Abstract
It is believed that the waters of rivers flowing into the Kara Sea (predominantly discharge of the Yenisei and Ob rivers) can propagate to the east, penetrating the Laptev Sea with the current along the coast. This can occur with the so-called eastern transfer of continental runoff. During a cruise of the R/V Akademik Mstislav Keldysh in 2018, traces of riverine waters were discovered in the Vilkitsky Strait. Hydrochemical data suggest with great confidence that these waters were transported from the Ob–Yenisei estuary region. This is because in 2018, pronounced eastern transfer of water from the Kara to the Laptev Sea was observed. A year earlier, continental runoff was not observed in the strait. The fact that transformed riverine waters were transported into the strait from the Kara Sea is also corroborated by the results of surface water sampling along the route of the vessel.
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