Flood risk assessment and mapping in Abidjan district using multi-criteria analysis (AHP) model and geoinformation techniques, (cote d’ivoire)
| Autor: | Samuel Nii Odai, Fernand Koffi Kouame, Lucette You Akpa, Michael Thiel, Jean Homian Danumah, Bachir Saley, Joerg Szarzynski, Adjei Kwaku |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Geographic information system
010504 meteorology & atmospheric sciences 0208 environmental biotechnology Geography Planning and Development Vulnerability 02 engineering and technology Management Monitoring Policy and Law Environmental Science (miscellaneous) 01 natural sciences Natural hazard Flood risk Multicriteria analysis Safety Risk Reliability and Quality 0105 earth and related environmental sciences Land use Flood myth business.industry Flooding (psychology) Environmental engineering Geoinformation techniques Abidjan Remote sensing Geotechnical Engineering and Engineering Geology 020801 environmental engineering Geography Flood risk assessment business Water resource management Drainage density Cote d’Ivoire |
| Popis: | Flood is one of the most destructive natural disasters of climate change effects in West Africa. Flood risk occurrence is a combination of natural and anthropogenic factors, which calls for a better understanding of its spatial extent. The aim of this paper is to identify, and map areas of flood risk in Abidjan district. This work is based on the integration of multi-criteria data including slope, drainage density, type of soil, Isohyet, population density, land use and sewer system density within ArcGIS interface. The resulting AHP flood risk map shows that areas under high and very high flood risk covers 34 % of the study area. The Analytic Hierarchy Process (AHP) method used as a multi-criteria analysis allowed the integration of several elements under two criteria, hazards and vulnerability, for flood risk assessment and mapping. Results revealed that, Abidjan district is heavily exposed to the risk of flooding. Eight out of thirteen (8/13) municipalities within the district are at a high risk of flooding which calls for decision makers to effectively develop strategies for future flood occurrences within the Abidjan district (South of Cote d’Ivoire). |
| Databáze: | OpenAIRE |
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