The survey-based annual cycle of water temperature and the temperature of the maximum density in Lake Baikal

Abstract

Year-round hydrological studies of water temperature throughout the Baikal water column, which were conducted in 1973-1974, describe in a new way the methods for measuring the Baikal water temperature and the temperature of the maximum density (TMD). To highlight the TMD zone, we set some its limits, for example 0,25Ct_md+t_md. Notably, the spring thermal bar heats the water in the lake (the weather is calm): the thermal bar tends to maximum values and the autumn thermal bar, 0,25Ct_md+t_md, cools the water in the lake (the weather is stormy): the thermal bar tends to its minimum values.