ORBi: Fraser J. G. - A 3000-year Record of Surface Rupturing Earthquakes at Gunalan; Variable Rupture Lengths on 1939 Erzincan Earthquake Rupture Segment of the North Anatolian Fault, Turkey

Reference : A 3000-year Record of Surface Rupturing Earthquakes at Gunalan; Variable Rupture Lengths...


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
	To cite this reference:	http://hdl.handle.net/2268/114609

Title :	A 3000-year Record of Surface Rupturing Earthquakes at Gunalan; Variable Rupture Lengths on 1939 Erzincan Earthquake Rupture Segment of the North Anatolian Fault, Turkey
Language :	English
Author, co-author :	Fraser, J. G. [> >]
	Hubert, Aurelia [Université de Liège - ULg > Département de géographie > Géomorphologie >]
	Verbeck, A. [> >]
	Garcia - Moreno, D. [> >]
	Avsar, U. [> >]
	Marciq, N. [> >]
	Coudijzer, A. [> >]
	Vlamunck, A. [> >]
	Vanneste, K. [> >]
Publication date :	2012
Journal title :	Annals of Geophysics = Annali di Geofisica
Publisher :	Editrice Compositori
Audience :	International
ISSN :	1593-5213
e-ISSN :	2037-416X
City :	Bologna
Country :	Italy
Keywords :	[en] paleoseismologie ; North Anatolian Fault
Abstract :	[en] The North Anatolian Fault is a ~1200 km long right-lateral strike-slip fault that forms the northern boundary of the Anatolian plate. A damaging sequence of earthquakes ruptured almost the entire fault in the twentieth century. This study adds to the growing number of paleoseismic investigations on the 350 km long 1939 Erzincan earthquake rupture segment, which is toward the eastern end of the North Anatolian Fault in Turkey. Using three paleoseismic trenches located along about 2km of the principal fault strand, this study determines the timing of five earthquakes prior to the 1939 earthquake. The first three earthquakes are correlated to historical earthquakes in A.D. 1668, 1254, 499 and two further events were identified at 881 – 673 B.C. and 1406 – 1291 B.C. (2σ age ranges). By comparing the earthquake timing determined in this study to the results of other paleoseismic investigations on the 1939 rupture segment, it becomes clear that this historical rupture segment does not always rupture in unison. This analysis indicates that the A.D. 499 earthquake was the last time the 1939 rupture segment ruptured in unison; although partial ruptures of the 1939 rupture segment occur more frequently and also produce large magnitude earthquakes (> Mw 7).
Funders :	EU Marie Curie Excellence Grant Project (MEXT-CT-2005-025617: Seismic Cycles)
Name of the research project :	Understanding the Irregularity of Seismic Cycles: A Case Study in Turkey
Permalink :	http://hdl.handle.net/2268/114609

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