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1949 Karlıova earthquake

Coordinates: 39°00′N 40°30′E / 39.0°N 40.5°E / 39.0; 40.5
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1949 Karlıova earthquake
1949 Karlıova earthquake is located in Turkey
1949 Karlıova earthquake
UTC time1949-08-17 18:44:17
ISC event896772
USGS-ANSSComCat
Local date17 August 1949 (1949-08-17)
Local time20:44:17
Magnitude6.7 Ms[1]
Epicenter39°00′N 40°30′E / 39.0°N 40.5°E / 39.0; 40.5[2]
FaultNorth Anatolian Fault
TypeStrike-slip
Areas affectedTurkey, Karlıova
Max. intensityX (Extreme)
Casualties320–450
Map of Anatolian Plate showing main tectonic boundaries

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.[2][1]

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.[3]

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.[4]

The earthquake ruptured the easternmost part of the Yedisu segment (FS3, also known as the Elamalı segment)[5] and most of the Ilıpınar segment (FS2 & FS1), although it remains unclear whether the rupture continued as far as Karlıova itself.[6][7]

See also

References

  1. ^ a b c Boğaziçi Üniversitesi. "Bogazici University Kandilli Observatory and Earthquake Research Institute National Earthquake Monitoring Center (NEMC) List of major earthquakes 1900–2004" (in Turkish). Retrieved 27 August 2010.
  2. ^ a b NGDC. "Comments for the Significant Earthquake". Retrieved 27 August 2010.
  3. ^ Hubert-Ferrari, A.; King, G.; van der Woerd, J.; Villa I., Altunel E. & Armijo R. (2009). "Long-term evolution of the North Anatolian Fault: new constraints from its eastern termination". In van Hinsbergen D.J.J., Edwards M.A. and Govers R. (ed.). Collision and collapse at the Africa-Arabia-Eurasia subduction zone (PDF). Special Publications. Vol. 311. London: Geological Society. pp. 133–154. ISBN 978-1-86239-270-0. Retrieved 21 January 2011.
  4. ^ Ellsworth, W.L. "Appendix D: Magnitude and Area Data for Strike Slip Earthquakes" (PDF). Earthquake Probabilities in the San Francisco Bay Region: 2002–2031. Open File Reports. USGS. 03-214. Retrieved 19 January 2011.
  5. ^ 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) (in Turkish). 57 (2): 38.
  6. ^ 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: 8591–8609. doi:10.1002/2015JB011874.
  7. ^ Barka, A.A.; Kadinsky-Cade, K. (1988). "Strike-slip fault geometry in Turkey and its influence on earthquake activity". Tectonics. 7 (3): 663–684. doi:10.1029/TC007i003p00663.
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