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(Article of periodic en Anglais - 2011)

Document title

Runoff generation and sediment yield on homogeneous dune slopes: scale effect and implications for analysis

Authors(s) and Affiliation(s)

KIDRON G.J. (1) ;
(1) Inst. of Earth Sciences, Hebrew Univ., Jerusalem, ISRAEL

Abstract

Runoff and sediment yield collected on dune slopes over a wide range of plot sizes during 1990–1994 in the Negev Desert showed that the contributing area was mainly confined to a narrow belt at the bottom of the slopes. It was therefore hypothesized that the very short rain bursts, capable of runoff generation, may result in a scale effect (SE). Based on the intermittent character of the rain spells capable of runoff generation it is argued that SE is an inherent outcome of the rain properties. Yet, it is further argued that the magnitude of the SE is surface-dependent. As a result, it is argued that the conventional way for runoff and sediment yield presentation as mass per unit area implies theoretical misconceptions and may cause gross overestimation in extrapolation and the presentation of runoff and sediment yield in mass per unit width of the slope is suggested. The accuracy of the 2 extrapolation methods are compared to the actual runoff and sediment yield collected in the field and the results are discussed

Source

Article of periodic

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

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

Millesime : 2011, vol. 36, no13 [pp. 1809-1824]

Bibliographic references : 2 p.

Collation : 9 fig., 11 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2203

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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