IGB

Connexion

(Article of periodic en Anglais - 2013)

Document title

GIS-based hydrological zones and soil geo-database of Ethiopia

Authors(s) and Affiliation(s)

BERHANU B. (1 3) ; MELESSE A.M. (2) ; SELESHI Y. (3) ;
(1) Ethiopian Inst. of Water Resources (EIWR), Univ., Addis Ababa, ETHIOPIE
(2) Dep. of Earth and Environment, Florida international Univ., Miami, ETATS-UNIS
(3) Dep. of Civil Engineering, Addis Ababa Inst. of Technology (AAiT), Addis Ababa, ETHIOPIE

Abstract

The AA. analyzed soils, topography and climatic data from over 1100 stations in Ethiopia. They setup a spatial model that uses rainfall, slope, evapotranspiration and runoff. Analysis based on a weighted overlay technique within ArcGIS using data from various sources and scales was conducted. A regression equation was used to develop the soil geo-database, scale factors of soil, land slope and climatic layers. An iterative analysis and expert knowledge was also used to determine the weights of the layers for the hydrological zoning. Results from this study provide valuable information about the hydrological zones of Ethiopia and an improved spatial soil database at 1:250,000 scale for the first time. Generated maps and zones will improve the hydrological understanding of the various regions of the country

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2013, vol. 104 [pp. 21-31]

Bibliographic references : 44 ref.

Collation : 7 fig., 6 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2012.12.007

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
Refdoc record number (ud4) : 27624619 : Permanent link - XML version
Powered by Pxxo