3 documents found, page 1 of 1
Fluorescent quinine-based tracking techniques for measurement of open-channel s...
Zehsaz, Soheil; L. M. P. de Lima, João; Isidoro, Jorge; de Lima, M. Isabel P.; Martins, RicardoThis study presents techniques based on the use of fluorescent quinine as a visual tracer for surface flows, to assess surface flow velocities in channels and streams under low luminosity conditions. Fieldwork was conducted in three open channels, with different hydraulic characteristics. A quinine solution, in both liquid and solid (ice cube) forms, was applied on the water flow surface and an Unmanned Aerial ...
Estimating sheet flow velocities using quinine as a fluorescent tracer: bare, m...
Zehsaz, Soheil; de Lima, João L. M. P.; de Lima, M. Isabel P.; MGP Isidoro, Jorge; Martins, RicardoWhen direct flow velocity measurements are not feasible, the use of tracers can be a valuable tool. In the present study, both laboratory and field experiments were conducted to evaluate the applicability of quinine as a fluorescent tracer for estimating mean sheet flow velocities in different ambient light and surface morphology conditions. Quinine excels in low-light conditions when exposed to UVA light. This...
Using quinine as a fluorescent tracer to estimate overland flow velocities on b...
de Lima, João L. M. P.; Zehsaz, Soheil; de Lima, M. Isabel P.; Isidoro, Jorge M. G. P.; Jorge, Romeu Gerardo; Martins, RicardoThis study presents a tracer technique based on the fluorescent properties of quinine to help on the visualization of shallow flows and allow a quantitative measurement of overland flow velocities. Laboratory experiments were conducted to compare the traditional dye tracer and thermal tracer techniques with this novel fluorescent (quinine) tracer by injecting a quinine solution and the other tracers into shallo...