Walking further downstream, movement on the opposite bank caught my eye.
A downstream movement of the local ignition point with increasing flow velocity is observed.
Preference for downstream movement was less pronounced for chironomids, Eucyclops serrulatus and Gammarus pulex.
Contrary to the second prediction, downstream movement was further delayed by the addition of a light stimulus.
The downstream movement of the plunge line is advection dominated, while its upstream movement seems to respond to a baroclinic response of the confluence.
In particular, Baetis rhodani and Hydropsyche spp. exhibited a clear preference for downstream movement by drifting or crawling and seldom displayed upstream or lateral movement.
Using a position-based probability function that accounts for image noise and preference for downstream movement, outputs include instantaneous and mean platelet velocities, periods of motion and stasis, and bond dissociation kinetics.
The influence of a continuous light source on the downstream movement of brown trout (Salmo trutta) as they encountered accelerating velocities created by a constricted channel in an experimental flume under three discharge regimes was assessed.
The rock barrier of the gorge at Bingen divided navigation into two sections: predominantly upstream traffic by seagoing vessels to Cologne and predominantly downstream movement of commodities brought first across the Alpine passes from Basel to Mainz and Frankfurt am Main.
The data highlight the importance of temperature for the modulation of downstream movement, as well as the potential deleterious impact of the anthropogenic increase in river temperature below the spawning and juvenile habitat in the Allier tributary on the success of downstream migration.
Except for the temperature distribution within the cross-sections, little difference in results is seen for the two double-track tunnels with the low ventilation velocity (0.5 m/s), whereas higher temperature levels and a faster downstream movement of hot gases are observed in the single-track tunnel.
