Study of Natural Phenomenon of Thermal Bar: Field Observations, Laboratory,and Mathematical Modelling

The paper presents an overview of the works on the study of the natural phenomenon of the thermal bar (thermobar). The results of field observations of this phenomenon in lakes in spring and autumn are presented, giving an idea of the thermo-hydrodynamic processes in water bodies during these periods. In works on laboratory modeling of the thermal bar, the instability mechanisms leading to its occurrence and features of its movement are discussed. Theoretical works are considered, where various approaches to modeling the thermal bar are discussed, including modern hydrodynamic models. Special attention is paid to works on studying this phenomenon at the Department of Physics of the Sea and Land Waters of the Physics Faculty of the Moscow State University.