Model predictions of wave overwash extent into the marginal ice zone

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dc.contributor.authorPitt, J.P.A.
dc.contributor.authorBennetts, L.G.
dc.contributor.authorMeylan, M.H.
dc.contributor.authorMassom, R.A.
dc.contributor.authorToffoli, A.
dc.date.issued2022
dc.description.abstractIn the marginal ice zone (MIZ), where ocean waves and sea ice interact, waves can produce flows of water across ice floe surfaces in a process known as wave overwash. Overwash potentially influences wave propagation characteristics, floe thermodynamics, and floe surface biological and chemical processes. However, the extent of the MIZ affected by overwash and its dependence on prevailing wave and ice conditions is unknown. In this paper, we propose a model of overwash extent caused by irregular incoming waves into a MIZ consisting of a random floe field. We validate the overwash extent model against laboratory experiments. We use the model to study mild to extreme incoming waves to floe field characteristics of the spring–summer ice retreat and autumn–winter ice advance and with compact ice edges. Overwash is typically predicted to extend a few kilometers and is generally greater for the autumn–winter advance than the spring–summer retreat. The model predictions provide a basis for improved understanding of the impacts of ocean waves on the ice cover. We also apply the model to incoming waves and a floe field with a diffuse ice edge representative of conditions during a field experiment, predicting overwash extents up to 16 km. During the field experiment, the wave and ice floe properties were intermittently monitored by a camera system, demonstrating how the sparse field data available on overwash can be advanced.
dc.description.statementofresponsibilityJordan P. A. Pitt, Luke G. Bennetts, Michael H. Meylan, Robert A. Massom, Alessandro Toffoli
dc.identifier.citationJournal of Geophysical Research: Oceans, 2022; 127(10):1-22
dc.identifier.doi10.1029/2022jc018707
dc.identifier.issn2169-9275
dc.identifier.issn2169-9291
dc.identifier.orcidPitt, J.P.A. [0000-0001-6160-0139]
dc.identifier.orcidBennetts, L.G. [0000-0001-9386-7882]
dc.identifier.urihttps://hdl.handle.net/2440/136704
dc.language.isoen
dc.publisherAmerican Geophysical Union (AGU)
dc.relation.granthttp://purl.org/au-research/grants/arc/DP200102828
dc.relation.granthttp://purl.org/au-research/grants/arc/FT190100404
dc.rights© 2022. The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
dc.source.urihttps://doi.org/10.1029/2022jc018707
dc.subjectoverwash; waves; sea ice; marginal ice zone
dc.titleModel predictions of wave overwash extent into the marginal ice zone
dc.typeJournal article
pubs.publication-statusPublished

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