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Transport solide en Loire moyenne lors des crues justification des mesures in situ et quantification = Sediment gauging during flood events in the Middle Loire Rationale and results Gautier, J.-N.; Rodrigues, S.; Peters, J.J.; Peeters, P.; Jugé, P. (2008). Transport solide en Loire moyenne lors des crues justification des mesures in situ et quantification = Sediment gauging during flood events in the Middle Loire Rationale and results. Houille blanche 5: 71-78. http://dx.doi.org/10.1051/lhb:2008058 In: La Houille Blanche. Société Hydrotechnique de France: Grenoble. ISSN 0018-6368; e-ISSN 1958-5551, meer

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Beschikbaar in	Auteurs
Waterbouwkundig Laboratorium: Digitale documenten (JJP) 256919 [ jjpeters ]

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Trefwoorden

Earth sciences > Geology > Geomorphology > Fluvial morphology Physics > Mechanics > Hydraulics Surveys Transport > Sediment transport

Author keywords

France, Loire R.

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Project	Top | Auteurs
Loire river sediment studies

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Auteurs		Top
Gautier, J.-N. Rodrigues, S. Peters, J.J., meer	Peeters, P. Jugé, P.

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Abstract

A hydraulic and sediment transport survey campaign was organised in March 2007 on the Loire River, at the Bréhémont site. The aim was to collect data useful for the understanding of fluviomorphological mechanisms. A survey procedure, established at the end of the 1960’s and relying on a follow-up bathymetric surveys and ancient sediments samplers was combined with modern technologies such as DGPS satellite positioning and ADCP flow gauging. The survey campaign allowed quantifying the sediment transport rates of the size fractions larger than 50 microns. The results confirm the earlier made hypothesis concerning the existence of a sediment load moving close to the bottom and distinct from the suspended load as described in the theories. This load was called “ morphological ” and is composed of solids having sizes between those of the river bed and those moving in suspension at higher elevations. This statement, made on the basis of surveys on other large streams in Africa, Asia and the America’s questions the concepts on which have been based the majority of the sediment transport theories. The present surveys show that campaigns as these are necessary in order to comprehend the processes, a condition prior to investigating solutions.

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