Turbulence measurements in a shallow tidal estuary : analysis based on triple decomposition

Suara, K.A., Brown, R.J., & Chanson, H. (2014) Turbulence measurements in a shallow tidal estuary : analysis based on triple decomposition. In The Proceedings of the 19th Australasian Fluid Mechanics Conference, RMIT University, Melbourne, Australia.

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In an estuary, mixing and dispersion are the result of the combination of large scale advection and small scale turbulence which are both complex to estimate. A field study was conducted in a small sub-tropical estuary in which high frequency (50 Hz) turbulent data were recorded continuously for about 48 hours. A triple decomposition technique was introduced to isolate the contributions of tides, resonance and turbulence in the flow field. A striking feature of the data set was the slow fluctuations which exhibited large amplitudes up to 50% the tidal amplitude under neap tide conditions. The triple decomposition technique allowed a characterisation of broader temporal scales of high frequency fluctuation data sampled during a number of full tidal cycles.

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ID Code: 79974
Item Type: Conference Paper
Refereed: Yes
Additional URLs:
Keywords: Turbulence analysis, Triple decomposition, Reynolds averaging, Field experiment, Estuary, Tide, Resonance, Mixing and advection
ISBN: 9780646596952
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014 [please consult the authors]
Deposited On: 14 Jan 2015 00:15
Last Modified: 20 Feb 2015 01:12

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