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Accepted as a natural disaster, avalanches often cause life and material losses despite occurring in much lesser frequency. Similarly in Nigde, the number of avalanches is lesser than the other natural disasters while its the only disaster causing losses of life. Indeed, in December 2018, two mountaineers were caught by an avalanche in famously known Demirkazık Mountains where local and foreign climbers spend their time. The avalanche took place in an area classified as potential release area according to the Avalanche Sensitivity Maps of 25-m resolution that were prepared by Nigde Directorate of Disaster and Emergency Management. The maps were obtained by the studies performed between 2015-2017 within the scope of circular issued by Presidency of Disaster and Emergency Management on 06.24.2015 with number 2015/5. In this study, considering the mentioned avalanche disaster, Demirkazık and surrounding area is focused for its avalanche potential and high resolution avalanche susceptibility maps are generated. The maps are generated after two phases of work. The first phase involved determination of the avalanche starting zones through geomorphological and topographic analysis (subjective weight assignment) based on GIS. In the second phase, digital terrain models (DTM) and avalanche starting areas are put into CONEFALL program to obtain release areas. Then these release areas are overlapped in GIS environment to generate the Avalanche susceptibility maps. through this study, it is aimed to generate reference maps to be used in determination of safer climb routes by taking into account of the areas with zero or minimum susceptibility against the avalanche hazard.
International Science and Engineering Application Symposium on Hazards
ISESH
Kaan ÖCAL
Serkan GÖKALP
Hakan KARACA