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Evidence for a Great Medieval Earthquake (A.D. 1100) in Central Himalaya, Nepal.

Abstract : he Himalayan orogen has produced three thrust earthquakes with moment magnitude (Mw) 7.8 to 8.5 during the past century, yet no surface ruptures associated with these great earthquakes have been documented. Here, we present paleoseismic evidence from east central Nepal that, since ~700 A.D., a single earthquake ruptured the Frontal Thrust fault at ~1100 A.D., with a surface displacement of ~17 (+5/–3) meters and a lateral extent and size that could have exceeded 240 kilometers and ~Mw 8.8, respectively. Ruptures associated with Mw <8.2 events would contribute to the frontal Himalayas folding but would stop before reaching the surface. These findings could require substantial modifications to current regional seismic hazard models.
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https://hal.archives-ouvertes.fr/hal-00103784
Contributor : Pascale Talour <>
Submitted on : Thursday, October 5, 2006 - 12:01:41 PM
Last modification on : Tuesday, March 17, 2020 - 3:39:21 AM

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Jérôme Lavé, D. Yule, S. Sapkota, K. Basenta, C. Madden, et al.. Evidence for a Great Medieval Earthquake (A.D. 1100) in Central Himalaya, Nepal.. Science, American Association for the Advancement of Science, 2005, 307, pp.1302-1305. ⟨10.1126/science.1104804⟩. ⟨hal-00103784⟩

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