Articles | Volume 11, issue 6
Research article
08 Dec 2020
Research article |  | 08 Dec 2020

A 2600-year-long paleoseismic record for the Himalayan Main Frontal Thrust (western Bhutan)

Romain Le Roux-Mallouf, Matthieu Ferry, Rodolphe Cattin, Jean-François Ritz, Dowchu Drukpa, and Phuntsho Pelgay

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Topographic disequilibrium, landscape dynamics and active tectonics: an example from the Bhutan Himalaya
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Cited articles

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Avouac, J.-P., Meng, L., Wei, S., Wang, T., and Ampuero J.-P.: Lower edge of locked Main Himalayan Thrust unzipped by the 2015 Gorkha earthquake, Nat. Geosci., 9, 708–711,, 2015. 
Berthet, T., Ritz, J. F., Ferry, M., Pelgay, P., Cattin, R., Drukpa, D., Braucher, R., and Hetényi, G.: Active tectonics of the eastern Himalaya: New constraints from the first tectonic geomorphology study in southern Bhutan, Geology, 42, 427–430,, 2014. 
Short summary
The chronology of historical earthquakes (from historical documents and geological evidence) is still poorly constrained in the western Himalaya. We carried out a field investigation in SW Bhutan along the India–Bhutan border. Our analysis reveals that Bhutan has experienced at least five great earthquakes during the last 2600 years. Coseismic slip values along the Main Himalayan Thrust for most events reach at least 13 m and suggest that associated magnitudes are in the range of Mw 8.5–9.