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(Article of periodic en Anglais - 2013)

Document title

Reduced channel morphological response to urbanization in a flood-dominated humid tropical environment

Authors(s) and Affiliation(s)

PHILLIPS C.B. (1) ; SCATENA F.N. (1) ;
(1) Dep. of Earth and Environmental Science, Univ. of Pennsylvania, Philadelphia, ETATS-UNIS

Abstract

This study investigates the long-term effects of urbanization on channel morphology in the humid sub-tropical region of Puerto Rico, an area characterized by frequent high-magnitude flows, and steep coarse-grained rivers. Grain size, low-flow channel roughness, and the hydraulic geometry of streams across a land-use gradient that ranges from pristine forest to high density urbanized catchments are compared. Decades of development has resulted in increased fine sediment and anthropogenic debris in urbanized catchments. Overall, this study indicates that the morphologic changes that occur in response to urban runoff are less in channels that are already subject to frequent large magnitude storms. Furthermore, this study suggests that developing regions in the humid tropics shouldn't rely on temperate analogues to determine the magnitude of impact of urbanization on stream morphology

Source

Article of periodic

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

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

Millesime : 2013, vol. 38, no9 [pp. 970-982]

Bibliographic references : 2 p.

Collation : 8 fig., 4 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3345

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