Feng, W., Xu, L., and Li, Z. (2010) Fault parameters of the October 2008 Damxung Mw6.3 earthquake from InSAR inversion and its tectonic implication. Diqiu-Wuli-Xuebao Shuangyuekan: Chinese Journal of Geophysics , 53 (5). pp. 1134-1142. ISSN 0001-5733 (doi:10.3969/j.issn.0001-5733.2010.05.014 )
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A Mw6.3 earthquake occurred in Damxung, Tibet, on October 6th, 2008. We determined the fault parameters using a descending coseismic interferogram from ENVISAT ASAR images. In addition， we examined the uncertainties in the InSAR-derived source parameters using the variance-covariance matrix of InSAR data points estimated with a 1-D semivariogram function. The inverted results showed that the earthquake occurred on a secondary fault in the eastern margin of the Yangyi basin, with a strike of 178°, a dip of 58° and dipping to west, which was normal faulting with a little of right-lateral strike slipping. It also appeared that the impact of the measurement errors on the uncertainties in InSAR derived source parameters was limited. This earthquake led to a subsidence of at least 30 cm at the epicenter, implying the Yangyi basin in the northern Yadong-Gulu Rift Belt was subsiding probably.
|Keywords:||Damxung Earthquake;InSAR inversion; Uncertainty;Yadong-Gulu rift belt; geodetic inversion; InSAR|
|Glasgow Author(s):||Li, Dr Zhenhong|
|Authors:||Feng, W., Xu, L., and Li, Z.|
|Subjects:||Q Science > QE Geology|
G Geography. Anthropology. Recreation > GB Physical geography
T Technology > TA Engineering (General). Civil engineering (General)
|College/School:||College of Science and Engineering > School of Geographical and Earth Sciences|
|Journal Name:||Diqiu-Wuli-Xuebao Shuangyuekan: Chinese Journal of Geophysics|