THE RE-EVALUATION OF HEAT BALANCE IN LAKE VANDA, VICTORIA LAND, ANTARCTICA

Abstract

The heat balance of Lake Vanda, Victoria Land, Antarctica in 1971-72 austral summer season is evaluated. Terms of heat gain consist of solar and sky radiation and sensible heat exchange with atmosphere, and geothermal activity or influx of thermal waters are not detected. Solar radiation is consumed as follows; reflection 39.8%, internal melting of lake ice 3.6%, penetration through lake ice 6.9%, and 49.7% for evaporation and back radiation. Apparent heat transfer coefficient in the upper layer of the lake is about 6 times of molecular diffusivity, and is related with the step-like structure of water temperature profile.