Change of structure and some physical properties of level fast ice during the spring and summer period of 2014 in the vicinity the research station “Ice base Cape Baranov”

• Published in: Arctic and Antarctic Research
• Main Authors: V. A. Borodkin, S. M. Kovalev, A. I. Shushlebin, В. А. Бородкин, C. М. Ковалев, А. И. Шушлебин
• Other Authors: The authors express their gratitude to employees of the research station “Ice base “Cape of Baranov”, who assisted in obtaining the experimental data. The study is performed in the framework of project 1.5.4.5 of the Roshydromet Targeted Scientific and Techical Program (TSTP)., Авторы выражают благодарность сотрудникам научно-исследовательского стационара «Ледовая база Мыс Баранова», оказавшим помощь в получении экспериментальных данных. Работа выполнена в рамках плановой научной тематики ААНИИ 1.5.4.5 по проекту ЦНТП Росгидромета.
• Format: Article in Journal/Newspaper
• Language: Russian
• Published: Государственный научный центр Российской Федерации Арктический и антарктический научно-исследовательский институт 2019
• Subjects: термометаморфизм; salinity; temperature; thermal metamorphism; texture; соленость; текстура; температура; Arctic; Cape Baranov; ice core
• Online Access: https://www.aaresearch.science/jour/article/view/134; https://doi.org/10.30758/0555-2648-2019-65-1-63-76

The determination of the main physical properties of the fast ice around the research station “Ice base Cape of Baranov” was carried out from May 23 to August 7, 2014. At the beginning of the observations the ice was a system of three main layers reflecting the conditions of fast ice formation. The top 70 cm of the ice was formed under the conditions of dynamic variability. The ice formation to the level of 110 cm was more stable, and the lowerst layer below 110 cm grew without hummocking and thawing. In the second decade of June the ice accretion began on top due to recrystallization on snow and ice boundary. In the third decade of June the accretion process at the ice-snow interface was replaced by surface melting and destruction layer development. These changes are assumed to begin as maximum air temperatures keep above zero. By the second decade of July all the ice core had undergone serious internal changes. In the third decade of July the process of inter-crystalline-binding degradation affected the whole ice core.From the end of the third decade of June the formation of plate-like crystals was registered at the lower ice border, as well as the accretion of new ice in the form of layesr of various thickness and density. The process had reached the maximum by mid July when new ice up to 30 cm thick was formed. In the third decade of July this ice begun to melt. New ice accretion is primarily due to the presence of a layer of desalinated water under the ice. C 23 мая по 7 августа 2014 г. проводилось определение основных физических свойств припайного льда в районе научно-исследовательского стационара «Ледовая база Мыс Баранова». В начале наблюдений лед представлял собой систему, состоящую из трех основных слоев, отражающих условия формирования припайного льда. Во второй декаде июня началось нарастание льда сверху за счет процессов перекристаллизации на границе льда и снега. В третьей декаде июня оно сменилось поверхностным таянием и развитием слоя деструкции. Процессы разрушения межкристаллических связей ...