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(Article of periodic en Anglais - 2013)

Document title

Watershed fragmentation in Coastal Plain Rivers

published at : Changing fluvial systems

Authors(s) and Affiliation(s)

PHILLIPS J.D. (1) ;
(1) Dept. of Geography, Univ. of Kentucky, Lexington, ETATS-UNIS

Abstract

This study explores the origin of 15 small coastal watersheds (SCWs) confined entirely to the lower Coastal Plain, which lie between the watersheds of the major rivers flowing across the Texas Coastal Plain. The relationship between SCWs and larger rivers was examined to determine whether the SCWs developed independently of the larger rivers, or became separated from them due to drowning of confluences by sea level rise or watershed fragmentation avulsions. None of the SCWs show evidence of developing independently of larger drainages. Avulsions are generally common in the study area, but for a channel shift to result in watershed fragmentation 3 conditions must occur. First, a successful avulsion (i.e., the new channel becomes dominant) must occur, involving the entire reach from the avulsion site to the river mouth. Second, hydraulic connection between the newer and older channels must be lost. Third, the abandoned channel must receive sufficient tributary input or upland run-off to maintain its path to the coast and avoid infilling

Source

Thematical fascicle

published at : Physical geography / ISSN 0272-3646

Editor : Taylor & Francis, Abingdon - ROYAUME-UNI (1980)

Millesime : 2013, vol. 34, no 4-5 [pp. 273-292]

Bibliographic references : 33 ref.

Collation : fig., tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 20106

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1080/02723646.2013.848392

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