статья в журнале

En

Oceanology

ISSN:00014370

2021

10.1134/S0001437021060175

The seasonal and interannual variability of water exchange in the Bering Strait and its relationship with Arctic circulation is investigated on the basis of satellite-altimetry measurements between 1993 and 2016. The intensification of northern currents in the strait is observed from April to August, when their mean speed is approximately 25 cm/s. During September–November, a sharp weakening of the speed is observed, and in some years, there is even a change in the current direction to the south with monthly average speeds of up to 10 cm/s. Two pronounced minima have been recorded on the interannual scale in the intensity of northern currents in 2002–2003 and 2012–2013. These minima are associated with strengthening of the East Siberian Current (also known as the Siberian Coastal Current), which in some years extends far to the east and flows into the Bering Strait. As a result, a southern current appears in the western part of the strait, which partially blocks the flow of Pacific waters into the Arctic. The bi-directional structure of currents is observed from satellite temperature measurements, which record the flow of cold Arctic waters into the strait in autumn. Studies of the relationship between water exchange and the wind field show that intensification of the northwestern winds, north of the New Siberian Islands, causes intensification of the East Siberian Current, which apparently leads to an increase in the eastern transport of waters from the Laptev Sea. © 2021, Pleiades Publishing, Inc

Bering Strait, Chukchi Sea, East Siberian Current, Pacific waters, satellite altimetry, seasonal and interannual variability, water exchange

2022-02-22 12:15:52