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(Article of periodic en Anglais - 2013)

Document title

Numerical simulation of the impact of sediment supply and streamflow variations on channel grain sizes and Chinook salmon habitat in mountain drainage networks

Authors(s) and Affiliation(s)

NEUPANE S. (1 2) ; YAGER E.M. (2) ;
(1) Dept. of Biosystems and Agricultural Engineering, Oklahoma State Univ., Stillwater, ETATS-UNIS
(2) Dept. of Civil Engineering, Center for Ecohydraulics Research, Univ. of Idaho, Boise, ETATS-UNIS

Abstract

Relatively little is known about hydrograph (shape, peak flow) influence or the relative importance of chronic and episodic hillslope inputs on channel conditions. To better understand these external drivers, the AA. calculated sediment routing through a gravel-bedded river network using a one-dimensional (1D) bedload transport model. The study site, Buckhorn Creek is located in central Idaho. They calculated changes in grain sizes and estimated Chinook salmon habitat suitability caused by a dry year and an extreme flood hydrograph, and chronic (diffusive, overland flow) or pulse (landslide, debris flow) hillslope sediment supplies. It is shown that depending on the magnitudes of flow hydrograph and sediment supply alterations, climate change may induce no differences in grain sizes or very dramatic changes with significant consequences for long-term sustainability

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, no15 [pp. 1822-1837]

Bibliographic references : 3 p.

Collation : 2 fig., 3 tabl., 1 an.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3426

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