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Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
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https://doi.org/10.5194/nhess-2020-87
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-2020-87
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  08 May 2020

08 May 2020

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This discussion paper is a preprint. It has been under review for the journal Natural Hazards and Earth System Sciences (NHESS). The manuscript was not accepted for further review after discussion.

Effect of the Slope Angle and Its Classification on Landslide

Seda Çellek Seda Çellek
  • Department of Geology Engineering, Kırşehir Ahi Evran University, Kırşehir, 40100, Turkey

Abstract. The phase after the determination of the landslide area in landslide susceptibility studies is the selection of methods and parameters to be used. Approximately 1500 randomly selected publications show that it is necessary to select a parameter based on the area. Research has shown that the parameter of slope is greatly preferred. There is nearly consensus of opinion among researchers regarding the use of the parameter. The research included the definition of slope made by different researchers, the advantages and disadvantages of the use of the parameter, different classifications that are used, the formation intervals of landslides, their use together with other parameters, and its effect on the formation of landslides. Classifications were studied based on the slope values at which landslides. Generally, automatic slope classifications are used in the preparation of landslide maps. There isn’t standard in parameter maps. Therefore, there isn’t class range that is referenced when preparing slope maps.

In this study, preferred class ranges and slope values where landslides occur were determined in the literature. 40 landslides area has been selected in Turkey. These were evaluated in the slope classes determined according to the literature. The results compared with the literature were found to be compatible.

Seda Çellek

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Interactive discussion

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Status: closed
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Seda Çellek

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Latest update: 28 Sep 2020
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Short summary
In this study, the slope parameter used in the preparation of landslide susceptibility maps has been studied in detail. With the extensive literature research, it was determined how the researchers used the parameter and the its class ranges. Class ranges in selected areas of Turkey was determined to compare with the literature. Thus a highly preferred parameter has been studied in detail.
In this study, the slope parameter used in the preparation of landslide susceptibility maps has...
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