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A novel rule-based approach in mapping landslide susceptibility

Citation

Roodposhti, MS and Aryal, J and Pradhan, B, A novel rule-based approach in mapping landslide susceptibility, Sensors, 19, (10) Article 2274. ISSN 1424-8220 (2019) [Refereed Article]


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Copyright Statement

Copyright 2019 The Authors. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/

DOI: doi:10.3390/s19102274

Abstract

Despite recent advances in developing landslide susceptibility mapping (LSM) techniques, resultant maps are often not transparent, and susceptibility rules are barely made explicit. This weakens the proper understanding of conditioning criteria involved in shaping landslide events at the local scale. Further, a high level of subjectivity in re-classifying susceptibility scores into various classes often downgrades the quality of those maps. Here, we apply a novel rule-based system as an alternative approach for LSM. Therein, the initially assembled rules relate landslide-conditioning factors within individual rule-sets. This is implemented without the complication of applying logical or relational operators. To achieve this, first, Shannon entropy was employed to assess the priority order of landslide-conditioning factors and the uncertainty of each rule within the corresponding rule-sets. Next, the rule-level uncertainties were mapped and used to asses the reliability of the susceptibility map at the local scale (i.e., at pixel-level). A set of If-Then rules were applied to convert susceptibility values to susceptibility classes, where less level of subjectivity is guaranteed. In a case study of Northwest Tasmania in Australia, the performance of the proposed method was assessed by receiver operating characteristics’ area under the curve (AUC). Our method demonstrated promising performance with AUC of 0.934. This was a result of a transparent rule-based approach, where priorities and state/value of landslide-conditioning factors for each pixel were identified. In addition, the uncertainty of susceptibility rules can be readily accessed, interpreted, and replicated. The achieved results demonstrate that the proposed rule-based method is beneficial to derive insights into LSM processes.

Item Details

Item Type:Refereed Article
Keywords:Shannon entropy, uncertainty, landslide susceptibility mapping (LSM), GIS, Tasmania
Research Division:Engineering
Research Group:Geomatic Engineering
Research Field:Photogrammetry and Remote Sensing
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Environmental Sciences
UTAS Author:Roodposhti, MS (Mr Majid Roodposhti)
UTAS Author:Aryal, J (Dr Jagannath Aryal)
ID Code:133060
Year Published:2019
Web of Science® Times Cited:2
Deposited By:Geography and Environmental Studies
Deposited On:2019-06-05
Last Modified:2019-08-21
Downloads:1 View Download Statistics

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