern Tarim basin[J]. Oil & Gas Geology, 27(4): 433-441 (in Chinese). http://en.cnki.com.cn/Article_en/CJFDTOTAL-SYYT200604001.htm
沈军, 杨晓平. 1998. 博洛科努断裂西北段古地震形变带初步研究[J]. 内陆地震, 12(3): 248-255. http://www.cnki.com.cn/Article/CJFDTOTAL-LLDZ199803011.htm Shen J, Yang X P. 1998. A preliminary study on the paleoearthquake rupture belt on the northwestern section of Bolohkenu fault[J]. Inland Earthquake, 12(3): 248-255 (in Chinese). http://en.cnki.com.cn/Article_en/CJFDTOTAL-LLDZ199803011.htm
沈军, 汪一鹏, 李莹甄, 姜慧, 向志勇. 2003. 中国新疆天山博阿断裂晚第四纪右旋走滑运动特征[J]. 地震地质, 25(2): 183-194. http://www.cnki.com.cn/Article/CJFDTOTAL-DZDZ200302001.htm Shen J, Wang Y P, Li Y Z, Jiang H, Xiang Z Y. 2003. Late Quaternary right-lateral strike-slip faulting along the Bolokenu-Aqikekuduke fault in Chinese Tian Shan[J]. Seismology and Geology, 25(2): 183-194 (in Chinese). http://cn.bing.com/academic/profile?id=2385614477&encoded=0&v=paper_preview&mkt=zh-cn
王琪, 丁国瑜, 乔学军, 王晓强, 游新兆. 2000. 天山现今地壳快速缩短与南北地块的相对运动[J]. 科学通报, 45(14): 1543-1547. http://www.cnki.com.cn/Article/CJFDTOTAL-KXTB200014016.htm Wang Q, Ding G Y, Qiao X J, Wang X Q, You X Z. 2000. Recent rapid shortening of crust across the Tianshan Mts. and relative motion of tectonic blocks in the north and south[J]. Chinese Science Bulletin, 45(21): 1995-1999. doi: 10.1007/BF02909695
王晓强, 张永岗, 海力·阿不都热依木, 李杰. 2002. 乌鲁木齐地区近期地壳水平形变初步研究[J]. 内陆地震, 16(2): 154-159. http://www.cnki.com.cn/Article/CJFDTOTAL-LLDZ200202011.htm Wang X Q, Zhang Y G, Haili·Abudureyimu, Li J. 2002. Preliminary study on recent horizontal crustal deformation in Urumqi area[J]. Inland Earthquake, 16(2): 154-159 (in Chinese). http://cn.bing.com/academic/profile?id=2390409353&encoded=0&v=paper_preview&mkt=zh-cn
王晓强, 李杰, 王琪, Zubovich A. 2005. 天山现今地壳运动的形变场分析[J]. 大地测量与地球动力学, 25(3): 63-68. http://www.cnki.com.cn/Article/CJFDTOTAL-DKXB200503012.htm Wang X Q, Li J, Wang Q, Zubovich A. 2005. Analysis of present-day crustal deformation of Tianshan[J]. Journal of Geodesy and Geodynamics, 25(3): 63-68 (in Chinese). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DKXB200503012.htm
王晓强, 李杰, Zubovich A, 王琪. 2007. 利用GPS形变资料研究天山及邻近地区地壳水平位移与应变特征[J]. 地震学报, 29(1): 31-37. http://www.dzxb.org/Magazine/Show?id=26400 Wang X Q, Li J, Zubovich A, Wang Q. 2007. Horizontal movement and strain characteristics in Tianshan and its adjacent region with GPS deformation data[J]. Acta Seismologica Sinica, 29(1): 31-37 (in Chinese). http://cn.bing.com/academic/profile?id=1997473371&encoded=0&v=paper_preview&mkt=zh-cn
杨少敏, 李杰, 王琪. 2008. GPS研究天山现今变形与断层活动[J]. 中国科学: D辑, 38(7): 872-880. http://www.cnki.com.cn/Article/CJFDTOTAL-JDXK200807009.htm Yang S M, Li J, Wang Q. 2008. The deformation pattern and fault rate in the Tianshan mountains inferred from GPS observations[J]. Science in China: Series D, 51(8): 1064-1080. doi: 10.1007/s11430-008-0090-8
杨晓平, 邓起东, 张培震, 冯先岳, 彭斯震. 1995. 利用阶地变形资料研究北天山吐谷鲁逆断裂-背斜带晚更新世以来的褶皱变形特征[G]//活动断裂研究(4). 北京: 地震出版社: 46-62. Yang X P, Deng Q D, Zhang P Z, Feng X Y, Peng S Z. 1995. Fold deformation along the Tugulu reverse fault-fold zone since Late Pleistocene, North Tianshan[G]//Research on Active Fault (4). Beijing: Seismological Press: 46-62 (in Chinese).
