Relationship between structure and chemical composition of fast sea and lake ice in the Cape Marre-Sale area, Western Yamal

• Main Authors: V. Butakov I., Ya. Tikhonravova V., E. Slagoda A., В. Бутаков И., Я. Тихонравова В., Е. Слагода А.
• Other Authors: The authors would like to thank the staff of the Laboratory of Hydrochemistry and Atmospheric Chemistry of the Limnological Institute of the Siberian Branch of the Russian Academy of Sciences I V Tomberg and N A Zhuchenko for analytical research., Авторы выражают признательность сотрудникам Лаборатории гидрохимии и химии атмосферы Лимнологического института СО РАН И В Томберг и Н А Жученко за аналитические исследования.
• Format: Article in Journal/Newspaper
• Language: Russian
• Published: IGRAS 2022
• Subjects: fast sea ice;lake ice;ionic composition of ice;trace elements of ice;texture and microstructure of ice;hydrosphere clarke;europium and cerium anomalies; прибрежно-морской лёд;озёрный лёд;ионный состав льда;микроэлементный состав льда;текстура и структура льда;кларк гидросферы;европиевая и цериевая аномалии; Arctic; Permafrost and Periglacial Processes; Sea ice; Морской лёд; Ямал; Siberia
• Online Access: https://ice-snow.igras.ru/jour/article/view/985; https://doi.org/10.31857/S2076673422020131

The texture, structure, ionic and trace element composition of samples of fast (coastal-sea) and lake ice collected in 2014 in the area of Cape Marre-Sale (the North-Western Siberia) were analyzed. The following main types of the ice structure were identified in ice sections: firn ice with randomly oriented small crystals; lake large- and small-crystalline bubble ice; layered fast sea ice with small isometric and vertically elongated crystals. The upper part of the lake ice is formed by recrystallized snow containing marine aerosols and lake water. The coefficient of involvement of the main ions from the solution during the ice formation varies for lake ice from 0.02 to 1.51, for sea ice – from 0.10 to 0.23, and for coastal-marine - from 0.03 to 0.04. The difference in the degree of ion involvement into the lake ice is related to the sources of components entering the process of formation of firn and large ice crystals from lake water. Coastal sea ice has high concentrations of trace elements relative to the clarks of sea waters. The income of trace elements into the coastal sea ice is probably determined by continental runoff. It is established that the mineralization of seasonal ice increases with a decrease in the size of crystals. The dependence of the values of the Europium anomaly on the rate of ice formation was revealed. The Europium anomaly in coastal sea ice is inherited from seawater, and the upper part of lake ice is inherited from precipitation. Проанализированы текстура, структура, ионный и микроэлементный состав озёрного и прибрежно-морского льда, отобранного в районе мыса Марре-Сале (Западный Ямал) в 2014 г. Верхняя часть озёрного льда представляет собой фирнизированный снег, имеющий в химическом составе признаки влияния морского аэрозоля. Прибрежно-морской лёд характеризуется слоистой структурой и высокими содержаниями микроэлементов относительно кларков морских вод, источником которых служит континентальный сток. Установлено, что минерализация сезонных льдов увеличивается с уменьшением ...