Data driven bivariate landslide susceptibility assessment using geographical information systems: A method and application to Asarsuyu catchment, Turkey

Date

2004-01-01

Author

Süzen, Mehmet Lütfi

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In the last decades, landslide hazard assessment has attracted many researchers' attention. A number of parameters are suggested to be responsible to quantitatively explain the mechanism of landslides; many of these parameters are very important and factual. However, some data types and models are site-specific and could not be applied to different locations. Furthermore, the data stored in continuous parameter maps are divided into a number of classes arbitrarily, depending on the vision of the expert. Basically, this division controls the result of bivariate analysis. Besides, the responsible portion of the parameter map controlling the mechanism is also weighted arbitrarily. Based on these two facts, the class boundaries put a prejudice on the produced susceptibility/hazard maps, which result in dependence on the knowledge of the user rather than being dependent on the data and the fact itself The aim of this study is to refine the previously defined methods in a more data-dependent trend. To achieve this goal, two new concepts: seed cells and percentile maps are introduced. Seed cells are the zones that are considered to represent the best undisturbed morphological decision rules (conditions before landslide occurs) and would be achieved by adding a buffer zone to the crown and flank areas of the landslide. To quantitatively classify the input parameter maps, the data distributions of seed cells in the parameter maps are divided into a number of classes on the basis of their distribution's percentile break-points upon which the parameter maps are directly dependent on the seed cell distributions, hence to the data itself (C) 2003 Elsevier B.V. All rights reserved.

Subject Keywords

Turkey, Information systems, Geographical, Landslide susceptibility mapping

URI

https://hdl.handle.net/11511/36533

Journal

Engineering Geology

DOI

https://doi.org/10.1016/s0013-7952(03)00143-1

Collections

Department of Geological Engineering, Article

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Citation Formats

M. L. Süzen, “Data driven bivariate landslide susceptibility assessment using geographical information systems: A method and application to Asarsuyu catchment, Turkey,” Engineering Geology, pp. 303–321, 2004, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/36533.