Geomorphology reveals active decollement geometry in the central Himalayan seismic gap
Kristin D Morell, Mike Sandiford, CP Rajendran, Kusala Rajendran, Abaz Alimanovic, David Fink, Jaishri Sanwal
Lithosphere | GEOLOGICAL SOC AMER, INC | Published : 2015
The-700-km-long "central seismic gap" is the most prominent segment of the Himalayan front not to have ruptured in a major earthquake during the last 200-500 yr. This prolonged seismic quiescence has led to the proposition that this region, with a population >10 million, is overdue for a great earthquake. Despite the region's recognized seismic risk, the geometry of faults likely to host large earthquakes remains poorly understood. Here, we place new constraints on the spatial distribution of rock uplift within the western-400 km of the central seismic gap using topographic and river profile analyses together with basinwide erosion rate estimates from cosmogenic Be. The data sets show a dis..View full abstract
This study was funded primarily by the Australia-India Strategic Research Fund (AISRF) and the Australian Research Council (ARC). Thanks to Kelin Whipple and an anonymous reviewer for their comments, and to Duane Devecchio and Christine Regalla for their input on an early version of this manuscript. We also thank Eric Kirby for editorial handling.