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The Cryosphere An interactive open-access journal of the European Geosciences Union
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Frazil ice, consisting of loose disc-shaped ice crystals, is the very first sea ice that forms in the annual cycle in the marginal ice zone (MIZ) of the Antarctic. A sufficient number of frazil ice crystals forms the surface grease ice layer taking a fundamental role in the freezing processes in the MIZ. As soon as the ocean waves are damped, a closed ice cover can form. The viscous properties of frazil ice, which have a crucial influence on the growth of sea ice in the MIZ are investigated.
Preprints
https://doi.org/10.5194/tc-2020-362
https://doi.org/10.5194/tc-2020-362

  06 Jan 2021

06 Jan 2021

Review status: this preprint is currently under review for the journal TC.

Brief communication: Grease Ice in the Antarctic Marginal Ice Zone

Felix Paul1, Tommy Mielke1, Carina Nisters2, Jörg Schröder2, Tokoloho Rampai3, Sebastian Skatulla4, Riesna Audh5, Ehlke Hepworth5, Marcello Vichi5, and Doru C. Lupascu1 Felix Paul et al.
  • 1Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Germany
  • 2Institute of Mechanics, University of Duisburg-Essen, Germany
  • 3Department of Chemical Engineering, University of Cape Town, South Africa
  • 4Department of Civil Engineering, University of Cape Town, South Africa
  • 5Marine Research Institute, University of Cape Town, South Africa

Abstract. Frazil ice, consisting of loose disc-shaped ice crystals, is the very first ice that forms in the annual cycle in the marginal ice zone (MIZ) of the Antarctic. A sufficient number of frazil ice crystals forms the surface grease ice layer taking a fundamental role in the freezing processes in the MIZ. As soon as the ocean waves are sufficiently damped, a closed ice cover can form. In this brief communication we investigate the rheological properties of frazil ice, which has a crucial influence on the growth of sea ice in the MIZ. Grease ice shows shear thinning flow behavior.

Felix Paul et al.

Status: open (until 03 Mar 2021)

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  • RC1: 'Comment on tc-2020-362', Anonymous Referee #1, 11 Jan 2021 reply

Felix Paul et al.

Felix Paul et al.

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Short summary
Frazil ice, consisting of loose disc-shaped ice crystals, is the very first sea ice that forms in the annual cycle in the marginal ice zone (MIZ) of the Antarctic. A sufficient number of frazil ice crystals forms the surface grease ice layer taking a fundamental role in the freezing processes in the MIZ. As soon as the ocean waves are damped, a closed ice cover can form. The viscous properties of frazil ice, which have a crucial influence on the growth of sea ice in the MIZ are investigated.
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