Wave‐Driven Flow Along a Compact Marginal Ice Zone
Observations of surface waves and ice drift along a compact sea ice edge demonstrate the importance of waves in a marginal ice zone. An analytic model is presented for the along‐ice drift forced by the radiation stress gradient of oblique waves. A momentum balance using quadratic drag to oppose the...
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fthzgzmk:oai:publications.hereon.de:39701 2023-06-11T04:16:34+02:00 Wave‐Driven Flow Along a Compact Marginal Ice Zone Thomson, J. Lund, B. Hargrove, J. Smith, M. Horstmann, J. MacKinnon, J. 2021 https://publications.hereon.de/id/39701 https://publications.hzg.de/id/39701 https://doi.org/10.1029/2020GL090735 en eng AGU https://dx.doi.org/10.1029/2020GL090735 urn:issn:0094-8276 https://publications.hereon.de/id/39701 https://publications.hzg.de/id/39701 info:eu-repo/semantics/openAccess open_access oa_allgemein_hybrid issn:0094-8276 Thomson, J.; Lund, B.; Hargrove, J.; Smith, M.; Horstmann, J.; MacKinnon, J.: Wave‐Driven Flow Along a Compact Marginal Ice Zone. In: Geophysical Research Letters. Vol. 48 (2021) 3, e2020GL090735. (DOI: /10.1029/2020GL090735) info:eu-repo/semantics/article Zeitschrift Artikel 2021 fthzgzmk https://doi.org/10.1029/2020GL090735 2023-05-28T23:25:12Z Observations of surface waves and ice drift along a compact sea ice edge demonstrate the importance of waves in a marginal ice zone. An analytic model is presented for the along‐ice drift forced by the radiation stress gradient of oblique waves. A momentum balance using quadratic drag to oppose the wave forcing is sufficient to explain the observations. Lateral shear stresses in the ice are also evaluated, though this balance does not match the observations as well. Additional forcing by local winds is included and is small relative to the wave forcing. However, the wave forcing is isolated to a narrow region around 500‐m wide, whereas the wind forcing has effects on larger scales. The simplistic drag is assessed using observations of shear and turbulent dissipation rates. The results have implications for the shape and evolution of the ice edge, because the lateral shear may be a source of instabilities. Article in Journal/Newspaper Sea ice Hereon Publications (Helmholtz-Zentrum) Geophysical Research Letters 48 3 |
institution |
Open Polar |
collection |
Hereon Publications (Helmholtz-Zentrum) |
op_collection_id |
fthzgzmk |
language |
English |
description |
Observations of surface waves and ice drift along a compact sea ice edge demonstrate the importance of waves in a marginal ice zone. An analytic model is presented for the along‐ice drift forced by the radiation stress gradient of oblique waves. A momentum balance using quadratic drag to oppose the wave forcing is sufficient to explain the observations. Lateral shear stresses in the ice are also evaluated, though this balance does not match the observations as well. Additional forcing by local winds is included and is small relative to the wave forcing. However, the wave forcing is isolated to a narrow region around 500‐m wide, whereas the wind forcing has effects on larger scales. The simplistic drag is assessed using observations of shear and turbulent dissipation rates. The results have implications for the shape and evolution of the ice edge, because the lateral shear may be a source of instabilities. |
format |
Article in Journal/Newspaper |
author |
Thomson, J. Lund, B. Hargrove, J. Smith, M. Horstmann, J. MacKinnon, J. |
spellingShingle |
Thomson, J. Lund, B. Hargrove, J. Smith, M. Horstmann, J. MacKinnon, J. Wave‐Driven Flow Along a Compact Marginal Ice Zone |
author_facet |
Thomson, J. Lund, B. Hargrove, J. Smith, M. Horstmann, J. MacKinnon, J. |
author_sort |
Thomson, J. |
title |
Wave‐Driven Flow Along a Compact Marginal Ice Zone |
title_short |
Wave‐Driven Flow Along a Compact Marginal Ice Zone |
title_full |
Wave‐Driven Flow Along a Compact Marginal Ice Zone |
title_fullStr |
Wave‐Driven Flow Along a Compact Marginal Ice Zone |
title_full_unstemmed |
Wave‐Driven Flow Along a Compact Marginal Ice Zone |
title_sort |
wave‐driven flow along a compact marginal ice zone |
publisher |
AGU |
publishDate |
2021 |
url |
https://publications.hereon.de/id/39701 https://publications.hzg.de/id/39701 https://doi.org/10.1029/2020GL090735 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
issn:0094-8276 Thomson, J.; Lund, B.; Hargrove, J.; Smith, M.; Horstmann, J.; MacKinnon, J.: Wave‐Driven Flow Along a Compact Marginal Ice Zone. In: Geophysical Research Letters. Vol. 48 (2021) 3, e2020GL090735. (DOI: /10.1029/2020GL090735) |
op_relation |
https://dx.doi.org/10.1029/2020GL090735 urn:issn:0094-8276 https://publications.hereon.de/id/39701 https://publications.hzg.de/id/39701 |
op_rights |
info:eu-repo/semantics/openAccess open_access oa_allgemein_hybrid |
op_doi |
https://doi.org/10.1029/2020GL090735 |
container_title |
Geophysical Research Letters |
container_volume |
48 |
container_issue |
3 |
_version_ |
1768374953288138752 |