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(Article of periodic en Anglais - 2014)

Document title

Selecting best mapping strategies for storm runoff modeling in a mountainous semi-arid area

Authors(s) and Affiliation(s)

SANCHEZ-MORENO J.F. (1) ; JETTEN V. (1) ; MANNAERTS C.M. (2) ; DE PINA TAVARES J. (3) ;
(1) Dept. of Earth System Analysis, Fac. of Geo-Information Science and Earth Observation (ITC), Univ. of Twente, Enschede, PAYS-BAS
(2) Dept. of Water resources, Fac. of Geo-Information Science and earth Observation (ITC), Univ. of Twente, Enschede, PAYS-BAS
(3) National Inst. of Agrarian Research of Cap Verde, Praia, CAP-VERT

Abstract

The study area was Ribeira Seca, a 90 km2 catchment located in Santiago Island, Cape Verde (West Africa), a semi-arid country subject to scarce but extreme rainfall during the short tropical summer monsoon. To evaluate the influence of rainfall on runoff and erosion, 2 storm events with different intensity and duration were considered. Ordinary kriging (OK) and kriging with external drift (KED) inputs produced similar results, with the latter being closer to the observed hydrographs. The highest soil losses were obtained with KED. To improve the results of soil loss predictions, higher accurate spatial information on the processes is needed; however, spatial information of input soil properties alone is not enough in complex landscapes. The results demonstrate the importance of selecting the appropriate mapping strategy to obtain reliable runoff and erosion estimates

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2014, vol. 39, no8 [pp. 1030-1048]

Bibliographic references : 1 p.

Collation : 13 fig., 5 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3501

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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