IGB

Connexion

(Article of periodic en Anglais - 2009)

Document title

Valley morphology and sediment cascades within a wetland system in the KawaZulu-Natal Drakensberg Foothills, eastern South Africa

Authors(s) and Affiliation(s)

GRENFELL M.C. (1) ; ELLERY W.N. (2) ; GRENFELL S.E. (3) ;
(1) Dep. of Geography, Univ., Exeter, ROYAUME-UNI
(2) Dep. of Environmental Science, Rhodes Univ., Grahamstown, AFRIQUE DU SUD
(3) Dep. of Geography, Rhodes Univ., Grahamstown, AFRIQUE DU SUD

Abstract

In this paper, the AA. examine the long-term (millennia), large-scale mediation of connectivity by geological and geomorphological controls, highlighting the relationship between drainage disconnectivity and wetland origin, and appraise ongoing rehabilitation efforts in light of the long-term natural dynamic. The paper uses a wetland system in the KwaZulu-Natal Drakensberg Foothills, as a case study, focusing particular attention on part of the system in which cut-and-fill processes are evident, and proceeds, using observations from this and other similar wetland systems in the region, to discuss successive breaks in connectivity with increasing spatial scale and time. Implications for valley morphology are discussed, and channel incision is shown to play an important role in long-term valley and wetland morphodynamics in certain geomorphological settings, creating a diversity of geomorphological features and hydrological regimes

Source

Article of periodic

published at : Catena / ISSN 0341-8162

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

Millesime : 2009, vol. 78, no1 [pp. 20-35]

Bibliographic references : 1,5 p.

Collation : 13 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2009.02.004

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2009
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