1992 Kohat earthquake

1992 earthquake in Pakistan 1992 Kohat earthquake Pakistan 1992-05-20 12:20:32 292331 usp00057rv May 20, 1992 17:20:32 w y 6.3 16.3 km 33.377 N 71.317 E 7 36 dead, 100 injured The 1992 Kohat earthquake struck Khyber Pakhtunkhwa Province in Pakistan on May 20. The w 6.3 earthquake inflicted significant damage in the nearby city Kohat. An estimated 36 people died and 100 were injured in the Peshawar and Kohat districts.M 6.3 - 2 km WSW of Lachi, Pakistan https://earthquake.usgs.gov/earthquakes/eventpage/usp00057rv/executive United States Geological Survey 14 October 2021 Four-hundred (400) homes were wiped out, affecting 2,100 residents in the region.Significant Earthquake Information https://www.ngdc.noaa.gov/hazel/view/hazards/earthquake/event-more-info/5325 ngdc.noaa.gov NOAA National Centers for Environmental Information 14 October 2021 Tectonic setting Pakistan is directly influenced by the ongoing oblique convergence between the Indian plate and Eurasian plate. Along the northern margin of the India-Eurasia convergent boundary is the Main Himalayan Thrust which accommodates north–south continental collision. Thrust faulting in the Hindu Kush and Himalaya region is the direct result of the plate interaction. In the Balochistan region, the convergence is highly oblique, involving the large Chaman Fault; a left-lateral strike-slip structure. While a large portion of the boundary is accommodated by strike-slip faulting, the region also hosts the Sulaiman fold and thrust belt.Kirsty Reynolds Alex Copley Ekbal Hussain Evolution and dynamics of a fold-thrust belt: the Sulaiman Range of Pakistan Geophysical Journal International 2015 201 2 683–710 10.1093/gji/ggv005 free https://academic.oup.com/gji/article/201/2/683/568354 Large thrust earthquakes including the 1934 Nepal–India earthquake were the direct result of the plate interaction. The 2005 Kashmir earthquake occurred near the vicinity of the Main Himalayan Thrust. Earthquake The earthquake occurred in an unusual region because the western boundary of the India-Eurasia plate boundary was thought to be aseismic; unable to produce earthquakes. The India Plate slips beneath the Kohat Plateau along an almost horizontal decollement at a rate of 2 mm/yr. Slips occur aseismically due to the presence of salt, which acts as a lubricant between the plateau and the underlying bedrock, reducing friction during slip and avoiding earthquakes.Gammon Crystal Rare Caterpillar-like Horizontal Earthquake Discovered https://www.livescience.com/17927-rare-caterpillar-horizontal-earthquake-discovered.html Live Science 14 October 2021 16 January 2012 At the location of the earthquake, the loss of salt on the decollement led to increased friction and seismic strain. Seismic strain is accumulated and overcame during earthquakes. The earthquake rupture covered an 80 km2 on a near-horizontal decollement thrust fault. The event led to the conclusion that slip on the decollement occurs both aseismically and seismically. It is the largest ever recorded in the Kohat Plateau.S. P. Satyabala Zhaohui Yang Roger Bilham Stick–slip advance of the Kohat Plateau in Pakistan Nature Geoscience 2012 5 2 147–150 10.1038/ngeo1373 2012NatGe...5..147S 92989973 https://www.nature.com/articles/ngeo1373 subscription See also List of earthquakes in 1992 List of earthquakes in Pakistan References External links 292331 Category:Earthquakes in Pakistan Category:1992 earthquakes Category:1992 in Pakistan Category:May 1992 in Pakistan Category:20th century in North-West Frontier Province Category:Disasters in Khyber Pakhtunkhwa Category:History of Khyber Pakhtunkhwa (1947–present)