Author(s): F. Lopez; C. M. Garcia; C. J. Z.; H. H. Prendes

Linked Author(s): Carmen Elena López Fabara

Keywords: Coustic Doppler Current Profiler (ADCP); Large river; Mean flow and turbulence structure

Abstract: The use of Acoustic Current Doppler Profilers (ADCP) in hydrometry defines a new era in river flow measurements, not only because of its simplicity and relatively low cost, but mainly because it allows for the quantification of the flow field in space and time, providing thus information that is impossible to obtain through conventional methods. In this way, variables and flow characteristics in large rivers can be estimated that highly contribute to a better understanding of fluvial dynamics, as well as to the spatial and temporal resolution of the mean flow and the turbulence structure as well as the associated transport processes. This work presents results of field measurements on different cross-sections of the ParanaRiver, Argentina. Processing and analysis of the information allowed, on the one side, for a clearer understanding of the principles of operation of the equipment, hence defining its versatility, potentiality and limitations, and on the other side, for the estimation of hydraulic variables (turbulence intensities, shear velocities, relative roughness, resistance coefficients, etc. ) that coincide fairly well with observations using traditional methods at much higher operational costs.

DOI:

Year: 1999