Application of Deuterium Excess for Identification of Freshwater Sources in the Bays of Novaya Zemlya Archipelago

An isotopic-geochemical study was carried out for the waters of Tsivolki and Sedov bays (southeastern coast of the Novaya Zemlya archipelago). Waters of these bays can be freshened by several potential sources, which are river runoff from the continent, atmospheric precipitation of the region, waters coming from the archipelago. The possibility to use deuterium excess for identification of freshwater components in the waters, which enter the studied bays, is shown. Calculations made on the material sampled in 2015 showed the presence of the Ob River estuary waters in the surface waters of the Sedov Bay. At the same period, the waters of the halocline of Tsivolki Bay show freshening by local sources - runoff from the Novaya Zemlya archipelago.