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(Article of periodic en Anglais - 2012)

Document title

High spatial resolution mapping of surface velocities and depths for shallow overland flow

Authors(s) and Affiliation(s)

LEGOUT C. (1) ; DARBOUX F. (2) ; NÉDÉLEC Y. (3) ; HAUET A. (4) ; ESTEVES M. (5) ; RENAUX B. (2) ; DENIS H. (6) ; CORDIER S. (7) ;
(1) UJF-Grenoble 1/CNRS/G-INP/IRD, LTHE UMR 5564, Grenoble, FRANCE
(2) INRA, UR0272, UR Science du sol, Centre de recherche, Orléans, FRANCE
(3) CETE du Sud-Ouest / Dep. Lab. Bordeaux / Groupe Géotechnique, Risques et Bâtiments, Bordeaux, FRANCE
(4) EDF-Centre Hydrométéorologique Pyrénées Massif Central, Toulouse, FRANCE
(5) IRD/UJF-Grenoble 1/CNRS/G-INP/, LTHE UMR 5564, Grenoble, FRANCE
(6) CNRS/UJF-Grenoble 1/G-INP/IRD, LTHE UMR 5564, Grenoble, FRANCE
(7) CNRS/U Orléans/MAPMO, Orléans, FRANCE

Abstract

The AA. present the coupling of 2 techniques allowing to obtain spatial data of flow depth and surface velocity measurements for water depths ranging from a few millimetres to a few centimetres. The large scale particle image velocimetry (LSPIV) procedure was a robust method to obtain surface velocity measurements with a relatively low sensitivity to parameter changes. Comparison with measurements performed with hot film anemometer and salt velocity gauge showed that LSPIV surface velocities were representative of the flow. Water depths measured with the laser scanner were also in good agreement with single-point measurements performed with a dial indicator. Spatially-distributed flow rates could be computed by combining both presented techniques with a mean relative error less than 20%

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, no9 [pp. 984-993]

Bibliographic references : 1 p.

Collation : 10 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3220

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
Refdoc record number (ud4) : 26847095 : Permanent link - XML version
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