1983 Erzurum earthquake

Earthquake in eastern Turkey

1983 Erzurum earthquake

UTC time| 1983-10-30 04:12:30
ISC event| 567451
USGS-ANSS| ComCat
Local date| 30 October 1983 (1983-10-30)
Local time| 07:12:30
Magnitude| 6.6 Mw
Depth| 15 km
Epicenter| 40°21′00″N 42°11′16″E﻿ / ﻿40.35°N 42.1879°E﻿ / 40.35; 42.1879
Type| Oblique-slip
Areas affected| Turkey
Max. intensity| MMI IX (Violent)[1]
Landslides| Yes
Casualties| 1,342 dead

The 1983 Erzurum earthquake occurred in northeastern Turkey on 30 October 1983 at 07:12 local time (04:12 UTC).[2] It had a moment magnitude of 6.6 and a maximum Mercalli intensity of IX (Violent). Reuters reports that about 1,340 people have died and 50 settlements in the provinces of Erzurum and Kars have been demolished by the earthquake.[3]

## Earthquake

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The mainshock was associated with predominantly strike-slip faulting on a vertical-dipping fault plane. The geological area where the earthquake occurred is characterized by many faults trending northeast and east–northeast. The predominant rock types are volcanics which lie on top of severely deformed ophiolites. Its epicenter is located within the Gullu and Allahuekber Mountains which represents a Quaternary shear zone with left-lateral faults marking the boundary. Seismicity is also associated with the Abul Samsar Fracture Zone; a northeast–southwest trending feature of the Caucasus Mountains. A 15 km (9.3 mi) surface rupture trending north–northeast was observed, exhibiting left-lateral and normal slip. Graben-type ground fractures also occurred due to extensional mechanism. The surface rupture length was not consistent with those expected for the earthquake's magnitude.[4]

## Damage

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Well-constructed stone, concrete block and masonry infrastructures such as schools, mosques and medical facilities had less damage compared to others in the affected villages. Some remained intact even in the meizoseismal area. The maximum assigned MSK 64 intensity based on damage was VIII.[4]

Severe damage occurred in the villages of Horasan, Pasinler and Narman municipalities, Erzurum Province. Villages in Sarikamis, Kars Province were also affected. Total destruction was observed in an elliptical area with axises 10 km (6.2 mi) (major) and 5 km (3.1 mi) (minor), respectively. The major axis trends northeast. About 80 percent of the at least 1,330 fatilities occurred in this area; 1,332 people were injured. Ten thousand homes were damaged; 3,200 collapsed. An estimated 26,000 livestock were killed.[4]

## References

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1. ^ Boğaziçi Üniversitesi. "Bogazici University Kandilli Observatory and Earthquake Research Institute National Earthquake Monitoring Center (NEMC) List of historical earthquakes (Tarihsel Depremler)" (in Turkish). Retrieved 28 August 2010.
2. ^ Aysan, F. Yasemin (1984). "The Erzurum-Kars earthquake of Eastern Turkey (1983)". Disasters. 8: 21–32\. doi:10.1111/j.1467-7717.1984.tb00849.x.21-32&rft.date=1984&rft_id=info:doi/10.1111/j.1467-7717.1984.tb00849.x&rft.aulast=Aysan&rft.aufirst=F.+Yasemin&rfr_id=info:sid/en.wikipedia.org:1983+Erzurum+earthquake" class="Z3988">
3. ^ "Timeline: Major earthquakes in Turkey". Reuters. 27 October 2011. Retrieved 12 April 2020.
4. ^ a b c Erdik, Mustafa (1984). "Report on the Turkish Earthquake of October 30, 1983". Earthquake Spectra. 1 (1): 151–172\. Bibcode:1984EarSp...1..151E. doi:10.1193/1.1585261. S2CID 109507734.151-172&rft.date=1984&rft_id=https://api.semanticscholar.org/CorpusID:109507734#id-name=S2CID&rft_id=info:doi/10.1193/1.1585261&rft_id=info:bibcode/1984EarSp...1..151E&rft.aulast=Erdik&rft.aufirst=Mustafa&rft_id=https://journals.sagepub.com/doi/pdf/10.1193/1.1585261&rfr_id=info:sid/en.wikipedia.org:1983+Erzurum+earthquake" class="Z3988">

