Winter Ice Dynamics in a Semi-Closed Ice-Covered Sea: Numerical Simulations and Satellite Data

The White Sea is a small shallow sea covered by ice in winter. There are very few numerical models of this sea. For the ice-free sea, much data has been collected, but for winter only a small amount (satellite data only). We use our finite-element numerical model Jasmine and satellite data to trace...

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Bibliographic Details
Published in:Fluids
Main Authors: Ilya Chernov, Alexey Tolstikov, Vyacheslav Baklagin, Nikolay Iakovlev
Format: Article in Journal/Newspaper
Language:English
Published: MDPI AG 2022
Subjects:
White Sea
numerical simulation
sea ice
winter regime
satellite data
currents
Thermodynamics
QC310.15-319
Descriptive and experimental mechanics
QC120-168.85
Sea ice
Online Access:https://doi.org/10.3390/fluids7100324
https://doaj.org/article/5a84d669c7184c1d9dc15e4841fa2af2
Description
Summary:The White Sea is a small shallow sea covered by ice in winter. There are very few numerical models of this sea. For the ice-free sea, much data has been collected, but for winter only a small amount (satellite data only). We use our finite-element numerical model Jasmine and satellite data to trace the ice advection and exchange between parts of the White Sea. The aim of the investigation is to adjust the model to adequately reproduce the White Sea ice dynamics. By comparing satellite data on sea-ice concentration with the model prediction, we show that the model describes sea-ice dynamics well, and use it to estimate ice flow from bays to the middle part of the sea and ice exchange through the narrow strait. Ice exchange between neighbouring parts of the sea is shown to be intensive, with large dispersion compared to the time-mean, and bays are shown to be ice producers, while the Gorlo straight is shown to accept ice. We demonstrate that the model is a tool that can be used to better understand the winter regime of the sea.

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