Journal
FLOW MEASUREMENT AND INSTRUMENTATION
Volume 19, Issue 5, Pages 307-313Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.flowmeasinst.2008.03.003
Keywords
turbulence; sub-tropical estuary; acoustic Doppler velocimetry (ADV); post-processing; despiking; velocity signal processing
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Estuarine mixing and dispersion are unsteady turbulent processes. The present understanding of estuary turbulence remains limited because of limited suitable measurement techniques and a lack of long-duration high-frequency studies of turbulent properties. Herein turbulence data were recorded in a small estuary at high-frequency using acoustic Doppler velocimetry (ADV). The data sets were analysed, and the results demonstrated that acoustic Doppler velocimetry data cannot be used without suitable post-processing in unsteady estuary flows. Even classical despiking techniques are not simply applicable. A new ADV data post-processing technique is developed herein for turbulence analysis of estuarine flows, and it is tested for several field studies. (C) 2008 Elsevier Ltd. All rights reserved.
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