Descriptive analysis of the turbulent velocity profiles for two cross sections in a river confluence zone

TL;DRAbstract

Increasing demands on water supplies, along with concerns about non-point source pollution, and water quality-based ecological factors all point to the need for observing stream flow perturbations and pollutant discharges at higher resolution than has been practical until now. This work presents a rapidly deployable Networked Infomechanical System (NIMS RD) technology for observing spatiotemporal variability in hydraulic and chemical properties across stream channels. NIMS RD is comprised of two supporting towers and a suspension cable delivering power and Internet connectivity for controlling and actuating the tram-like NIMS unit. The NIMS unit is capable of raising and lowering a payload of sensors, allowing a preprogrammed or data-actuated adaptive scan to be completed across a stream channel. This work examines velocity vectors in a real river system using an acoustic Doppler velocimeter (ADV) sensor with positioning controlled by the NIMS RD apparatus. Raster scans providing veloc

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