New Zealand Journal of Marine and Freshwater Research abstracts

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OBSERVATIONS OF TEMPERATURES IN SOME ROTORUA DISTRICT LAKES

J. Irwin

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

Abstract A preliminary study has been made of temperatures in some of the lakes of the Rotorua district, in the North Island of New Zealand. Seasonal and diurnal variations are discussed. Two main thermal structure types are present. One, in which stratification is irregular or absent, is present in lakes that are relatively shallow and large in area, and the other, in which there is thermal Stratification from early summer to early winter, is present in lakes that are comparatively deep and large in area or else of medium depth and size.

N.Z. Jl mar. Freshwat. Res. 2: 591-605.
(Received for publication 26 April 1968)

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