期刊文献+

青藏高原班公—怒江缝合带现今运动状况的GPS观测研究 被引量:8

Present-Day Movement of Bangong Co-Nujiang Suture Zone,Tibetan Plateau,Inferred from GPS Measurements
下载PDF
导出
摘要 利用青藏高原改则地区一条跨越班公—怒江缝合带的10站GPS剖面在2007—2009年的3期流动观测资料,采用自洽的统一参考框架方法分析研究了改则地区的现今地壳差异运动,得出该区域现今地壳应变率以南北向挤压为主,量值达(104.0±28.6)×10-9/a,同时兼有东西向拉张,量值约为(25.4±17.7)×10-9/a。利用半无限弹性空间的断裂位错模型和GPS速度矢量的约束,反演获得班公-怒江缝合带在该地区(即改则—洞错断裂)的现今运动以右旋走滑为主,走滑速率约为(7.4±0.8)mm/a。 Based on the measurements of a GPS profile,which is composed of 10 GPS stations across the Bangong Co-Nujiang suture zone around Gaize area of the Tibetan Plateau,observed 3 times from 2007 to 2009 in campaign mode,we investigated the present-day crustal deformation of the Gaize area,and revealed that the principal strains of the region are north-south compression and east-west extension with the rates of(104.0±28.6)×10^-9/a and(25.4±17.7)×10^-9/a,respectively.Using the half-space elastic dislocation model and constrained with the GPS velocity vectors of the GPS profile,we inversed the present-day movement of the Bangong Co-Nujiang suture zone at Gaize area(known as Gaize-Dongcuo fault)is right-lateral with a rate of about(7.4±0.8)mm/a.
出处 《吉林大学学报(地球科学版)》 EI CAS CSCD 北大核心 2010年第6期1496-1502,共7页 Journal of Jilin University:Earth Science Edition
基金 国家'973'计划项目(2008CB425703) 国家自然科学基金项目(40674055)
关键词 班公-怒江缝合带 GPS 地壳变形 运动速率 Bangong Co-Nujiang suture zone; GPS; crustal deformation; movement rate
  • 相关文献

参考文献27

  • 1马宗晋,张家声,汪一鹏.青藏高原三维变形运动学的时段划分和新构造分区[J].地质学报,1998,72(3):211-227. 被引量:104
  • 2Tapponnier P,Peltzer G,Le Dain A Y,et al.Propagating extrusion tectonic in Asia:new insight from simple experiments with plasticine[J].Geology,1982,10:611-616.
  • 3Peltzer G,Tapponnier P,Armijo R.Magnitude of Late Quaternary left lateral displacements along the northern edge of Tibet[J].Science,1989,246:1283-1289.
  • 4Avouac J P,Tapponnier P.Kinematic model of active deformation in Central Asia[J].Geophys Res Lett,1993,20:895-898.
  • 5England P,Molnar P.The field of crustal velocity in Asia calculated from Quaternary rates of slip on faults[J].Geophys J Int,1997,130:551-582.
  • 6Shen Z-K,Wang M,Li Y,et al.Crustal deformation along the Altyn Tagh fault system,Western China,from GPS[J].J Geophys Res,2001,106:30607-30621.
  • 7Yin A,Rumelhart P E,Butler R,et al.Tectonic history of the Altyn Tagh fault system in northern Tibet inferred from Cenozoic sedimentation[J].GSA Bulletin,2002,114:1257-1295.
  • 8Ding G Y,Chen J,Tian Q J,et al.Active faults and magnitudes of left-lateral displacement along the northern margin of the Tibetan Plateau[J].Tectonophysics,2004,380:243-260.
  • 9Kirby E,Harkins N,Wang E Q,et al.Slip rate gradients along the eastern Kunlun fault[J].Tectonics,2007,26,TC2010-TC2025.
  • 10Gan W,Zhang P,Shen Z K,et al.Present-day crustal motion within the Tibetan Plateau inferred from GPS measurements[J].J Geophys Res,2007,112,B08416-B08429.

二级参考文献222

共引文献449

同被引文献194

引证文献8

二级引证文献45

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部