New Zealand Journal of Marine and Freshwater Research abstracts

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EVIDENCE FOR SEICHES AND SHORT-PERIOD INTERNAL WAVES IN LAKE TEKAPO, SOUTH ISLAND, NEW ZEALAND

N. M. RlDGWAY

New Zealand Oceanographic Institute, Department of Scientific and Industrial Research, Wellington

Abstract Vertical temperature profiles obtained in April 1971 along the length of Lake Tekapo suggest the presence of an internal seiche. A simple model gives a theoretical period of 48 h. Successive vertical temperature profiles made at 5-min intervals over 70 min showed in-phase fluctuations in the isotherms both above and below the thermocline. The fluctuations had an average period of 12.7 min and could have been generated by a surface sieche operating between the southern end of the lake and Motuariki Island, situated about 7.6 km from the southern end.

N.Z. Journal of Marine and Freshwater Research 8 (3): 541-50
(Received for publication 6 November 1973)

PDF file of entire paper: medium quality (517K); (scanned from paper original: notes about this process)

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