Three-dimensional imaging of waves and floes in the marginal ice zone during a cyclone

Alberello, Alberto ORCID:, Bennetts, Luke G., Onorato, Miguel, Vichi, Marcello, MacHutchon, Keith, Eayrs, Clare, Ntamba, Butteur Ntamba, Benetazzo, Alvise, Bergamasco, Filippo, Nelli, Filippo, Pattani, Rohinee, Clarke, Hans, Tersigni, Ippolita and Toffoli, Alessandro (2022) Three-dimensional imaging of waves and floes in the marginal ice zone during a cyclone. Nature Communications, 13. ISSN 2041-1723

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The marginal ice zone is the dynamic interface between the open ocean and consolidated inner pack ice. Surface gravity waves regulate marginal ice zone extent and properties, and, hence, atmosphere-ocean fluxes and ice advance/retreat. Over the past decade, seminal experimental campaigns have generated much needed measurements of wave evolution in the marginal ice zone, which, notwithstanding the prominent knowledge gaps that remain, are underpinning major advances in understanding the region’s role in the climate system. Here, we report three-dimensional imaging of waves from a moving vessel and simultaneous imaging of floe sizes, with the potential to enhance the marginal ice zone database substantially. The images give the direction–frequency wave spectrum, which we combine with concurrent measurements of wind speeds and reanalysis products to reveal the complex multi-component wind-plus-swell nature of a cyclone-driven wave field, and quantify evolution of large-amplitude waves in sea ice.

Item Type: Article
Additional Information: Acknowledgements: The expedition was funded by the South African National Antarctic Programme through the National Research Foundation. This work was motivated by the Antarctic Circumnavigation Expedition (ACE) and partially funded by the ACE Foundation and Ferring Pharmaceuticals. A.A., L.B. and A.T. were supported by the Australian Antarctic Science Programme (project 4434). A.A. acknowledges support from the Japanese Society for the Promotion of Science (PE19055). L.G.B. is supported by the Australian Research Council (FT190100404). L.G.B. and A.T. are supported by the Australian Research Council (DP200102828). M.O. was supported by the Simons Collaboration on Wave Turbulence, Award No. 617006, and from the “Departments of Excellence 2018-2022” Grant awarded by the Italian Ministry of Education, University and Research (MIUR, L.232/2016). M.O. acknowledges the EU H2020 FET Open BOHEME, Grant No. 863179. M.V. and K.M. were supported by the NRF SANAP contract UID118745. C.E. was supported under NYUAD Center for Global Sea Level Change project G1204. We are indebted to Captain Knowledge Bengu and the crew of the S.A. Agulhas II for their invaluable contribution to data collection. ERA5 reanalysis was obtained using Copernicus Climate Change Service Information. M.O. acknowledges B. GiuliNico for interesting discussions. A.A., A.T. and M.O. thank L. Fascette for technical support during the cruise.
Uncontrolled Keywords: general,physics and astronomy(all),chemistry(all),biochemistry, genetics and molecular biology(all),sdg 13 - climate action ,/dk/atira/pure/subjectarea/asjc/1000
Faculty \ School: Faculty of Science > School of Mathematics
UEA Research Groups: Faculty of Science > Research Groups > Fluid and Solid Mechanics
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Depositing User: LivePure Connector
Date Deposited: 10 Aug 2022 08:38
Last Modified: 22 Oct 2022 07:53
DOI: 10.1038/s41467-022-32036-2


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