Preliminary Measurements of Turbulence and Environmental Parameters in a Sub-Tropical Estuary of Eastern Australia |
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Authors: | Email author" target="_blank">Hubert?ChansonEmail author Richard?Brown John?Ferris Ian?Ramsay Kevin?Warburton |
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Institution: | (1) Department of Civil Engineering, The University of Queensland, Brisbane, QLD, 4072, Australia;(2) School of Mechanical, Manufacturing and Medical Engineering, Queensland University Technology, Brisbane, 4000, Australia;(3) Water Quality Monitoring Group, Queensland Government Environmental Protection Agency, Indooroopilly, QLD, 4068, Australia;(4) Waterways Scientific Services, Queensland Government Environmental Protection Agency, Indooroopilly, QLD, 4068, Australia;(5) Department of Zoology and Entomology, The University of Queensland, Brisbane, QLD, 4072, Australia |
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Abstract: | In natural systems, mixing is driven by turbulence, but current knowledge is limited in estuarine zones where predictions
of contaminant dispersion are often inaccurate. A series of detailed field studies was conducted in a small sub-tropical creek
in eastern Australia. Hydrodynamic, physio-chemical and ecological measurements were conducted simultaneously to assess the
complexity of the estuarine zone, notably the interactions between turbulence and environment. The measurements were typically
performed at high frequency over a tidal cycle. The results provide an original data set to complement long-term monitoring
and a basis for a more detailed study of mixing in sub-tropical systems. Unlike many long-term observations, velocity and
water quality scalars were measured herein with sufficient spatial and temporal resolutions to determine quantities of interest
in the study of turbulence, while ecological indicators were sampled systematically and simultaneously. In particular the
results yielded contrasted outcomes, and the finding impacts on the selection process for key water quality indicators. |
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Keywords: | ecology estuary field experience tropical stream turbulence water quality |
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