@article{fdi:010088074,
  title = {{S}outhern {O}cean ice-covered eddy properties from satellite altimetry},
  author = {{A}uger, {M}. and {S}allee, {J}. {B}. and {T}hompson, {A}. {F}. and {P}authenet, {E}tienne and {P}randi, {P}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e investigate statistical properties of surface currents as well as coherent mesoscale eddies in the seasonally ice-covered {S}outhern {O}cean. {B}ased on a recent regional {S}ea {L}evel {A}nomaly satellite altimetry data set, we compute {E}ddy {K}inetic {E}nergy ({EKE}) and detect mesoscale eddies. {EKE} is about one order of magnitude higher in the northern sector of the subpolar basin and over the continental slope, as compared to the middle of the subpolar gyres. {A}n eddy detection methodology reveals that eddies are distributed evenly in the subpolar {S}outhern {O}cean, and their amplitude follows the spatial pattern of {EKE}. {I}n addition to regional circulation variations, sea ice concentration arises as an important driver of eddy properties. {E}ddies have low amplitude and density in the pack ice, in particular in the middle of the gyres where the background circulation is unfavorable for instabilities. {I}n contrast, the northern part of the {M}arginal {I}ce {Z}one is favorable for mesoscale eddies, especially cyclonic. {T}here, eddies are stronger and their density is higher than in any other region of the ice-covered or ice-free subpolar {S}outhern {O}cean. {T}his region is expected to be a site of frontogenesis due to sea ice melt and upwelling generated from interactions between the wind and the sea ice. {W}hile many mesoscale eddies will fall below detection level due to the small {R}ossby radius at high latitudes, these results contribute to understanding the interactions between mesoscale eddies, sea ice, and the background circulation in the subpolar region.},
  keywords = {{OCEAN} {AUSTRAL}},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch : {O}ceans},
  volume = {128},
  numero = {4},
  pages = {e2022{JC}019363 [15 p.]},
  ISSN = {2169-9275},
  year = {2023},
  DOI = {10.1029/2022jc019363},
  URL = {https://www.documentation.ird.fr/hor/fdi:010088074},
}