杨晓平, 沈军. 2000. 天山内部博罗可努断裂精河—阿拉山口段晚更新世以来的活动特征[J]. 地震地质, 22(3): 305-315. http://www.cnki.com.cn/Article/CJFDTOTAL-DZDZ200003011.htm Yang X P, Shen J. 2000. Late Quaternary activity of Jinghe-Alashankou section of the Boluokenu fault, interior Tian-shan[J]. Seismology and Geology, 22(3): 305-315 (in Chinese). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DZDZ200003011.htm
杨晓平, 邓起东, 张培震, 徐锡伟. 2008. 天山山前主要推覆构造区的地壳缩短[J]. 地震地质, 30(1): 111-131. http://www.cnki.com.cn/Article/CJFDTOTAL-DZDZ200801008.htm Yang X P, Deng Q D, Zhang P Z, Xu X W. 2008. Crustal shortening of major nappe structures on the front margins of the Tianshan[J]. Seismology and Geology, 30(1): 111-131 (in Chinese). http://cn.bing.com/academic/profile?id=2361466684&encoded=0&v=paper_preview&mkt=zh-cn
张培震, 邓起东, 徐锡伟. 1993. 新疆玛纳斯褶皱-逆断裂带晚第四纪变形和地壳缩短[G]//活动断裂研究(3). 北京: 地震出版社: 18-32. Zhang P Z, Deng Q D, Xu X W. 1993. Deformation and crustal shortening of the Manas thrust and fold belt since Late Quaternary in northern Tianshan mountains[G]//Research on Active Fault (3). Beijing: Seismological Press: 18-32 (in Chinese).
张培震, 邓起东, 杨晓平, 彭斯震, 徐锡伟, 冯先岳. 1996. 天山的晚新生代构造变形及其地球动力学问题[J]. 中国地震, 12(2): 127-140. http://www.cnki.com.cn/Article/CJFDTOTAL-ZGZD199602002.htm Zhang P Z, Deng Q D, Yang X P, Peng S Z, Xu X W, Feng X Y. 1996. Late Cenozoic tectonic deformation and mechanism along the Tianshan mountain, northwestern China[J]. Earthquake Research in China, 12(2): 127-140 (in Chinese). http://en.cnki.com.cn/Article_en/CJFDTOTAL-ZGZD199602002.htm
张培震, 王敏, 甘卫军, 邓起东. 2003. GPS观测的活动断裂滑动速率及其对现今大陆动力作用的制约[J]. 地学前缘, 10(特刊): 81-92. http://www.cnki.com.cn/Article/CJFDTOTAL-DXQY2003S1013.htm Zhang P Z, Wang M, Gan W J, Deng Q D. 2003. Slip rates along major active faults from GPS measurements and constraints on contemporary continental tectonics[J]. Earth Science Frontiers, 10(Suppl): 81-92 (in Chinese). http://cn.bing.com/academic/profile?id=2368425691&encoded=0&v=paper_preview&mkt=zh-cn
周伟新, 杨主恩, 孙君秀, 赵瑞斌. 2003. 1906年玛纳斯7.7级地震孕震过程的数值模拟研究[J]. 地震地质, 25(4): 609-616. http://www.cnki.com.cn/Article/CJFDTOTAL-DZDZ200304008.htm Zhou W X, Yang Z E, Sun J X, Zhao R B. 2003. Numerical modeling of the generation process of the 1906 Manas MS7.7 earthquake[J]. Seismology and Geology, 25(4): 609-616 (in Chinese).
