New Zealand Journal of Marine and Freshwater Research abstracts

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Circulation and mixing in Lake Rotongaio and Lake Okaro under conditions of light to moderate winds: preliminary results

JORG IMBERGER¹

>

ROBERT H. SPIGEL²

¹Centre for Water Research The University of Western Australia Nedlands, Western Australia 6009

²department of Civil Engineering University of Canterbury Christchurch, New Zealand

Abstract Circulation and mixing were studied in Lake Rotongaio from 15 February 1987 to 24 February 1987, using a small portable temperature gradient microstructure profiling instrument, drogues, and an automatic weather station capable of measuring incoming solar radiation, wind speed and direction, air temperature, and relative humidity at 10-minute intervals. Further, both the inflows and the outflows to Lake Rotongaio were measured and the inflow plunging characteristics were documented with two dye releases. Microstructure profiles were measured in Lake Okaro for only one day (26 February 1987), although the portable meteorological station remained installed from 26 February to 4 March 1987. Sufficient data were gathered on Lake Rotongaio to document the dynamics of the mixed layer as well as the mixing internally and at the boundaries.

New Zealand Journal of Marine and Freshwater Research, 1987, Vol. 21: 515-519 0028-8330/87/2103-0515$2.50/0 © Crown copyright 1987 Received 21 April 1987; accepted 29 May 1987

PDF file of entire paper: medium quality (315K); (scanned from paper original: notes about this process)

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