METHOD OF DETERMINING STRUCTURE OF ICE HUMMOCKS AND GROUNDED ICE HUMMOCKS, PROPERTIES OF ICE AND BOUNDARIES OF ICE AND GROUND Russian patent published in 2000 - IPC

FIELD: ice science and technology. SUBSTANCE: method is used in investigation of ice hummocks and grounded ice hummocks on shelves of freezing seas. Method provides for collection of objective data for determination of ice properties, boundaries of consolidated ice and boundaries of ice and ground with help of hole thermal drilling by electric power or hot water. For this purpose, in the course of drilling, the following drilling parameters are recorded by computer: heat output to thermodrill, water temperature and pressure in hole, hole depth and duration of drilling. In electric drilling, measured and additionally recorded is salinity of thawed water pumped from hole. These parameters are used for determination of ice hummock thickness, sizes and location of cavities, boundaries of consolidated ice, ice properties (density, salinity, porosity) and presence of impurities. In drilling of grounded ice hummocks, subject to measurement is boundary of ice and ground relative to water level filling the hole and surface of grounded ice hummocks. EFFECT: higher efficiency. 2 cl, 3 dwg