Avouac J P, Tapponnier P, Bai M, You H, Wang G. 1993. Active thrusting and folding along the northern Tien Shan and Late Cenozoic rotation of the Tarim relative to Dzungaria and Kazakhstan[J]. J Geophys Res, 98(B4): 6755-6804. doi: 10.1029/92JB01963
Burchfiel B C, Brown E T, Deng Q D, Feng X Y, Li J, Molnar P, Shi J B, Wu Z M, You H C. 1999. Crustal shortening on the margins of the Tien Shan, Xinjiang, China[J]. Int Geo Rev, 41(8): 665-700. doi: 10.1080/00206819909465164
Burtman V S, Skobelev S F, Molnar P. 1996. Late Cenozoic slip on the Talas-Ferghana fault, the Tien Shan, central Asia[J]. Geol Soc Am Bull, 108(8): 1004-1021. doi: 10.1130/0016-7606(1996)108<1004:LCSOTT>2.3.CO;2
Campbell G E, Walker R T, Abdrakhmatov K, Schwenninger J L, Jackson J, Elliott J R, Copley A. 2013. The Dzhungarian fault: Late Quaternary tectonics and slip rate of a major right-lateral strike-slip fault in the northern Tien Shan region[J]. J Geophys Res, 118(10): 5681-5698. doi: 10.1002/jgrb.50367
Freund L B, Barnett D M. 1976. A two-dimensional analysis of surface deformation due to dip-slip faulting[J]. Bull Seismol Soc Am, 66(3): 667-675. http://cn.bing.com/academic/profile?id=1791763016&encoded=0&v=paper_preview&mkt=zh-cn
Freymueller J T, Murray M H, Segall P, Castillo D. 1999. Kinematics of the Pacific-North America Plate boundary zone, northern California[J]. J Geophys Res, 104(B4): 7419-7441. doi: 10.1029/1998JB900118
Kogan M G, Steblov G M, King R W, Herring T A, Frolov D I, Egorov S G, Levin V Y, Lerner-Lam A, Jones A.2000. Geodetic constraints on the relative motion and rigidity of Eurasia and North America[J]. Geophys Res Lett, 27(14): 2041-2044. doi: 10.1029/2000GL011422
Molnar P, Deng Q D. 1984. Faulting associated with large earthquakes and average rate of deformation in central and eastern Asia[J]. J Geophys Res, 89(B7): 6203-6227. doi: 10.1029/JB089iB07p06203
Savage J C, Burford R O. 1973. Geodetic determination of relative plate motion in central California[J]. J Geophys Res, 78(5): 832-845. doi: 10.1029/JB078i005p00832
Tapponnier P, Molnar P. 1979. Active faulting and Cenozoic tectonics of the Tien Shan, Mongolia, and Baykal regions[J]. J Geophys Res, 84(B7): 3425-3459. doi: 10.1029/JB084iB07p03425
Yin A, Nie S, Craig P, Harrison T M, Ryerson F J, Qian X L, Yang G. 1998. Late Cenozoic tectonic evolution of the southern Chinese Tian Shan[J]. Tectonics, 17(1): 1-27. doi: 10.1029/97TC03140
Zubovich A V, Wang X, Scherba Y G, Schelochkov G G, Reilinger R, Reigber C, Mosienko O I, Molnar P, Michaljow W, Makarov V I. 2010. GPS velocity field for the Tien Shan and surrounding regions[J]. Tectonics, 29: TC6014. http://cn.bing.com/academic/profile?id=1596365679&encoded=0&v=paper_preview&mkt=zh-cn
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