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(Article of periodic en Anglais - 2012)

Document title

Measuring gravel transport and dispersion in a mountain river using passive radio tracers

Authors(s) and Affiliation(s)

BRADLEY D.N. (1) ; TUCKER G.E. (2) ;
(1) Geomorphology and Sediment Transport Lab., US Geological Survey, Golden, ETATS-UNIS
(2) CIRES and The Dept. of Geological Sciences, Univ. of Colorado, Boulder, ETATS-UNIS

Abstract

This paper describes results from a large tracer experiment designed to test stochastic transport models. The AA. used passive integrated transponder (PIT) tags to label 893 coarse gravel clasts and placed them in Halfmoon Creek, a small alpine stream near Leadville, Colorado, USA. The PIT tags allow to locate and identify tracers without picking them up or digging them out of the streambed. They also enable to find a very high percentage of the rocks, 98% after 3 years and 96% after the 4th year. The AA. use the annual tracer displacement to test 2 stochastic transport models, the Einstein-Hubbell-Sayre (EHS) model and the Yang-Sayre gamma-exponential model (GEM). They find that the GEM is a better fit to the observations, particularly for slower moving tracers

Source

Article of periodic

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

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

Millesime : 2012, vol. 37, no10 [pp. 1034-1045]

Bibliographic references : 1 p.

Collation : 9 fig., 5 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3223

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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