## Further reading

[edit]

* Erdik, Mustafa (1984), "Report on the Turkish Earthquake of October 30, 1983", Earthquake Spectra, 1: 151–172, Bibcode:1984EarSp...1..151E, doi:10.1193/1.1585261, S2CID 109507734151-172&rft.date=1984&rft_id=https://api.semanticscholar.org/CorpusID:109507734#id-name=S2CID&rft_id=info:doi/10.1193/1.1585261&rft_id=info:bibcode/1984EarSp...1..151E&rft.aulast=Erdik&rft.aufirst=Mustafa&rfr_id=info:sid/en.wikipedia.org:1983+Erzurum+earthquake" class="Z3988">

## External links

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* The International Seismological Centre has a bibliography and/or authoritative data for this event.

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← Earthquakes in 1983 →

* 1983 Popayán (5.5, March 31)
* Coalinga (6.5, May 2)
* Noshiro (7.8, May 26) †
* Biga (6.1, July 5)
* Luzon (6.5, August 17)
* Kopaonik (5.3, September 10)
* Borah Peak (6.9, October 28)
* Erzurum (6.9, October 30) † ‡
* Heze (5.7, November 7) †
* Kaoiki (6.7, November 16)
* Chagos Archipelago (7.7, November 30)
* Hindu Kush (7.4, December 30)
* Liège (4.7, November 8)

† indicates earthquake resulting in at least 30 deaths
‡ indicates the deadliest earthquake of the year

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Earthquakes in Turkey

Historical|

* AD 17 Lydia
* 115 Antioch
* 141 Lycia
* 262 SW Anatolia
* 447 Constantinople
* 526 Antioch
* 528 Antioch
* 557 Constantinople
* 840 Erzurum
* 847 Damascus
* 1114 Marash
* 1269 Cilicia
* 1509 Constantinople
* 1513 Marash
* 1598 Amasya–Çorum
* 1653 Smyrna
* 1668 North Anatolia
* 1688 Smyrna
* 1766 Istanbul
* 1766 Marmara
* 1840 Ahora
* 1855 Bursa
* 1856 Heraklion
* 1859 Erzurum
* 1866 Bingöl
* 1872 Antioch
* 1875 Dinar
* 1881 Chios
* 1883 Çeşme
* 1893 Malatya
* 1894 Istanbul
* 1898 Balıkesir
* 1899 Aydın–Denizli
* 1903 Manzikert
* 1912 Mürefte
* 1914 Burdur
* 1919 Ayvalık

Contemporary|

* 1924 Pasinler
* 1926 Kars
* 1929 Suşehri
* 1930 Salmas
* 1935 Erdek–Marmara Islands
* 1935 Digor
* 1938 Kırşehir
* 1939 Erzincan
* 1941 Van–Erciş
* 1942 Niksar–Erbaa
* 1943 Adapazarı–Hendek
* 1943 Tosya–Ladik
* 1944 Bolu–Gerede
* 1944 Gulf of Edremit–Ayvacik
* 1946 Varto–Hınıs
* 1949 Karlıova
* 1951 Kurşunlu
* 1952 Hasankale
* 1953 Yenice–Gönen
* 1957 Fethiye
* 1957 Abant
* 1964 Manyas
* 1966 Varto
* 1967 Mudurnu
* 1968 Bartın
* 1969 Alaşehir
* 1970 Gediz
* 1971 Bingöl
* 1975 Lice
* 1976 Çaldıran–Muradiye
* 1983 Erzurum
* 1983 Biga
* 1986 Malatya
* 1992 Erzincan
* 1995 Dinar
* 1998 Adana–Ceyhan
* 1999 İzmit
* 1999 Düzce
* 2002 Afyon
* 2003 Bingöl
* 2004 Doğubayazıt
* 2010 Elazığ
* 2011 Kütahya
* 2011 Van
* 2014 Aegean Sea
* 2017 Aegean Sea
* 2019 Istanbul
* 2020 Elazığ
* 2020 Van
* 2020 Bingöl
* 2020 Aegean Sea
* 2022 Düzce
* 2023 Gaziantep–Kahramanmaraş

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