Brief communication: Grease Ice in the Antarctic Marginal Ice Zone

Paul, Felix; Mielke, Tommy; Nisters, Carina; Schröder, Jörg; Rampai, Tokoloho; Skatulla, Sebastian; Audh, Riesna R.; Hepworth, Ehlke; Vichi, Marcello

doi:10.5194/tc-2020-362

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…Given the unknowns in wave-ice interaction and the large uncertainties in both observed and forecasted waves within sea ice, the MIZ can be operationally defined through sea ice concentration thresholds, as the transition zone between open water and consolidated pack ice, where the total area of ocean is covered by 15-80% sea ice (e.g. Paul et al 2021;Vichi 2021).…”

Section: Introductionmentioning

confidence: 99%

Copernicus Ocean State Report, issue 6

Brasseur

2022

Journal of Operational Oceanography

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Section: Introductionmentioning

confidence: 99%

Copernicus Ocean State Report, issue 6

Brasseur

2022

Journal of Operational Oceanography

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“…During the pancake ice floe lifting, the 3D printed Niskin bottle was again deployed from the helideck to retrieve water samples from which the ice-ocean boundary layer salinity was determined. In addition, interstitial frazil ice was collected and its viscosity was measured, further details are found in Paul et al (2021).…”

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confidence: 99%

Physical and mechanical properties of winter first-year ice in the Antarctic marginal ice zone along the Good Hope Line

Skatulla

Audh

Cook

et al. 2021

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Abstract. As part of the 2019 Southern oCean seAsonal Experiment (SCALE) Winter Cruise of the South African icebreaker SA Agulhas II first-year ice was sampled at the advancing outer edge of the Antarctic marginal ice zone along a 150 km-Good Hope Line transect. Ice cores were extracted from four solitary pancake ice floes of 1.83–2.95 m diameter and 0.37–0.45 m thickness as well as a 12 × 4 m2 pancake ice floe of 0.31–0.76 m thickness part of a larger consolidated pack ice domain. The ice cores were subsequently analyzed for temperature, salinity, texture, anisotropic elastic properties and compressive strength. All ice cores from both, solitary pancake ice floes and consolidated pack ice, exhibited predominantly granular textures. The vertical distributions of salinity, brine volume and mechanical properties were significantly different for the two ice types. High salinity values of 12.6 ± 4.9 PSU were found at the topmost layer of the solitary pancake ice floes but not for the consolidated pack ice. The uniaxial compressive strength for pancake ice and consolidated pack ice were determined as 2.3 ± 0.5 MPa and 4.1 ± 0.9 MPa, respectively. The Young’s and shear moduli in longitudinal core direction of solitary pancake ice were obtained as 3.7 ± 2.0 GPa and 1.3 ± 0.7 GPa, and for consolidated pack ice as 6.4 ± 1.6 GPa and 2.3 ± 0.6 GPa, respectively. Comparing Young’s and shear moduli measured in longitudinal and transverse core directions, a clear directional dependency was found, in particular for the consolidated pack ice.

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Brief communication: Grease Ice in the Antarctic Marginal Ice Zone

Cited by 2 publications

References 4 publications

Copernicus Ocean State Report, issue 6

Copernicus Ocean State Report, issue 6

Physical and mechanical properties of winter first-year ice in the Antarctic marginal ice zone along the Good Hope Line

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