Coseismic slip distribution of the 24 March 2011 Tarlay (Myanmar) mw 6.8 earthquake from ALOS PALSAR interferometry

doi:10.1785/0120120365

CORC > 北京大学 > 地球与空间科学学院

	Coseismic slip distribution of the 24 March 2011 Tarlay (Myanmar) mw 6.8 earthquake from ALOS PALSAR interferometry
	Sun, Jianbao ; Shen, Zheng-Kang ; B??rgmann, Roland ; Xu, Xiwei
刊名	bulletin of the seismological society of america
	2013
DOI	10.1785/0120120365
英文摘要	We investigate coseismic deformation of the 24 March 2011 Mw 6.8 Tarlay, Myanmar, earthquake using ALOS PALSAR data from both descending and ascending passes. Using high-quality synthetic aperture radar interferograms and amplitude-offset images, the nearly linear surface rupture is well traced along the western end of the Nam Ma fault and strikes ~69??. From both descending and ascending pass Interferometric Synthetic Aperture Radar data and a rigorous maximum a posteriori probabilistic inversion method, we infer that the event involved mostly a pure leftlateral strike-slip rupture with near-vertical geometry. Our one-segment model shows that the maximum slip of ~4:1 m occurred at ~4 km depth, much larger than the slip at the surface. Both interferograms also reveal a small segment to the east of the main rupture, in a densely populated farming area. Our inversion of a two-segment model shows a similar slip distribution on the main fault, in addition to ~0:1-0:3 m left-lateral slip with normal component on a 58?? north-dipping segment. The total seismic moment from the two-segment model is 1:95 ?? 1019 N·m, equivalent to an Mw 6.79 earthquake, which is comparable to the U.S. Geological Survey seismic inversion estimate of 2:10 ?? 1019 N·m (Mw 6.84). The earthquake occurred within a group of eastnortheast-striking left-lateral strike-slip faults near the Myanmar-Laos border, which are seismically active and reflect a system of actively clockwise rotating blocks.; EI; 0; 5; 2928-2936; 103
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/410465]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Sun, Jianbao,Shen, Zheng-Kang,B??rgmann, Roland,et al. Coseismic slip distribution of the 24 March 2011 Tarlay (Myanmar) mw 6.8 earthquake from ALOS PALSAR interferometry[J]. bulletin of the seismological society of america,2013.
APA	Sun, Jianbao,Shen, Zheng-Kang,B??rgmann, Roland,&Xu, Xiwei.(2013).Coseismic slip distribution of the 24 March 2011 Tarlay (Myanmar) mw 6.8 earthquake from ALOS PALSAR interferometry.bulletin of the seismological society of america.
MLA	Sun, Jianbao,et al."Coseismic slip distribution of the 24 March 2011 Tarlay (Myanmar) mw 6.8 earthquake from ALOS PALSAR interferometry".bulletin of the seismological society of america (2013).