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1983 Erzurum earthquake

Earthquake in eastern Turkey

Field	Value
title	1983 Erzurum earthquake
timestamp	1983-10-30 04:12:30
isc-event	567451
anss-url	iscgem567451
local-date
local-time	07:12:30
map2	{{Location map	Turkey	relief=1
lat	40.35
long	42.19
mark	Bullseye1.png
marksize	40
position	top
width	250
float	right
caption	}}
depth	15 km
location
type	Oblique-slip
magnitude	6.6
intensity
countries affected	Turkey
landslide	Yes
casualties	1,342 dead

| isc-event = 567451 | anss-url = iscgem567451 | local-date = | local-time = 07:12:30 The 1983 Erzurum earthquake occurred in northeastern Turkey on 30 October 1983 at 07:12 local time (04:12 UTC). 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.

Earthquake

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 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.

Damage

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.

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 (major) and 5 km (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.

References

Boğaziçi Üniversitesi. "Bogazici University Kandilli Observatory and Earthquake Research Institute National Earthquake Monitoring Center (NEMC) List of historical earthquakes (Tarihsel Depremler)".
(1984). "The Erzurum-Kars earthquake of Eastern Turkey (1983)". Disasters.
(2011-10-27). "Timeline: Major earthquakes in Turkey".
(1984). "Report on the Turkish Earthquake of October 30, 1983". Earthquake Spectra.

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

earthquakes-in-turkey 1983-in-turkey history-of-erzurum-province october-1983-in-europe 1983-disasters-in-turkey 1983-earthquakes

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