Geochemical aspects of spring destruction of snow cover at Central Yakutia complex geocryological station «Tuymaada»
https://doi.org/10.31242/2618-9712-2018-26-4-64-71
Abstract
The article analyzes results of geochemical monitoring of snow cover at the geocryological station «Tuymaada». Transformation parameters of snow (temperature, height, density, moisture reserve) and peculiarities of migration of moisture and matter during destruction of the snow cover in a spring period are studied. A volume of accumulation of chemical components in the snow cover is calculated. A nature of a change in the density of the salt composition of the snow cover makes it possible to distinguish three phases of a process of washing out the chemical components. It was found that in the spring period the maximum loss of soluble components by the snow cover is observed for Clions and nitrogen compounds, with which the last portions of melt water are enriched. A ratio of a lost stock of chemical elements has the form: Cl > N
> S > Ca > C. By the end of April, immediately to melting of the snow cover, 30–70 % of the ions were washed from the snow. At the same time, the water equivalent in snow decreased only by 30 %. In the period of the destruction and melting of the snow cover in early May, the soil cover remains frozen and the bulk of snow moisture is transferred to the final drainage basins: city lakes and the Lena River, contributing to desalination of water bodies and streams.
About the Authors
Vladimir Nikolaevich Makarov
P.I. Melnikov Permafrost Institute SB RAS
Russian Federation
Russian Federation
MAKAROV Vladimir Nikolaevich, Doctor of Geological and Mineralogical Sciences, Professor, Principal Researcher, P.I. Melnikov Permafrost Institute SB RAS, 36 Merzlotnaya St., Yakutsk, 677010, Russia,
http://orcid.org/0000-0002-6086-886X, Makarov@mpi.ysn.ru;
Stella Afanas’evna Markova
P.I. Melnikov Permafrost Institute SB RAS
Russian Federation
Russian Federation
MARKOVA Stella Afanas’evna, Postgraduate Student, P.I. Melnikov Permafrost Institute SB RAS, 36 Merzlotnaya St., Yakutsk, 677010, Russia,
stellapotapova93@mail.ru.
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For citations:
Makarov V.N., Markova S.A. Geochemical aspects of spring destruction of snow cover at Central Yakutia complex geocryological station «Tuymaada». Arctic and Subarctic Natural Resources. 2018;23(4):64-71. (In Russ.) https://doi.org/10.31242/2618-9712-2018-26-4-64-71
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