Recherche documentaire
Trier par :
-
mesure de débit en rivière par station radar hauteur / vitesse selon la méthode de la vitesse témoinThollet, F. / Le Coz, J. / Dramais, G. / Nord, G. / Le Boursicaud, R. / Jacob, E. / Buffet, A. / Pierrefeu, G. - 2017In recent years, stage / velocity radar stations have been installed in France. This type of stations provides measurements of water level and surface velocity at a fixed point of the cross-section. Discharge is calculated as the product of the wetted area and cross-sectional average velocity;...Contributeur (s):
-
Mansanarez, V. / Le Coz, J. / Renard, B. / Lang, M. / Pierrefeu, G. / Le Boursicaud, R. / Pobanz, K. - 2017Stage-fall-discharge (SFD) rating curves are traditionally used to compute streamflow records at sites where the energy slope of the flow is variable due to variable backwater effects. Building on existing Bayesian approaches, we introduce an original hydraulics-based method for developing SFD...Contributeur (s):
-
Mansanarez, V. / Le Coz, J. / Renard, B. / Lang, M. / Pierrefeu, G. / Vauchel, P. - 2016Stage-fall-discharge (SFD) rating curves are traditionally used to compute streamflow records at sites where the energy slope of the flow is variable due to variable backwater effects. We introduce a model with hydraulically interpretable parameters for estimating SFD rating curves and their...Contributeur (s):
-
Hauet, A. / Le Coz, J. / Dramais, G. / CarrÉ, C. / Legras, D. / Pierrefeu, G. / Godayer, C. - 2015Cet article présente deux techniques innovantes permettant de mesurer en continu mais partiellement la vitesse d'un écoulement fluvial, et d'en déduire le débit : les profileurs Doppler fixes horizontaux (H-aDcp) mesurant les vitesses à cote fixe en travers de la section ; et l'...Contributeur (s):
-
Le Coz, J. / Pierrefeu, G. / Brochot, J.F. / Paquier, A. / Chastan, B. / Lagouy, M. - 2007International audienceContributeur (s):
-
Le Coz, J. / Larrarte, F. / Saysset, G. / Pierrefeu, G. / Brochot, J.F. / Marchand, P. - 2015Les profileurs acoustiques de vitesse par effet Doppler (aDcp, pour " acoustic Doppler current profiler ") sont de plus en plus utilisés pour le jaugeage des cours d'eau en France. Après un bref rappel du principe et de la mise en oeuvre de l'aDcp, les actions du groupe d'...Contributeur (s):
-
Le Coz, J. / Pierrefeu, G. / Brochot, J.F. / Saysset, G. / Marchand, P. - 2015L'efficacité de l'aDcp (acoustic Doppler current profiler) tend à en faire un outil privilégié pour le jaugeage des cours d'eau, dans les cas où son déploiement est possible. Les mesures de débit par aDcp sont la plupart du temps cohérentes avec les méthodes conventionnelles....Contributeur (s):
-
Dramais, G. / Blanquart, B. / Le Coz, J. / Pierrefeu, G. / Hauet, A. / Atmane, D. / Pobanz, K. - 2013International audienceContributeur (s):
-
Le Coz, J. / Pierrefeu, G. / Paquier, P. - 2015Fixed 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 velocities measured by the H-ADCP along a horizontal profile across the section. This paper reports a...Contributeur (s):
-
Le Coz, J. / Hauet, A. / Pierrefeu, G. / Dramais, G. / Camenen, B. - 2015Flash-floods that occur in Mediterranean regions result in significant casualties and economic impacts. Remote image-based techniques such as Large-Scale Particle Image Velocimetry (LSPIV) offer an opportunity to improve the accuracy of flow rate measurements during such events, by measuring the...Contributeur (s):
-
Le Coz, J. / Dramais, G. / Hauet, A. / Pierrefeu, G. - 2015Flash-floods that occur in the southern Mediterranean region of France result in significant casualties and economic impacts. Remote techniques such as image analysis offer an opportunity to improve the accuracy of flow rate measurements during such events, by measuring the surface flow velocities...Contributeur (s):
-
Moore, S. / Le Coz, J. / Pierrefeu, G. / Perret, C. / Hurther, D. / Paquier, A. - 2015Measurements of river velocity obtained using fixed side-looking Acoustic Doppler Current Profilers are compared to those obtained using regular, vertically-oriented Acoustic Doppler Current Profilers during gauging transects. The results presented were obtained at two French study sites: the Saône...Contributeur (s):
-
Hauet, A. / Le Coz, J. / Dramais, G. / Carré, C. / Legras, D. / Pierrefeu, G. / Godayer, C. - 2015This article presents two innovative techniques for discharge monitoring based on continuous though partial velocity measurements of river flows : fixed horizontal Doppler profilers (H-aDcp) measuring velocities at a constant elevation across the section ; and LSPIV image analysis measuring...Contributeur (s):
-
Le Coz, J. / Larrarte, F. / Saysset, G. / Pierrefeu, G. / Brochot, J.F. / Marchand, P. - 2015Acoustic 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 user group (Groupe Doppler) are presented, in particular as regards measurement uncertainty, mobile-bed...Contributeur (s):
-
Le Coz, J. / Pierrefeu, G. / Paquier, P. - 2015Fixed 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 velocities measured by the H-ADCP along a horizontal profile across the section. This paper reports a...Contributeur (s):