Open AccessMonitoring of the physical and mechanical state of sea ice and short-term prediction of extreme ice phenomena
Author(s) -
В. Ф. Смирнов,
Sergey M. Kovalev,
А. И. Шушлебин,
Nikolai Kolabutin,
М. С. Знаменский
Publication year - 2020
Publication title -
problemy arktiki i antarktiki
Language(s) - English
Resource type - Journals
eISSN - 2618-6713
pISSN - 0555-2648
DOI - 10.30758/0555-2648-2020-66-2-162-179
Subject(s) - sea ice , ice wedge , geology , climatology , oceanography , permafrost
The article presents the results of studies that complement each other. New methods of instrumental studies of the physical and mechanical characteristics of ice and ice cover are considered. There is briefly described the complex system to developed in the AARI (Arctic and Antarctic research Institute) to determine the strength characteristics of ice formations in natural conditions. The results of determining the ice strength in wells (local strength) at the research station of AARI “Ice Base Cape of Baranov” are presented. The coefficient of comparison of local strength and strength of samples under uniaxial compression is obtained. This allows to determine the ice strength without sampling and testing of samples. On a large experimental material, linear and quadratic approximations for local ice strength were obtained. The influence of the indenter penetration rate on the local ice strength is studied. There is considered the application of the contact remote method for monitoring the dynamic state of the ice cover in order to obtain new data for creating a method of predicting the phenomena of compression and destruction of sea ice in real time. To study the large-scale mechanics of ice during dynamic processes in the air — ice — water system, a modular-block system for ice cover monitoring was developed. The layout of the system was tested in Arctic expeditions. The developed complex system for determining the strength characteristics of ice formations in natural conditions and the modular-block system for monitoring the state of the ice cover complement each other, suggest their further development and improvement, provide wide opportunities for ice research.