Study on the Deformation Characters of Yadong-Gulu Rift by InSAR
Abstract The Yadong-Gulu rift in the Tibet plateau plays a very important role intectonic evolution in the Cenozoic Era. Its examination helps to understand the role central and southern Tibet rifts played in the evolution of the Tibet Plateau in the Quaternary. Based on 26 ENVISAT synthetic aperture radar(SAR) scenes during the period from 2003 to 2008, we take the SBAS-InSAR technology to calculate the time-dependent LOS velocity field of Yadong-Gulu rift and the surrounding region, in which the errors induced by terrain, orbit data and the atmosphere model have been detected. The results of the slip rate, which is inverted by the LOS direction deformation, show that the southern and northern portionsof the rift have a similar dip slip rate of about 1 mm/a. The locking depth is 31km in the southern section and 22 km in the northern section. The inversion of fault dip angle in the southern and northern sections is 52° and 40° respectively.
Key words :
Yadong-Gulu rift
SBAS-InSAR
slip rate
locking depth
Tibetan plateau
Cite this article:
YU Pengfei,JIA Zhige,XIONG Wei et al. Study on the Deformation Characters of Yadong-Gulu Rift by InSAR[J]. jgg, 2017, 37(6): 594-598.
YU Pengfei,JIA Zhige,XIONG Wei et al. Study on the Deformation Characters of Yadong-Gulu Rift by InSAR[J]. jgg, 2017, 37(6): 594-598.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2017/V37/I6/594
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