Structure and variability of the Pechora plume in the southeastern part of the Barents Sea

The Pechora River forms the large Pechora River plume in the southeastern part of the Barents Sea (also called the Pechora Sea). Many previous works addressed water masses in the Barents Sea, however, the Pechora plume received relatively little attention, therefore, many basic aspects of its struct...

Full description

Bibliographic Details
Published in:Frontiers in Marine Science
Main Authors: Rogozhin, Vladimir, Osadchiev, Alexander, Konovalova, Olga
Other Authors: Russian Science Foundation, Ministry of Science and Higher Education of the Russian Federation
Format: Article in Journal/Newspaper
Language:unknown
Published: Frontiers Media SA 2023
Subjects:
Ocean Engineering
Water Science and Technology
Aquatic Science
Global and Planetary Change
Oceanography
Barents Sea
Kara Sea
Pechora
Pechora Sea
Online Access:http://dx.doi.org/10.3389/fmars.2023.1052044
https://www.frontiersin.org/articles/10.3389/fmars.2023.1052044/full
Description
Summary:The Pechora River forms the large Pechora River plume in the southeastern part of the Barents Sea (also called the Pechora Sea). Many previous works addressed water masses in the Barents Sea, however, the Pechora plume received relatively little attention, therefore, many basic aspects of its structure and variability remain unknown. In this study, we focus on spreading of the Pechora plume in the Pechora Sea during ice-free periods. Based on the extensive in situ measurements and satellite observations, we describe the dependence of area and spatial characteristics of the Pechora plume on wind forcing, river discharge rate, and spring ice conditions. We reveal three general types of Pechora plume spreading, which are determined by the external forcing conditions. Joint analysis of a large set of in situ and satellite data provided opportunity to study the variability of the Pechora plume on the synoptic, seasonal, and interannual time scales. We reveal regular advection of the Pechora plume through the Kara Strait into the Kara Sea. In addition, we describe formation of a significant area of increased salinity within the Pechora plume formed during wind-induced coastal upwelling events. The results of this research are of key importance for understanding the physical, biological, and geochemical processes in the Pechora Sea and the adjacent areas of the Barents and Kara seas.

Similar Items