SPECIAL FEATURES OF THE PROCESSES OF HEAT AND MASS TRANSFER UNDER A SHELF GLACIER O. V. Nagornov and O. V. Sergienko UDC 551.51 The reaction of a shelf glacier to possible changes in the global temperature of the ocean is studied. A two-dimensional model of the thermohaline circulation of water under a shelf glacier that is determined by heat and mass transfer on the boundary of the ocean and the glacier is considered. The velocity of the front of the phase transition "glacier-water" is evaluated, and the effect of different boundary conditions on the velocity is studied. Melting/building-up of ice on the lower boundary of a shelf glacier is an integral response to a change in the temperature of the water, and it can be a characteristic of the global change in the temperature of the ocean. JEPTER7492019991 JEPTER749201