Le Coz, J., Larrarte, F., Saysset, G., Pierrefeu, G., Marchand, P.
Acoustic Doppler current profilers (aDcp) are increasingly used for gauging streams in France. After an overview of the principle of operation and deployment techniques, the efforts of the French...
Hauet, A., Le Coz, J., Dramais, G., Carré, C., Legras, D., Pierrefeu, G., ...
This article presents two innovative techniques for discharge monitoring based on continuous though partial velocity measurements of river flows : fixed horizontal Doppler profilers (H-aDcp)...
CHU, F, LUND, E, LITTREAL, P, RUCK, K, HARVEY, E, LE COZ, J, ...
The kinetics and efficiency of sterol production and bioconversion of phytosterols in two heterotrophic protists Oxyrrhis marina and Gyrodinium dominans were examined by feeding them two different...
Mesures hydrologiques par profileur Doppler (aDcp) (2008)
Le Coz, J., Pierrefeu, G., Saysset,G., Brochot, J.F., Marchand, P.
/ Les objectifs principaux de ce guide sont de rassembler l'expérience accumulée par les jaugeurs français sur les profileurs Doppler en rivière, et de contribuer à l'unification des pratiques...
Challenges in hydrometry: some examples from France (2008)
In France, the national stream flow measurement network is ruled by the Ministry of Environment through Regional Environment Agencies (DIREN) and Flood Forecast Services (SPC/SCHAPI). Other...
Boundary shear stress across a river section from in-situ Doppler profiler measurements (2008)
Le Coz, J., Camenen, K., Paquier, A.
In this paper, a technique for establishing the boundary shear stress distribution in open channel flows is proposed and used. The boundary shear stress along the wetted perimeter of a large river...
Le Coz, J., Larrarte, F., Saysset, G., Pierrefeu, G., Brochot, J.F., Marchand, P.
Acoustic Doppler current profilers (aDcp) are increasingly used for gauging streams in France. After an overview of the principle of opertaion and deployment techniques, the efforts of the French...
Hauet, A., Le Coz, J., Dramais, G., Carré, C., Legras, D., Pierrefeu, G., ...
This article presents two innovating techniques for discharge monitoring based on continuous though partial velocity measurements of river flows: fixed horizontal Doppler profilers (H-aDcp) measuring...
Hauet, A., Le Coz, J., Lang, M., Dramais, G., Braud, I., Pierrefeu, P.
Conventional stream gauging techniques are not adapted to flashflood measurement because: They are intrusive : high flow velocities and floating debris endanger the operators and the equipment. They...
Evaluation of river discharges monitored by a fixed side-looking Doppler profiler (2008)
Le Coz, J., Pierrefeu, G., Paquier A.
Fixed side-looking Doppler current profilers (H-ADCP) recently emerged as an innovating technique for the continuous monitoring of river discharges. The discharge can be computed from the flow...
Note technique : Contrôle de courantomètres dans un bassin de carène (2008)
Le Barbu, E, Dramais, G., Le Coz, J.
/ Les courantomètres existants sont contrôlés régulièrement par les équipes d'hydrométrie qui les exploitent. Les constructeurs de capteurs proposent également un certain nombre de contrôles...
Modélisation du flux sédimentaire pendant une chasse hydraulique (Arc en Maurienne) (2008)
Camenen, B., Jodeau, M., Le Coz, J.
/ Les chasses de barrages ont un fort impact sur la morphologie et l'écologie des rivières. Un modèle conceptuel est présenté pour estimer l'évolution d'un nuage de matières en suspension...
Conceptual modelling of the sediment flux during a flushing event (Arc en Maurienne, France) (2008)
Camenen, B., Jodeau, M., Le Coz, J.
Dam flushing events have a significant impact on the morphology and ecology of the downstream part of the river. A conceptual model is proposed to estimate the evolution of the suspended sediment...
Jodeau, M., Paquier, A., Hauet, A., Le Coz, J., Thollet, F., Fournier, T.
In the context of a reservoir release, this paper aims at understanding the impact of a flood wave on the morphology of a gravel bar. A comprehensive field survey was conducted in the Arc River...
Jodeau, M., Hauet, A., Paquier, A., Le Coz, J., Dramais, G.
Large Scale Particle Image Velocimetry (LS-PIV) is used to measure the surface flow velocities in a mountain stream during high flow conditions due to a reservoir release. A complete installation...
Paquier, A., Camenen, B., Le Coz, J., Richard, D., Mathys, N., Laigle, D.
/ Les études de transport de sédiments dans le lit des rivières nécessitent des traitements adaptés aux objectifs poursuivis. Les cours d'eau à forte pente ont des particularités qui leur sont...
River morphological changes during floods: an overview of recent research (2007)
Paquier, A., El Kadi, K., Recking, A., Le Coz, J.
The basic components of a numerical model to calculate morphological changes are well known: methods to calculate discharges of sediment transported by the flow, methods to estimate rates of erosion...
