Variations of δ18O in Rivers of Crimea in Winter
| Autor: | A. N. Tkachenko, Ju. N. Chizhova, J. Yu. Vasil’chuk, D. L. Golovanov, Yu. K. Vasil’chuk, Nadine A Budantseva |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Hydrology
geography geography.geographical_feature_category Range (biology) δ18O 0208 environmental biotechnology 02 engineering and technology Groundwater recharge Isotopes of oxygen 020801 environmental engineering Peninsula Environmental science Precipitation Rain and snow mixed Groundwater Water Science and Technology |
| Zdroj: | Water Resources. 45:776-784 |
| ISSN: | 1608-344X 0097-8078 |
| DOI: | 10.1134/s0097807818050238 |
| Popis: | The results of studies of variations of δ18O values in river water in Crimea Peninsula in January–February 2015–2017 are given. The variation range of δ18О in river water over the three years of studies never exceeded 3‰. A tendency toward an increase in δ18О in the water of the Salgir, Kacha, Al’ma, Bel’bek, Biyuk-Karasu from their sources to mouths was identified and explained by a decrease in evaporation in the mouth areas of the rivers relative to their sources and upper reaches, and the inflow of isotopically light precipitation (rain and snow) into the rivers in their upper reaches. The values of δ18О in waters of the rivers with regulated stream were found to increase under the effect of the Simferopol Reservoir on the Salgir River and the Izobil’nenskoe Reservoir on the Ulu-Zen’ River. The values of δ18О in the upper reaches of the large rivers of Kacha and Bel’bek (the northwestern slope of the Crimean Mountains) vary from −8.7 to −9.7‰, except for the rivers of Al’ma (−7.7‰) and Kokozka (−10.2‰) because of the different shares of groundwater in the recharge of these rivers. |
| Databáze: | OpenAIRE |
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