Oxygen Isotope Composition of Water and Snow-Ice Cover of Isolated Lakes at Various Stages of Separation from the White Sea

Lisitzin, A.P.; Vasil’chuk, Y.K.; Shevchenko, V.P.; Budantseva, N.A.; Krasnova, E.D.; Pantyulin, A.N.; Filippov, A.S.; Chizhova, J.N.

Авторы: Lisitzin A.P., Vasil’chuk Yu K., Shevchenko V.P., Budantseva N.A., Krasnova E.D., Pantyulin A.N., Filippov A.S., Chizhova Ju N.
Журнал: Doklady Earth Sciences
Том: 449
Номер: 2
Год издания: 2013
Издательство: Maik Nauka/Interperiodica Publishing
Местоположение издательства: Russian Federation
Первая страница: 406
Последняя страница: 412
DOI: 10.1134/S1028334X1304003X
Аннотация: This study aimed to analyze the oxygen isotope composition of water, ice, and snow in water bod ies isolated from the White Sea and to identify the structural peculiarities of these pools during the winter period. The studies were performed during early spring in Kandalaksha Bay of the White Sea, in Velikaya Salma Strait and in Rugoserskaya Inlet. The studied water bodies differ in their degree of isolation from the sea. In particular, Ermolinskaya Gulf has normal water exchange with the sea; the Lake on Zelenyi Cape represents the first stage of isolation; i. e., it has permanent water exchange with the sea by the tide. Kislo-Sladkoe Lake receives sea water from time to time. Trekhtsvetnoe Lake is totally isolated from the sea and is a typical meromictic lake. Finally, Nizhnee Ershovskoe Lake exhibits some features of a saline water body. The oxygen isotope profile of the water column in Trekhtsvetnoe Lake allows defining three layers; this lake may be called typically meromictic. The oxygen isotope profile of the water column in Kislo-Sladkoe Lake is even from the surface to the bottom. The variability of delta18O is minor in Lake on Zelenyi Cape. A surface layer (0–1 m) exists in Nizhne-Ershovskoe Lake, and the oxygen isotope variability is well pronounced. Deeper, where the freshwater dominates, the values of delta18O vary insignificantly disregarding the water depth and temperature. This fresh water lake is not affected by the seawater and is not stratified according to the isotope profile. It is found that applying the values of delta18O and profiles of temperature and salinity may appear as an effective method in defining the water sources feeding the water bodies isolated from the sea environment.
Добавил в систему: Васильчук Юрий Кириллович

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Oxygen Isotope Composition of Water and Snow-Ice Cover of Isolated Lakes at Various Stages of Separation from the White Seaстатья

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