Landslide risk mapping in an urban area of the city of Natal, Brazil

Laddyla Bezerra*, Osvaldo de Freitas Neto, Olavo Santos, Slobodan Mickovski

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)
104 Downloads (Pure)


Landslides are part of the natural processes of Earth’s surface dynamic, which could be accelerated or triggered by anthropic interference. Inadequate occupation of areas highly susceptible to landslide processes is the principal cause of accidents on Brazilian urban slopes, especially those occupied by settlements and slums. In Natal, Rio Grande do Norte state, Brazil, the existence of areas with steep and densely occupied slopes makes the municipality susceptible to landslides. In this context, the present study aimed to map the risk of landslides in an urban area located in the city of Natal. Using the quali-quantitative model proposed by Faria (2011), adapted for the conditions of the study area, which applies a multicriteria analytical hierarchy process (AHP) to a Geographic Information System (GIS), 11 risk indicators were submitted to pairwise comparisons by 10 risk management specialists in order to determine the relative importance (weighting) for each of these factors as a function of their contribution to the risk. The weightings obtained were combined to produce the final risk map of the study area, using a map algebra framework. The results show the existence of a critical risk for the resident population, primarily related to the possibility of a landslide, with potentially negative economic, environmental, and mainly social impacts.
Original languageEnglish
Article number9601
Pages (from-to)1-18
Number of pages18
Issue number22
Early online date18 Nov 2020
Publication statusPublished - Nov 2020


  • GIS
  • eco-engineering
  • risk analysis
  • risk assessment
  • Brazil
  • landslides
  • Geotechnical engineering
  • Landslides
  • Multicriteria assessment
  • Risk
  • Vulnerability
  • Analytical hierarchy process
  • Hazard

ASJC Scopus subject areas

  • General Engineering
  • General Environmental Science
  • General Earth and Planetary Sciences
  • General Decision Sciences
  • Computer Science (miscellaneous)
  • Environmental Science (miscellaneous)
  • Geography, Planning and Development
  • Energy Engineering and Power Technology
  • Hardware and Architecture
  • Management, Monitoring, Policy and Law
  • Building and Construction
  • Computer Networks and Communications
  • Renewable Energy, Sustainability and the Environment


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