Model Predictions of Wave Overwash Extent Into the Marginal Ice Zone.
Saved in:
| Title: | Model Predictions of Wave Overwash Extent Into the Marginal Ice Zone. |
|---|---|
| Authors: | Pitt, Jordan P. A.1 (AUTHOR) jordan.pitt@adelaide.edu.au, Bennetts, Luke G.1 (AUTHOR), Meylan, Michael H.2 (AUTHOR), Massom, Robert A.3,4,5 (AUTHOR), Toffoli, Alessandro6 (AUTHOR) |
| Source: | Journal of Geophysical Research. Oceans. Oct2022, Vol. 127 Issue 10, p1-22. 22p. |
| Subject Terms: | *Ice, *Sea ice, *Ocean waves, Ice floes, Rogue waves, Prediction models, Floating bodies |
| Abstract: | In 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. Plain Language Summary: Wave overwash is the flow of water across the surface of a thin floating body due to passing waves. It is an important process in the marginal ice zone (MIZ) where sea ice floes and ocean waves interact. Overwash reduces the energy of ocean waves, removes snow from, and wets the sea ice surface, which can drive growth or melting. Water left on the sea ice surface can host organisms and affects chemical processes taking place there. Overwash is pervasive in laboratory experiments where it has been measured and studied. In contrast, there are few reports of overwash in the field and the extent of its occurrence has not been measured. We propose a model to predict the region of the MIZ in which overwash occurs. We use the model to compare overwash extents for MIZs associated with the spring–summer ice retreat and autumn–winter ice advance for calm to energetic wave conditions, including the conditions observed during a winter Antarctic icebreaker voyage. For field conditions, the model predicts that overwash typically extends at least several kilometers into the MIZ, indicating that it likely contributes to the ice edge evolution. Key Points: A mathematical model is proposed for the extent of wave overwash of ice floes in the marginal ice zone (MIZ) based on coupled floe–wave motionsFrequent overwash is predicted up to 16 km from the ice edge during a voyage into Antarctic MIZ composed of pancake iceWave overwash is predicted to be a persistent feature of the outermost MIZ, likely contributing to the evolution of the ice edge [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Geophysical Research. Oceans is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | GreenFILE |
| FullText | Text: Availability: 0 |
|---|---|
| Header | DbId: 8gh DbLabel: GreenFILE An: 159906716 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Model Predictions of Wave Overwash Extent Into the Marginal Ice Zone. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Pitt%2C+Jordan+P%2E+A%2E%22">Pitt, Jordan P. A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> jordan.pitt@adelaide.edu.au</i><br /><searchLink fieldCode="AR" term="%22Bennetts%2C+Luke+G%2E%22">Bennetts, Luke G.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Meylan%2C+Michael+H%2E%22">Meylan, Michael H.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Massom%2C+Robert+A%2E%22">Massom, Robert A.</searchLink><relatesTo>3,4,5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Toffoli%2C+Alessandro%22">Toffoli, Alessandro</searchLink><relatesTo>6</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Geophysical+Research%2E+Oceans%22">Journal of Geophysical Research. Oceans</searchLink>. Oct2022, Vol. 127 Issue 10, p1-22. 22p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Ice%22">Ice</searchLink><br />*<searchLink fieldCode="DE" term="%22Sea+ice%22">Sea ice</searchLink><br />*<searchLink fieldCode="DE" term="%22Ocean+waves%22">Ocean waves</searchLink><br /><searchLink fieldCode="DE" term="%22Ice+floes%22">Ice floes</searchLink><br /><searchLink fieldCode="DE" term="%22Rogue+waves%22">Rogue waves</searchLink><br /><searchLink fieldCode="DE" term="%22Prediction+models%22">Prediction models</searchLink><br /><searchLink fieldCode="DE" term="%22Floating+bodies%22">Floating bodies</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In 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. Plain Language Summary: Wave overwash is the flow of water across the surface of a thin floating body due to passing waves. It is an important process in the marginal ice zone (MIZ) where sea ice floes and ocean waves interact. Overwash reduces the energy of ocean waves, removes snow from, and wets the sea ice surface, which can drive growth or melting. Water left on the sea ice surface can host organisms and affects chemical processes taking place there. Overwash is pervasive in laboratory experiments where it has been measured and studied. In contrast, there are few reports of overwash in the field and the extent of its occurrence has not been measured. We propose a model to predict the region of the MIZ in which overwash occurs. We use the model to compare overwash extents for MIZs associated with the spring–summer ice retreat and autumn–winter ice advance for calm to energetic wave conditions, including the conditions observed during a winter Antarctic icebreaker voyage. For field conditions, the model predicts that overwash typically extends at least several kilometers into the MIZ, indicating that it likely contributes to the ice edge evolution. Key Points: A mathematical model is proposed for the extent of wave overwash of ice floes in the marginal ice zone (MIZ) based on coupled floe–wave motionsFrequent overwash is predicted up to 16 km from the ice edge during a voyage into Antarctic MIZ composed of pancake iceWave overwash is predicted to be a persistent feature of the outermost MIZ, likely contributing to the evolution of the ice edge [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Geophysical Research. Oceans is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=8gh&AN=159906716 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1029/2022JC018707 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 22 StartPage: 1 Subjects: – SubjectFull: Ice Type: general – SubjectFull: Sea ice Type: general – SubjectFull: Ocean waves Type: general – SubjectFull: Ice floes Type: general – SubjectFull: Rogue waves Type: general – SubjectFull: Prediction models Type: general – SubjectFull: Floating bodies Type: general Titles: – TitleFull: Model Predictions of Wave Overwash Extent Into the Marginal Ice Zone. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Pitt, Jordan P. A. – PersonEntity: Name: NameFull: Bennetts, Luke G. – PersonEntity: Name: NameFull: Meylan, Michael H. – PersonEntity: Name: NameFull: Massom, Robert A. – PersonEntity: Name: NameFull: Toffoli, Alessandro IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2022 Type: published Y: 2022 Identifiers: – Type: issn-print Value: 21699275 Numbering: – Type: volume Value: 127 – Type: issue Value: 10 Titles: – TitleFull: Journal of Geophysical Research. Oceans Type: main |
| ResultId | 1 |
