Investigation of lithospheric structure in Mongolia fault: InSAR observations and modelling

Zhang, Jing Investigation of lithospheric structure in Mongolia fault: InSAR observations and modelling. Master of Philosophy thesis, University of Liverpool.

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Abstract

Western Mongolia is a seismically active intracontinental region, with ongoing tectonic activity and widespread volcanism attributed to the India-Eurasia collision. During the last century, four M > 8 earthquakes have occurred in Mongolia, which provides opportunities to study how continents deform. The 1957 Gobi-Altai earthquake is one of the largest magnitude earthquakes. The rupture pattern associated with this earthquake is complex, involving left-lateral strike-slip and reverse dip-slip faulting on several distinct geological structures in a 264 × 40 km wide zone. To understand the relationship between observed postseismic surface deformation and the rheological structure of the upper lithosphere, Interferometric Synthetic Aperture Radar (InSAR) data was used to study the 1957 earthquake in southwest of Mongolia and model the late postseismic deformation. SAR data were acquired from the ERS1/2 and Envisat from 1996 to 2010. Using the Repeat Orbit Interferometry Package (ROI_PAC), 124 postseismic interferograms have been produced on four adjacent tracks. Stacking these interferograms yields a maximum InSAR line-of-sight deformation rate along the fault of

Item Type:	Thesis (Master of Philosophy)
Additional Information:	Date: 2014-10-20 (completed)
Subjects:	?? G1 ?? ?? GB ?? ?? GE ??
Depositing User:	Symplectic Admin
Date Deposited:	10 Sep 2015 14:42
Last Modified:	17 Dec 2022 01:43
DOI:	10.17638/02008226
URI:	https://livrepository.liverpool.ac.uk/id/eprint/2008226