Raccasi, G., Le Coz, J., Dussouillez, P., Dramais, G., Provansal, M.
In the modern management of the water courses the quantification of the flow of suspended matters is particularly important. SPM constitute about 90% of the sedimentary provisions to the river mouth...
Fonctionnement hydro-sédimentaire des bras morts de rivière alluviale (2007)
This PhD work is focused on ordinary hydro-sedimentary processes in channels abandoned by alluvial rivers. Generally indeed, the permanence of ecological restoring operations depends on the...
Emplois de l'aDcp en rivière : une revue de synthèse (2007)
Le Coz, J., Chastan, B., Védié, F., Dramais, G.
For the last fifteen years, acoustic Doppler current profilers (aDcp) have been increasingly used to measure river discharge. Originally designed for oceanographical applications, aDcp can provide...
Jaugeage des rivières par aDcp : pour une culture commune (2007)
Le Coz, J., Pierrefeu, G., Brochot, J.F., Saysset, G., Marchand, P.
The aDcp (acoustic Doppler current profiler) is an efficient tool increasingly used for stream gauging when deployment is possible. Most often, aDcp discharge measurements are in good agreement with...
Mean vertical velocity profiles from aDcp river discharge measurement datasets (2007)
Le Coz, J., Pierrefeu, G., Jodeau, M., Paquier, A.
Experimental vertical velocity profiles were extracted from 18 series of aDcp discharge measurements. The campaigns were performed in the Saône river at the CNR Saint-Georges gauging station in...
Suspended-load dynamics during floods in the river Saône, France (2007)
Le Coz, J., Pierrefeu, G., Brochot, J.F., Paquier, A., Chastan, B., Lagouy, M.
With a 30,060 km2 catchment area and a mean annual discharge of 442 m3/s near the confluence in Lyon, the River Saône is the main tributary of the upper French Rhône. The 165 km-long lower reach...
Le Coz, J., Paquier, A., Chastan, B., Dramais, G.
For about fifteen years, the acoustic Doppler current profilers (aDcp) have been increasingly used by hydrometric teams to measure river discharges. Such devices offer opportunities for investigating...
Modélisation du flux sédimentaire pendant une chasse hydraulique (Arc en Maurienne) (2007)
Camenen, B., Jodeau, M., Le Coz, J.
/ Les chasses de barrages ont un fort impact sur la morphologie et l'écologie des rivière. Un modèle conceptuel est présenté pour estimer l'évolution d'un nuage de matières en suspension (MES)...
Open-channel side-cavities: A comparison of field and flume experiments (2006)
Le Coz, J., Brevis, W., Niño, Y., Paquier, A., Rivière, N.
Side-cavities are common along natural and channelized rivers. In this paper, results of flume experiments in a rectangular side-cavity (length to width ratio L/W=2) are compared with field...
Recirculating flow assessment from aDcp, LS-PIV and 2Dh modelling (2006)
Le Coz, J., Hauet, A., Védié, F., Dramais, G., Chastan, B., Paquier, A.
Downstream connection of abandoned channels during floods is a key process for the assessment of water exchange, sedimentation rate and biodiversity in oxbow-lakes. The flow-induced morphological...
ADcp measurements of suspended sediment fluxes in banat rivers, Romania (2006)
Rotaru, E., Le Coz, J., Drobot, R., Adler, M.J., Dramais, G.
Acoustic Doppler current profilers (aDcp) are increasingly used to perform river discharge measurements. Water velocity profiles are computed from the Doppler frequency shift measured between emitted...
Contrôle, mise en oeuvre et suivi des capteurs autonomes DIVER (2005)
Dramais, G., Branger, F., Le Coz, J., Ribot Bruno, J.
/ Les capteurs autonomes « DIVER » (société Van Essen, Pays-Bas) permettent de mesurer en continu des niveaux d`eau en milieu naturel. Prévus pour fonctionner immergés dans un puits...
Flow properties and sediment transfer to abandoned channels (2005)
Le Coz, J., Hauet, A., Paquier, A., Védié, F., Dramais, G., Chastan, B.
The abandoned channels of the Rhône and Ain rivers (France) have been studied for years by geographers, biologists and hydraulicians, in terms of silting-up rate, biodiversity and hydrological...
Fonctionnement hydrosédimentaire de l'Ain et de ses annexes fluviales (2005)
Paquier, A., Bornette, G., Chastan, B., Dramais, G., El Kadi, K., Le Coz, J., ...
This paper sums up the results of a project of the PNRH program 2003-2005 that aimed to define the main features of the changes of oxbows along Ain river. The researches concerned the...
Réponse hydraulique d'un bras mort au signal hydrologique de la rivière (2003)
The abandoned channels of the French rivers Ain and Rhône constitute wetlands that come uppermost in the good working of the "hydrosystems". For recent years, geographers, biologists, hydrologists...