Multi Hazard Risk Assessment Using GIS Techniques in the Mbo Area of Nigeria

Okpo O. Ekere and Joseph C. Udoh

Asian Review of Environmental and Earth Sciences, 2014, vol. 1, issue 1, 1-4

Abstract: The study area Mbo and environs of South Eastern Nigeria are experiencing frequent inundation by flood and erosion hence this research is aimed at generating vulnerability hazard and risk maps as decision support tools for policy makers. Rainfall, elevation, slope, soil association and hydrology were used as input layers to model the hazard layers while population density, vegetation and Normalized Difference Vegetation Index (NDVI) were used to model the vulnerability layers. Risk maps were generated weighting and combining the Hazard and vulnerability layers using the Single Output Map Algebra function of Arcmap soft ware. The final multi hazard risk map , derived by combining the flood and erosion risk maps shoed that 119.62km2 (15.12%), 193.94km2 (24.52%), 292.33km2 (36.95%) and 185.20km2 (23.41%). The study, using GIS, has revealed an objective way of understanding and dealing with the impact of hazards in the study area.

Keywords: Hazard; Vulnerability; Risk assessment; GIS; AkwaIbom State. (search for similar items in EconPapers)
Date: 2014
References: Add references at CitEc
Citations:

Downloads: (external link)
http://asianonlinejournals.com/index.php/AREES/article/view/669/663 (application/pdf)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:aoj:areaes:v:1:y:2014:i:1:p:1-4:id:669

Access Statistics for this article

More articles in Asian Review of Environmental and Earth Sciences from Asian Online Journal Publishing Group
Bibliographic data for series maintained by Sara Lim ().