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| Titel |
Liquefaction severity map for Aksaray city center (Central Anatolia, Turkey) |
| VerfasserIn |
A. Yalcin, C. Gokceoglu, H. Sönmez |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 8, no. 4 ; Nr. 8, no. 4 (2008-07-07), S.641-649 |
| Datensatznummer |
250005637
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| Publikation (Nr.) |
 copernicus.org/nhess-8-641-2008.pdf |
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| Zusammenfassung |
| Turkey having a long history of large earthquakes have
been subjected to progressive adjacent earthquakes. Starting in 1939, the
North Anatolian Fault Zone (NAFZ) produced a sequence of major earthquakes,
of which the Mw 7.4 earthquake that struck western Turkey on 17 August 1999. Following the Erzincan earthquake in 1992, the soil liquefaction has
been crucial important in the agenda of Turkey. Soil liquefaction was also
observed widely during the Marmara and the Düzce Earthquake in 1999
(Sönmez, 2003). Aksaray city center locates in the central part of
Turkey and the Tuzgolu Fault Zone passes through near the city center. The
fault zone has been generated to moderate magnitude earthquakes. The geology
of the Aksaray province basin contains Quaternary alluvial deposits formed
by gravel, sand, silt, and clay layers in different thickness. The Tuzgolu
Fault Zone (TFZ) came into being after the sedimetation of alluvial
deposits. Thus, the fault is younger from lithological units and it is
active. In addition, the ground water level is very shallow, within
approximately 3 m from the surface. In this study, the liquefaction
potential of the Aksaray province is investigated by recent procedure
suggested by Sonmez and Gokceoglu (2005). For this purpose, the liquefaction
susceptibility map of the Aksaray city center for liquefaction is presented.
In the analysis, the input parameters such as the depth of the upper and
lower boundaries of soil layer, SPT-N values, fine content, clay content and
the liquid limit were used for all layers within 20 m from the surface. As a
result, the category of very high susceptibility liquefaction class was not
observed for the earthquake scenario of Ms=5.2, 4.9% of the study area
has high liquefaction susceptibility. The percentage of the moderately, low,
and very low liquefied areas are 28.2%, 30.2%, and 36.3%,
respectively. The rank of non-liquefied susceptibility area is less than
1%. |
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