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Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
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Volume 14, issue 5 | Copyright
Nat. Hazards Earth Syst. Sci., 14, 1145-1154, 2014
https://doi.org/10.5194/nhess-14-1145-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 19 May 2014

Research article | 19 May 2014

Avalanche situation in Turkey and back calculation of selected events

A. Aydin1, Y. Bühler2, M. Christen2, and I. Gürer3 A. Aydin et al.
  • 1Düzce University Faculty of Forestry, Konuralp Campus, 81620 Düzce, Turkey
  • 2WSL Institute for Snow and Avalanche Research SLF, Flüelastrasse 11, 7260 Davos Dorf, Switzerland
  • 3Professor Emeritus, Gazi University Faculty of Engineering Civil Engineering Department, Maltepe 06570 Ankara, Turkey

Abstract. In Turkey, an average of 24 people die in snow avalanches every year, mainly in the eastern part of Anatolia and in the eastern Black Sea region, where high-mountain ranges are close to the sea. The proportion of people killed in buildings is very high (87%), especially in comparison to other European countries and North America. In this paper we discuss avalanche occurrence, the climatic situation and historical avalanche events in Turkey; in addition, we identify bottlenecks and suggest solutions to tackle avalanche problems. Furthermore, we have applied the numerical avalanche simulation software RAMMS (rapid mass movements simulation) combined with a (digital elevation model) DEM-based potential release zone identification algorithm to analyze the catastrophic avalanche events in the villages of Üzengili (Bayburt province) in 1993 and Yaylaönü (Trabzon province) in 1981. The results demonstrate the value of such an approach for regions with poor avalanche databases, enabling the calculation of different scenarios and the estimation of run-out distances, impact pressure and flow height.

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