ANALYSIS OF RECENT HORIZONTAL DEFORMATION IN THE
NORTHEASTERN MARGIN OF THE QINGHAI-TIBETAN PLATEAU
First Crust Monitoring and Application Center,CEA,Tianjin 300180
Abstract Resent horizontal deformation field in the northeastern margin of QinghaiTibetan plateau was analyzed,using GNSS observation data from 2011 to 2013.The results indicate that:The horizontal movement from 2011 to 2013 is obviously,with the rate of 15mm /a or lower;The direction of principal compressive strain is SENW,with the strain rate of ±40×10-9/a,The region of maximum main strain locates in the south of the study area in a belt;Dominent surface shrinkage indicates that the strain energy is accumulated in compressional way,the largest surface shrinkage value mainly distributed in the southeast corner;The regings with maximum shear strain rate are showed as belts,one of them is Qilian Tectonic Belt,another is in the south of the study area,parallelling with the Belt;Leftlateral area and dextral area distribute in belt.
Key words :
northeastern margin of Qinghai-Tibetan plateau
horizontal deformation
strain rate
horizontal rotation quantity
Received: 31 December 2013
Published: 28 May 2014
Cite this article:
Zhu Shuang,Yang Bo. ANALYSIS OF RECENT HORIZONTAL DEFORMATION IN THE
NORTHEASTERN MARGIN OF THE QINGHAI-TIBETAN PLATEAU[J]. jgg, 2014, 34(3): 81-85.
Zhu Shuang,Yang Bo. ANALYSIS OF RECENT HORIZONTAL DEFORMATION IN THE
NORTHEASTERN MARGIN OF THE QINGHAI-TIBETAN PLATEAU[J]. jgg, 2014, 34(3): 81-85.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2014/V34/I3/81
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