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| 2017 Kermanshah earthquake | |
|---|---|
| Name | 2017 Kermanshah earthquake |
| Native name | زمینلرزه کرمانشاه ۲۰۱۷ |
| Date | 2017-11-12 |
| Time | 18:48 IRST |
| Magnitude | 7.3 M_w |
| Depth | 18 km |
| Countries affected | Iran; Iraq |
| Fatalities | 629+ |
| Injuries | 8,000+ |
| Intensity | IX (Violent) |
| Fault | Zagros Fold and Thrust Belt |
2017 Kermanshah earthquake was a major seismic event that struck western Iran on 12 November 2017, centered near the city of Sarpol-e Zahab in Kermanshah Province and affecting neighbouring areas of Iraq, Kurdistan Region, and Turkey. The quake, measured at about 7.3 on the moment magnitude scale and occurring along structures of the Zagros Fold and Thrust Belt, caused widespread destruction to villages, towns, and infrastructure and produced significant international humanitarian concern involving actors such as the United Nations, International Committee of the Red Cross, and multiple national aid agencies.
Western Iran lies within the broad collision zone between the Arabian Plate and the Eurasian Plate, a tectonic setting responsible for mountain building in the Zagros Mountains and recurrent seismicity including historical events like the 1909 Silakhor earthquake and 1990 Manjil–Rudbar earthquake. The affected area includes the Kurdish-populated regions of Kermanshah Province, historic routes such as the Silk Road, and infrastructure connecting cities like Kermanshah (city), Ilam Province, and Baghdad. Iran's seismic hazard has driven institutions such as the International Seismological Centre, United States Geological Survey, and Iran’s Institute of Geophysics, University of Tehran to monitor the region with networks of seismic stations and GPS arrays.
The mainshock occurred at 18:48 local time and was widely recorded by regional networks including the USGS and the European-Mediterranean Seismological Centre. The rupture was associated with thrust faulting on the Zagros fold-and-thrust system, producing surface deformation documented by agencies like NASA and researchers from universities such as Sharif University of Technology and University of Tehran. Numerous aftershocks followed, recorded by the Global Seismographic Network and prompting comparisons with sequences from the 2013 Balochistan earthquakes and the 2011 Van earthquake in Turkey. Seismologists referenced mechanisms consistent with shortening across the Iran–Iraq border and cited historical catalogs maintained by the International Seismological Centre and the Iranian Seismological Center.
The earthquake caused extensive damage across Kermanshah Province, destroying homes in rural districts such as Sarpol-e Zahab, Eyvan, and Qasr-e Shirin, and damaging cultural sites, roads, and utilities. Casualties numbered in the hundreds, with more than 600 fatalities and several thousand injuries, overwhelming local hospitals including facilities in Kermanshah (city) and referral centers linked to Tehran University of Medical Sciences. The disaster disrupted lifelines such as the Baghdad–Tehran road and impacted populations including Kurdish and Lur communities, triggering displacement to makeshift camps and urban shelters coordinated with provincial authorities and relief organizations like the Red Crescent Society of the Islamic Republic of Iran and the Iraqi Red Crescent Society. Media coverage by outlets such as IRIB, Al Jazeera, BBC News, and Reuters documented the human toll and images of collapsed buildings, many of which were adobe and masonry dwellings vulnerable to seismic shaking described by engineering teams from institutions like Tehran Polytechnic.
National response was led by Iranian agencies including the Red Crescent Society of the Islamic Republic of Iran, Iran’s Ministry of Health and Medical Education, and the Basij in cooperation with provincial authorities. Emergency medical teams, search and rescue units, and military logistics from the Islamic Revolutionary Guard Corps and the Iranian Army were mobilized alongside international offers of assistance from states such as Turkey, Iraq, Pakistan, and international organizations including the United Nations Office for the Coordination of Humanitarian Affairs and the International Committee of the Red Cross. Non-governmental actors like Médecins Sans Frontières, Turkish Red Crescent, and Iranian diaspora groups provided field hospitals, shelter materials, and blankets. Coordination challenges involved access in border regions, clearance of damaged transport routes, and deployment of heavy machinery for rubble removal documented by agencies like the Iranian National Disaster Management Organization.
Recovery efforts involved reconstruction of housing, retrofitting of critical infrastructure, and psychosocial support programs implemented by universities including Kermanshah University of Medical Sciences and technical input from engineering institutions such as Sharif University of Technology and Amirkabir University of Technology. Economic and social recovery engaged ministries like Iran’s Ministry of Roads and Urban Development and international financial discussions with entities referenced in regional development forums. Long-term recovery highlighted debates over building codes promulgated by Iran’s construction authorities and comparisons to reconstruction after events such as the 2003 Bam earthquake and 2012 East Azerbaijan earthquakes (2012); priorities included resilient housing, seismic strengthening of schools administered under provincial education departments, and memorialization of the victims through local municipalities.
Post-event investigations by seismologists from institutions such as the Institute of Geophysics, University of Tehran, the Seismological Society of America, and international research teams used aftershock catalogs, focal mechanism solutions from the USGS and the European-Mediterranean Seismological Centre, and satellite interferometry from ESA and NASA to map slip distribution and surface rupture. Studies examined the role of blind thrust faults within the Zagros fold-and-thrust belt, seismic hazard models employed by the International Seismological Centre, and implications for seismic zoning used by Iran’s national planners. Peer-reviewed analyses compared the sequence to historical faulting in the region and contributed to improved seismic risk assessments referenced by academic journals and engineering bodies.