Affiliation:
1. Institute of Water and Ecology Problems of Far East Branch of Russian Academy of Science
2. Tongji University
Abstract
It is shown that cryoprocesses play an important role in the pollution of watercourses during ice formation. The content of heavy metals was determined layer by layer in ice cores. The growth rate of ice crystals, determined by the temperature regime, has been established. The mechanisms of concentration of chemical compounds in supercooled water at the contact with the lower surface of the ice mass and their crystallization are considered. It is revealed that the phase transition of water from a liquid to a solid state and the growth of ice crystals contribute to the supersaturation of water with chemical compounds between ice crystals. The conditions under which the concentrations of crystallizing chemical compounds exceed their average content in under-ice water and play an important role in channel pollution during floods are described.
Subject
Management, Monitoring, Policy and Law,Pollution,Ecology
Reference15 articles.
1. Novorotskii P.V. Klimaticheskie izmeneniya v basseine Amura za poslednie 115 let. Meteorologiya i gidrologiya. 2007. № 2. S. 43—53.
2. Makhinov A.N., Kim V.I., Matveenko D.V. Stroenie i mnogoletnyaya dinamika ledyanogo pokrova v nizhnem techenii reki Amur. Led i sneg. 2018. №58(1). S. 117—126.
3. Zobrist B., Marcolli C., Peter T., Koop T. Heterogeneous ice nucleation in aqueous solutions: the role of water activity. J. Phys. Chem. 2008. № 112. P. 3965—3975.
4. Kim V.I., Makhinov A.N. Ice erosion of the Amur river banks. 21-st IAHR International Symposium on Ice. Dalian, China, June 11 to 15, 2012. Dalian, University of Technology Press, 2012. P. 150—159.
5. Ershov E.D. Obshchaya geokriologiya. M., Izdatel'stvo MGU, 2002. 438 s.