Lake Vanda.

Work in this lake was concentrated in the region above 160 feet. On the basis of measurements made by Wellman and Wilson in 1961 this region appeared to behave in an anomalous manner.

Very detailed measurement of the temperature, temperature gradient, density and electrical conductivity shoved that above 150 feet the lake can be divided into 13 horizontal layers. Within each layer the temperature, density and electrical conductivity remain constant within the limits of measurement. The layers are between 3 and 70 feet thick and are separated by "transition regions" each about one foot thick. The existence of the layers is difficult to explain and further field, laboratory and theoretical work needs to be done.