статья в журнале

Ru

Sovremennye Problemy Distantsionnogo Zondirovaniya Zemli iz Kosmosa

ISSN:2070-7401
eSSN:2411-0280

2020

Artamonova, A.V.¹

Zimin, A.V.¹

10.21046/2070-7401-2020-17-1-203-210

In this work we present the results of ocean eddies observations in the Chukchi and Beaufort Sea based on identification of eddy signatures in spaceborne synthetic aperture radar (SAR) images acquired in summer-autumn period of 2007 and 2011. Locations of eddy centers, their diameters, vorticity signs, manifestation types and water depths corresponding to eddy centers were determined. The results were obtained separately for eddies observed over ice-free regions and in the marginal ice zone (MIZ). In total, 2724 eddy signatures were identified in satellite SAR images with 52 % of those found in the ice-free regions and 48 % in the MIZ. It is shown that about 64 % of all eddies are cyclonic, which is true both for the open water and MIZ eddies. Eddies range in diameter from 1 to 50 km, while 80 % of them have diameter less than 10 km. Since the values of the Rossby radius range within 1-15 km over the study site in summer, most of the observed eddies can be classified as submesoscale. © 2020 Space Research Institute of the Russian Academy of Sciences.

ARCTIC OCEAN, BEAUFORT GYRE, BEAUFORT SEA, CHUKCHI SEA, OCEAN EDDIES, SATELLITE RADAR IMAGES, SUBMESOSCALE EDDIES, SYNOPTIC EDDIES

2020-08-05 11:02:50