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Abstract:
The Main Himalayan Thrust fault (MHT) marks the boundary of the Indian plate beneath the Himalaya and southern Tibet. As the Indian plate moves, stress builds up on the MHT, which leads to the occurrence of earthquakes on or along the MHT. Therefore, it is crucial to comprehend the geometry of MHT in different segments of Himalaya and how it varies along the arc. The central seismic gap is one of the most significant segments of the Himalaya, and is regarded as a potential region for proposed future great earthquake. We attempted to constrain the geometry of MHT, between the Main Frontal Thrust (MFT) and Southern Tibetan Detachment (STD), in the central seismic gap. We have applied the seismic interferometry technique to the earthquake waveforms recorded from over 100 seismic stations spread across the area. The results show that, in general, the MHT has flat-ramp-flat geometry. However, the position and geometry of the mid-crustal ramp varies within the central seismic gap
