IGB

Connexion

(Article of periodic en Anglais - 2014)

Document title

Large wood budget and transport dynamics on a large river using radio telemetry

Authors(s) and Affiliation(s)

SCHENK E.R. (1) ; MOULIN B. (2) ; HUPP C.R. (1) ; RICHTER J.M. (3) ;
(1) US Geological Survey, Reston, ETATS-UNIS
(2) AEMGEO - CNRS UMR 5600 - Environnement Ville et Société, Ecole Normale Sup., Lyon, FRANCE
(3) US Fish and Wildlife Service, Roanoke River National Wildlife Refuge, Windsor, ETATS-UNIS

Abstract

This study used 290 radio frequency identification tagged (RFID)large wood (LW) and 54 metal (aluminum) tagged LW, to quantify the percent of in-channel LW that moves per year and what variables play a role in LW transport dynamics. The high rate of transport and distance traveled is likely due to the lack of interaction between LW floating in the channel and the channel boundaries, caused primarily by the width of the channel relative to length of the LW. LW transport and logjam dynamics are complicated at high flows as pieces form temporary jams that continually expand and contract. Unlike most other studies, key members that create a logjam were defined more by stability than jam size or channel/hydrologic conditions. Finally, using an existing geomorphic database for the river, and data from this study, the AA. were able to develop a comprehensive LW budget showing that 5% of the in-channel LW population turns over each year (input from mass wasting and fluvial erosion equals burial, decomposition, and export out of system) and another 16% of the population moving within the system

Source

Article of periodic

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

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

Millesime : 2014, vol. 39, no4 [pp. 487-498]

Bibliographic references : 1 p.

Collation : 10 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.3463

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
Refdoc record number (ud4) : 28518695 : Permanent link - XML version
Powered by Pxxo