北天山现今活动构造的运动特征
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摘要
利用1998—2008年北天山地区近30个站的GPS观测资料,获取了研究区内现今地壳运动速度场和主要断层的活动速率。GPS运动速率表明:北天山地区的南北向地壳缩短表现为非均匀性,速度吸收的差异性表现出与该地区地震发生频度有一定的相关性;GPS测量得到的现今断裂总体活动特征与地质学推断结果一致,但量值存在差异。
Using GPS measurements in the Northern Tienshan Mountains from 1998 to 2008,we obtain the present-day crustal movement velocity field for more than 30 sites,at the same time,estimate active rates on the major faults in the studied region.The GPS velocity results show that there is non-uniformity for N-S direction crustal shortening of northern Tianshan area and it shows the correlation between the differences of the absorption rate and frequency of the earthquake occurring.The active faults movement characters derived from the GPS measurement results are consistent with the geological results,but there are differences in the value.
Using GPS measurements in the Northern Tienshan Mountains from 1998 to 2008,we obtain the present-day crustal movement velocity field for more than 30 sites,at the same time,estimate active rates on the major faults in the studied region.The GPS velocity results show that there is non-uniformity for N-S direction crustal shortening of northern Tianshan area and it shows the correlation between the differences of the absorption rate and frequency of the earthquake occurring.The active faults movement characters derived from the GPS measurement results are consistent with the geological results,but there are differences in the value.
引文
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2王琪,等.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,2000,45(14):1 543-1 547.(Wang Qi,etal.Recent rapid shortening of crust across the Tianshan Mts.and relative motion of tectonic blocks in the North and South[J].Chinese Science Bulletin,2000,45(14):1 543-1 547)
3王琪,等.用GPS研究南天山(伽师)地区现今地壳变形[J].地震学报,2000,22(3):263-270.(Wang Qi,et al.Research on present crustal deformation in the southernTianshan(Jiashi),China by GPS geodesy[J].Acta Seis-mologica Sinica,2000,22(3):263-270)
4 Reigber C,et al.Newspace geodetic constrains on the distri-bution of deformation in Central Asia[J].Earth Planet SciLett.,2001,191:157-165.
5杨少敏,等.GPS研究天山现今变形与断层活动[J].中国科学(D辑),2008,38(7):872-880.(Yang Shaomin,etal.The deformation pattern and faulting rate in the TianshanMountains inferred from GPS observations[J].Sci China SerD-Earth Sci.,2008,51(8):1 064-1 080)
6杨晓平,沈军.天山内部博罗科努断裂精河-阿拉山口段晚更新世以来的活动特征[J].地震地质,2000,22(3):305-315.(Yang Xiaoping and Shen Jun.Late Quaternaryactivity of Jinghe-Alashankou section of the Boluokenufault interior Tianshan[J].Seismology and Geology,2000,22(3):305-315)
7张培震,等.盲断裂、“褶皱地震”与1906年玛纳斯地震[J].地震地质,1994,16(3):193-204.(Zhang Peizhen,et al.Blind thrust,folding earthquake and the 1906 ManasEarthquake,Xinjiang[J].Seismolgy and Geology,1994,16(3):193-204)
8杨晓平,等.天山山前主要推覆构造区的地壳缩短[J].地震地质,2008,30(1):111-131.(Yang Xiaoping,et al.Crustal shortening of Major nappe structures on the frontmargins of the Tianshan[J].Seimology and Geology,2008,30(1):111-131)
9邓起东,等.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,1999,6(4):191-201.(Deng Qi-dong,et al.Reverse fault and fold zone in the Urumqi rangefront depression of the northern Tianshan and its geneticmechanism[J].Earth Science Frontiers,1999,6(4):191-201)
10 Avouac J,et al.Active faulting and folding in the northernTianshan and rotation of Tarim relative to Dzungarian andKazakhstan[J].J Geophys Res.,1993,98:6 755-6 804.
11 Molnar P and Deng Q.Faulting associated with large earth-quakes and the average rate of deformation in central andeastern Asia[J].J Geophys Res.,1984,89:6 203-6 227.
12 Burtman P.Geological and geophysical evidence for deepsubduction of continental crust beneath the Pamir[R].Ge-ological Society of America Special Paper 1998,281:1-76.
