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(Article of periodic en Anglais - 2010)

Document title

Controls on at-a-station hydraulic geometry in steep headwater streams, Colorado, USA

Authors(s) and Affiliation(s)

DAVID G.C.L. (1) ; WOHL E. (1) ; YOCHUM S.E. (2) ; BLEDSOE B.P. (2) ;
(1) Dep. of Geosciences, Colorado State Univ., Fort Collins, ETATS-UNIS
(2) Dep. of Civil and Environmental Engineering, Colorado State Univ., Fort Collins, ETATS-UNIS

Abstract

Detailed hydraulic measurements were made in nine step-pool, five cascade and one plane-bed reach in Fraser Experimental Forest, Colorado to better understand at-a-station hydraulic geometry (AHG) relations in these channel types. A principal component analysis (PCA) was used to compare the combined variations in all three exponents against five potential control variables: wood, D84, grain-size distribution (σ), coefficient of variation of pool volume, average roughness-area (projected wetted area) and bed gradient. The gradient and average roughness-area were found to be significantly related to the PCA axis scores, indicating that both driving and resisting forces influence the rates of change of velocity, depth and width with discharge.

Source

Article of periodic

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

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

Millesime : 2010, vol. 35, no15 [pp. 1820-1837]

Bibliographic references : 68 ref.

Collation : 12 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.2023

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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