Article (Scientific journals)
Large earthquakes Cycles in Lake Sediments along the North Anatolian Fault, Turkey
Boës, X.; Moran, S. B.; King, J. et al.
2009In Journal of Paleolimnology, (10.1007/s10933-009-9376-x)
Peer Reviewed verified by ORBi
 

Files


Full Text
Boes et al. 2009.pdf
Publisher postprint (736.28 kB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Turkey; North Anatolian Fault; Lacustrine paleoseismology
Abstract :
[en] In 1999, the large surface-rupturing earth- quakes of Izmit and Duzce completed a 60-year cycle that included a westward migration of nine consecutive large earthquake failures ([50 km surface rupture), which started with the 1939 Erzincan earthquake in eastern Turkey. In this study, we focused on seismic cycles and seismic risk predictability along the North Anatolian Fault (NAF). Toward the west end of the NAF (26°E–32°E, i.e. Bolu), large earthquake fre- quency is measured from either historic earthquake catalogs, or geologic records from isolated outcrops and marine sediment cores from the Marmara Sea. In comparison, the eastern part of the NAF zone (32°E– 42°E) is less well documented by palaeo-seismologic archives. Thus, the sediment records of lake basins located on the eastern NAF zone constitute a unique opportunity for testing a new palaeo-seismologic approach. To this end, we used a diverse array of complementary methods involving: (1) a 600-km transect of fault-related lakes, (2) sedimentologic observations on cores from six lakes, and (3) a comparison between records of catastrophic sediment transfers in lakes (i.e. radionuclide chronomarkers and erosion tracers) and historic earthquake reports. Our study indicates that lakes along the NAF are sensitive geologic recorders of large surface-rupturing earth- quakes (surface-wave magnitude (Ms) C 6.9); smaller intensities are not recorded. The most responsive lake systems exhibit increases in sediment accumulation by a factor of [40 for a [3-m strike-slip displacement (Ms C 7). However, based on results from the 1939 Erzincan earthquake (Ms = 7.8) chronostratigraphic marker, large surface-rupturing earthquakes are detected only by certain lake records and not by others. Matching multiple lake records along the NAF pro- vides information both on the location of a surface rupture of a paleo-earthquake as well as its magnitude. Finally, the shallow lake basins along the NAF could potentially document cycles of large seismic events for at least the late Holocene.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Boës, X.
Moran, S. B.
King, J.
Cagatay, N.
Hubert, Aurelia  ;  Université de Liège - ULiège > Département de géographie > Géomorphologie
Language :
English
Title :
Large earthquakes Cycles in Lake Sediments along the North Anatolian Fault, Turkey
Publication date :
2009
Journal title :
Journal of Paleolimnology
ISSN :
0921-2728
eISSN :
1573-0417
Publisher :
Springer Science & Business Media B.V.
Special issue title :
[1] Graduate School of Oceanography, University of Rhode Island, Narragansett, RI 02881, USA - Eastern Mediterranean Centre for Oceanography and Limnology, Istanbul Technical University, Turkey
Issue :
10.1007/s10933-009-9376-x
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
Understanding the Irregularity of Seismic Cycles: A Case Study in Turkey
Funders :
EU Marie Curie Excellence Grant Project (MEXT-CT-2005-025617: Seismic Cycles)
Available on ORBi :
since 26 November 2010

Statistics


Number of views
87 (7 by ULiège)
Number of downloads
164 (2 by ULiège)

Scopus citations®
 
11
Scopus citations®
without self-citations
7
OpenCitations
 
11

Bibliography


Similar publications



Contact ORBi