1949 Karlıova earthquake explained

1949 Karlıova earthquake
Timestamp:1949-08-17 18:44:17
Isc-Event:896772
Anss-Url:iscgem896772
Local-Time:20:44:17
Magnitude:7.1
6.7 [1]
Location:39°N 40.5°W[2]
Countries Affected:Turkey, Karlıova
Type:Strike-slip
Fault:North Anatolian Fault
Casualties:320–450

The 1949 Karlıova earthquake occurred at 18:44 UTC on 17 August with an epicenter near Karlıova in Bingöl Province, Eastern Anatolia Region of Turkey. It had an estimated magnitude of 6.7,[1] a maximum felt intensity of X (Extreme) on the Mercalli intensity scale, and caused 320–450 casualties and destroyed 3,500 buildings.[3]

Tectonic setting

The Karlıova region is the location of the triple junction between the boundaries of the Eurasian Plate, Anatolian Plate and the Arabian Plate, the North Anatolian Fault, East Anatolian Fault and the Mus fold and thrust belt, which passes to the east into the Zagros fold and thrust belt. The earthquake occurred at the eastern end of the North Anatolian Fault.[4]

Characteristics

The seismic moment estimated for this earthquake is 3.5E+26, equivalent to a magnitude of 7.1 on the moment magnitude scale. The estimated fault length involved is 63 km.[5]

The earthquake ruptured the easternmost part of the Yedisu segment (FS3, also known as the Elamalı segment)[6] and most of the Ilıpınar segment (FS2 & FS1), although it remains unclear whether the rupture continued as far as Karlıova itself.[7] [8]

See also

Notes and References

  1. Web site: Bogazici University Kandilli Observatory and Earthquake Research Institute National Earthquake Monitoring Center (NEMC) List of major earthquakes 1900–2004. Boğaziçi Üniversitesi. Turkish. 27 August 2010.
  2. Web site: Comments for the Significant Earthquake. NGDC. 27 August 2010.
  3. Book: Ozden . Ali Tolga . Erkan . Burcak . Disaster Management of Turkey from 1509 to 2010 . Kaneko . Yuka . Matsuoka . Katsumi . Toyoda . Toshihisa . 2016 . Asian Law in Disasters: Toward a Human-Centered Recovery . Milton Park, Oxfordshire . . 71–95, page 82 . 978-1-317-39684-0 . 27 September 2021.
  4. Book: Hubert-Ferrari . A. . King . G. . van der Woerd . J. . Villa I., Altunel E. & Armijo R. . van Hinsbergen D.J.J., Edwards M.A. and Govers R. . Collision and collapse at the Africa-Arabia-Eurasia subduction zone . 21 January 2011 . Special Publications . 311 . 2009 . Geological Society . London . 978-1-86239-270-0 . 133–154 . Long-term evolution of the North Anatolian Fault: new constraints from its eastern termination.
  5. Book: Ellsworth, W.L.. Earthquake Probabilities in the San Francisco Bay Region: 2002–2031. http://pubs.usgs.gov/of/2003/of03-214/WG02_OFR-03-214_AppendixD.pdf. 19 January 2011. Open File Reports. 03-214. USGS. Appendix D: Magnitude and Area Data for Strike Slip Earthquakes.
  6. Sançar . T. . Akyüz . H.S. . 2014 . Kuzey Anadolu Fay Zonu, Ilıpınar Segmenti'nin (Karlıova, Bingöl) Paleosismolojisi (Paleoseismology of the Ilıpınar Segment (Karlıova, Bingöl), The North Anatolian Fault Zone) . Türkiye Jeoloji Bülteni (Geological Bulletin of Turkey) . 57 . 2 . 38. Turkish.
  7. Zabcı . C. . Sançar . T. . Akyüz . H.S. . Kıyak . N.G. . 2015 . Spatial slip behavior of large strike-slip fault belts: Implications for the Holocene slip rates of the eastern termination of the North Anatolian Fault, Turkey . Journal of Geophysical Research: Solid Earth . 120 . 12 . 8591–8609 . 10.1002/2015JB011874. 2015JGRB..120.8591Z . free .
  8. Barka . A.A. . Kadinsky-Cade . K. . 1988 . Strike-slip fault geometry in Turkey and its influence on earthquake activity . Tectonics . 7 . 3 . 663–684 . 10.1029/TC007i003p00663. 1988Tecto...7..663B .

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