13张培震,等.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,2003,(特刊):81-92.(Zhang Peizhen,et al.Slip rates along major activefaults from GPS measurements and constraints on contempo-rary continental tectonics[J].Earth Science Frontiers,2003,(supp.):81-92)
14郭良迁.对中国大陆地壳水平变形的初步探索[J].中国地震,2000,16(2):126-134.(Guo Liangqian.Prelimina-ry study on the horizontal crustal deformation in Chinesemainland[J].Earthquake Research in China,2000,16(2):126-134)
15刘本培,等.西南天山构造格局与演化[M].武汉:中国地质大学出版社,1996.(Liu benpei,et al.Tectonicframework and evolution in southwest Tianshan mountains[M].Wuhan:China University of Geosciences Press,1996)
16万天丰.中国大地构造学纲要[M].北京:地质出版社,2004.(Wan Tianfeng.Geotectonics in China[M].Beijing:Geological Publishing House,2004)
17沈军,等.中国新疆天山博阿断裂晚第四纪右旋走滑活动特征[J].地震地质,2003,25(2):183-194.(ShenJun,et al.Late Quaternary right lateral strike-slip faultingalong the bolokenu-aqikekuduke fault in Chinese Tianshan[J].Seismology and Geology,2003,25(2))183-194)
18王晓强,等.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,2005,(3):63-68.(Wang Xiao-qiang,et al.Analysis of present-day crustal deformation ofTianshan[J].Journal of Geodesy and Geodynamics,2005,(3):63-68)
2王琪,等.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,2000,45(14):1 543-1 547.(Wang Qi,etal.Recent rapid shortening of crust across the Tianshan Mts.and relative motion of tectonic blocks in the North and South[J].Chinese Science Bulletin,2000,45(14):1 543-1 547)
3王琪,等.用GPS研究南天山(伽师)地区现今地壳变形[J].地震学报,2000,22(3):263-270.(Wang Qi,et al.Research on present crustal deformation in the southernTianshan(Jiashi),China by GPS geodesy[J].Acta Seis-mologica Sinica,2000,22(3):263-270)
4 Reigber C,et al.Newspace geodetic constrains on the distri-bution of deformation in Central Asia[J].Earth Planet SciLett.,2001,191:157-165.
5杨少敏,等.GPS研究天山现今变形与断层活动[J].中国科学(D辑),2008,38(7):872-880.(Yang Shaomin,etal.The deformation pattern and faulting rate in the TianshanMountains inferred from GPS observations[J].Sci China SerD-Earth Sci.,2008,51(8):1 064-1 080)
6杨晓平,沈军.天山内部博罗科努断裂精河-阿拉山口段晚更新世以来的活动特征[J].地震地质,2000,22(3):305-315.(Yang Xiaoping and Shen Jun.Late Quaternaryactivity of Jinghe-Alashankou section of the Boluokenufault interior Tianshan[J].Seismology and Geology,2000,22(3):305-315)
7张培震,等.盲断裂、“褶皱地震”与1906年玛纳斯地震[J].地震地质,1994,16(3):193-204.(Zhang Peizhen,et al.Blind thrust,folding earthquake and the 1906 ManasEarthquake,Xinjiang[J].Seismolgy and Geology,1994,16(3):193-204)
8杨晓平,等.天山山前主要推覆构造区的地壳缩短[J].地震地质,2008,30(1):111-131.(Yang Xiaoping,et al.Crustal shortening of Major nappe structures on the frontmargins of the Tianshan[J].Seimology and Geology,2008,30(1):111-131)
9邓起东,等.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,1999,6(4):191-201.(Deng Qi-dong,et al.Reverse fault and fold zone in the Urumqi rangefront depression of the northern Tianshan and its geneticmechanism[J].Earth Science Frontiers,1999,6(4):191-201)
10 Avouac J,et al.Active faulting and folding in the northernTianshan and rotation of Tarim relative to Dzungarian andKazakhstan[J].J Geophys Res.,1993,98:6 755-6 804.
11 Molnar P and Deng Q.Faulting associated with large earth-quakes and the average rate of deformation in central andeastern Asia[J].J Geophys Res.,1984,89:6 203-6 227.
12 Burtman P.Geological and geophysical evidence for deepsubduction of continental crust beneath the Pamir[R].Ge-ological Society of America Special Paper 1998,281:1-76.
13张培震,等.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,2003,(特刊):81-92.(Zhang Peizhen,et al.Slip rates along major activefaults from GPS measurements and constraints on contempo-rary continental tectonics[J].Earth Science Frontiers,2003,(supp.):81-92)
14郭良迁.对中国大陆地壳水平变形的初步探索[J].中国地震,2000,16(2):126-134.(Guo Liangqian.Prelimina-ry study on the horizontal crustal deformation in Chinesemainland[J].Earthquake Research in China,2000,16(2):126-134)
15刘本培,等.西南天山构造格局与演化[M].武汉:中国地质大学出版社,1996.(Liu benpei,et al.Tectonicframework and evolution in southwest Tianshan mountains[M].Wuhan:China University of Geosciences Press,1996)
16万天丰.中国大地构造学纲要[M].北京:地质出版社,2004.(Wan Tianfeng.Geotectonics in China[M].Beijing:Geological Publishing House,2004)
17沈军,等.中国新疆天山博阿断裂晚第四纪右旋走滑活动特征[J].地震地质,2003,25(2):183-194.(ShenJun,et al.Late Quaternary right lateral strike-slip faultingalong the bolokenu-aqikekuduke fault in Chinese Tianshan[J].Seismology and Geology,2003,25(2))183-194)
18王晓强,等.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,2005,(3):63-68.(Wang Xiao-qiang,et al.Analysis of present-day crustal deformation ofTianshan[J].Journal of Geodesy and Geodynamics,2005,(3):63-68)
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