Debris flow susceptibility and propagation assessment in West Koyulhisar, Turkey
- PDF / 1,437,389 Bytes
- 13 Pages / 595.22 x 842 pts (A4) Page_size
- 55 Downloads / 215 Views
e-mail: [email protected]
http://jms.imde.ac.cn https://doi.org/10.1007/s11629-020-6261-6
Debris flow susceptibility and propagation assessment in West Koyulhisar, Turkey Ali POLAT 1*
https://orcid.org/0000-0002-9147-3633;
Dursun ERİK2
e-mail: [email protected]
https://orcid.org/0000-0001-8884-5443; e-mail: [email protected]
*Corresponding author 1 Provincial Directorate of Disaster and Emergency, Sivas 58050, Turkey 2 Republic of Turkey General Directorate of Highway, 16. District, Sivas 58049, Turkey Citation: Polat A, Erik D (2020) Debris flow susceptibility and propagation assessment in West Koyulhisar, Turkey. Journal of Mountain Science 17(11). https://doi.org/10.1007s11629-020-6261-6
© Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract: Turkey is highly prone to landslides because of the geological and geographic location. The study area, which is located in a tectonically active region, has been significantly affected by mass movements. Flow type landslides are frequently observed due to this location. This study aims at determining the source area and propagation of debris flows in the study area. We used the heuristic method to extract source areas of debris flow, and then used receiver operating characteristic (ROC) curve analysis to assess the performance of the method, and finally calculated the Area under curve (AUC) values being 83.64% and 80.39% for the success rate and prediction rate, respectively. We calculated potential propagation area and runout distance with Flow-R software. In conclusion, the obtained results (susceptibility map, propagation and runout distance) are very important for decisionmakers at the region located on an active fault zone, which is highly prone to natural disasters. The outputs of this study could be used in site selection studies, designing erosion prevention systems and protecting existing human-made structures. Keywords: Koyulhisar; Debris flow; Flow path assessment; Heuristic method; Landslide susceptibility mapping; Geographical Information System (GIS)
Received: 08-Feb-2019 Revised: 13-Jul-2020 Accepted: 14-Sep-2020
Introduction Natural hazards cause much loss of life and property in the world. Studies about weather forecasting systems, early warning systems for tsunami and earthquake prediction are proceeding. Determination of source areas of avalanches, landslides and similar natural disasters is essential for risk assessment studies. The landslide is the most common type of natural disaster after the earthquakes in Turkey. Disaster risk is high in flow-type landslides, which is one of the landslide types of generally and widely accepted landslides classification of Varnes (1978). Debris flow and debris avalanche, which are flow types of a mass movement, cause significant loss of life and property due to the occurrence rates. Debris flow is a fast-moving type of flow that contains water and debris-like material (Guo and Wu 2015). Especially slope and water cont
Data Loading...
