E. O. Dubinina, S. A. Kossova, A. A. Osadchiev, Yu. N. Chizhova, A. S. Avdeenko
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引用次数: 0
Abstract
The isotope parameters and sources of freshwater components for the subsurface, intermediate, and deep water of the western Bering Sea were estimated using the isotope (δ18О, δD) data for 177 seawater samples. We show that subsurface, dichothermal and, partially, intermediate water (<1000 m) are freshened by regional precipitation. For these waters, the next equations of relations between delta and salinity values were obtained: δ18О = [0.390 ± 0.018]S – 13.521 ± 0.613 and δD = [3.07 ± 0.08]S – 107 ± 2.74. Deeper (1000–2500 m) water is also freshened by precipitation but from the more southern region (≈40°–45° S). The deepest water (2800–4300 m) retain their isotope signal obtained via freshening by Antarctic glacier ice meltwater. The distribution of isotope parameters with the depth shows that vertical mixing at depths of ≈1000–2500 m takes place. This process should influent the redistribution of nutrients, dissolved oxygen, organic matter, and other components in water of the western Bering Sea. The isotope composition of water passing into the Arctic Ocean halocline (S = 33.1) from the Bering Sea are δ18О = –0.61‰ and δD = –5.4‰.
期刊介绍：
Oceanology, founded in 1961, is the leading journal in all areas of the marine sciences. It publishes original papers in all fields of theoretical and experimental research in physical, chemical, biological, geological, and technical oceanology. The journal also offers reviews and information about conferences, symposia, cruises, and other events of interest to the oceanographic community.
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