DOI: 10.5176/2251-3353_GEOS13.21
Authors: Kutubuddin, Malay Mukul and Sridevi Jade
Abstract: We present a dislocation model for the strike-slip earthquake that occurred on 18 September 2011 (Mw 6.9) at 18.10 IST (12.40 UTC) near the border of Nepal and Sikkim (India) and was centered within the Kanchenjunga conservation area. We fit co-seismic horizontal displacements resulting from Global Navigation Satellite System (GNSS) measurements in May-2012 by means of a dislocation model. We used 2007 to 2009 high precision GNSS data to compute pre-seismic positions and velocities of the GNSS stations and compared that with the May- 2012 GNSS data to estimate the co-seismic displacements. Our best fit model consists of a strike-slip fault having length 102.2 km and width 35.78 km with dextral slip 19.52 cm which corresponds to the NP-1 of the USGS Centroid Moment Solution of the Sikkim earthquake.
Keywords: Global Navigation Satellite System, Sikkim earthquake, Dislocation modelling
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