Turbulent Measurements in a Small Subtropical Estuary with Semidiurnal Tides
نویسندگان
چکیده
Since predictions of scalar dispersion in small estuaries can rarely be predicted accurately, new field measurements were conducted continuously at relatively high frequency for up to 50 h per investigation in a small subtropical estuary with semidiurnal tides. The bulk flow parameters varied in time with periods comparable to tidal cycles and other large-scale processes. The turbulence properties depended upon the instantaneous local flow properties. They were little affected by the flow history, but their structure and temporal variability were influenced by a variety of parameters including the tidal conditions and bathymetry. A striking feature of the data sets was the large fluctuations in all turbulence characteristics during the tidal cycle, and basic differences between neap and spring tide turbulence. DOI: 10.1061/ ASCE 0733-9429 2008 134:11 1665 CE Database subject headings: Turbulence; Estuaries; Reynolds stress; Measurement; Tidal currents.
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