статья в журнале

En

Oceanology

ISSN:00014370

2023

Mukhametianov, R.Z.²

Seliverstova, A.M.¹

Krechik, V.A.²

Zuev, O.A.¹

10.1134/S0001437023040136

Abstract—In January–February 2022, a CTD/LADCP section with hydrochemical observations was made across the Powell Basin in the Weddell Sea on an Antarctic expedition of the R/V Akademik Mstislav Keldysh. The section extended from the Antarctic Peninsula to the South Orkney Islands; thus, it crossed the Weddell Gyre in its northwestern part. As a result, new data were acquired on the hydrological and hydrochemical structures and water dynamics in this region. This study presents new results on analysis of data related to the structure of the Weddell Gyre, formation of Antarctic Bottom Water, and variability of hydrophysical and hydrochemical characteristics of water in the Powell Basin. Only two of the three currents were identified in the structure of the Weddell Gyre: the Antarctic Coastal Current and Antarctic Slope Front,. The velocities of these currents were about 10–15 cm/s. The structure of waters was typical of the Weddell Sea, but a change in the temperature maximum was recorded in the Warm Deep Water layer.

CTD/LADCP section, oxygen, Powell Basin, silicates, water masses

2023-10-17 12:30:34