Katlein, C;
Mohrholz, V;
Sheikin, I;
Itkin, P;
Divine, DV;
Stroeve, J;
Jutila, A;
... Haas, C; + view all
(2020)
Platelet Ice Under Arctic Pack Ice in Winter.
Geophysical Research Letters
, 47
(16)
, Article e2020GL088898. 10.1029/2020gl088898.
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Abstract
The formation of platelet ice is well known to occur under Antarctic sea ice, where subice platelet layers form from supercooled ice shelf water. In the Arctic, however, platelet ice formation has not been extensively observed, and its formation and morphology currently remain enigmatic. Here, we present the first comprehensive, long‐term in situ observations of a decimeter thick subice platelet layer under free‐drifting pack ice of the Central Arctic in winter. Observations carried out with a remotely operated underwater vehicle (ROV) during the midwinter leg of the MOSAiC drift expedition provide clear evidence of the growth of platelet ice layers from supercooled water present in the ocean mixed layer. This platelet formation takes place under all ice types present during the surveys. Oceanographic data from autonomous observing platforms lead us to the conclusion that platelet ice formation is a widespread but yet overlooked feature of Arctic winter sea ice growth.
| Type: | Article |
|---|---|
| Title: | Platelet Ice Under Arctic Pack Ice in Winter |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1029/2020gl088898 |
| Publisher version: | https://doi.org/10.1029/2020GL088898 |
| Language: | English |
| Additional information: | © 2020 The Authors. This is an open access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/). |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10108542 |
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