New Zealand Journal of Marine and Freshwater Research abstracts

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Flushing time calculations for the Upper Waitemata Harbour, New Zealand

B. L. WILLIAMS

Water Quality Centre
Ministry of Works and Development
Private Bag, Hamilton
New Zealand

Abstract The flushing time of the Upper Waitemata Harbour is calculated using a box model based on tidal excursion segmentation. The model coefficients quantifying intersegment solute exchanges are calibrated using salinity and dye data. The computed flushing time of 9 to 11 tidal cycles contrasts with 11 to 13 tidal cycles calculated by the freshwater fraction method and 4.5 tidal cycles calculated by the modified tidal prism method. Reasons for these differences are discussed.

Keywords estuaries; flushing time; Upper Waitemata Harbour; mathematical modelling

New Zealand Journal of Marine and Freshwater Research, 1986, Vol. 20: 455-465 Received 12 April 1985: accepted 8 January 1986

PDF file of entire paper: medium quality (685K); (scanned from paper original: notes about this process)

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