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Conference Paper

Imaging of Main Himalayan Thrust in central seismic gap using seismic interferometry

Authors

Ali T S,  Saneesh
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Gupta,  Sandeep
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Krishnavajjhala,  Sivaram
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Kumar,  Sudesh
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

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Citation

Ali T S, S., Gupta, S., Krishnavajjhala, S., Kumar, S. (2023): Imaging of Main Himalayan Thrust in central seismic gap using seismic interferometry, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-1378


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017224
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