A quasi-objective single-buoy approach for understanding Lagrangian coherent structures and sea ice dynamics
Sea ice drift and deformation, namely sea ice dynamics, play a significant role in atmosphere–ice–ocean coupling. Deformation patterns in sea ice can be observed over a wide range of spatial and temporal scales, though high-resolution objective quantification of these features remains difficult. In...
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Copernicus Publications
2023
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Online Access: | https://doi.org/10.5194/tc-17-1545-2023 https://doaj.org/article/3b7bb8e78aae4020ad5d857f01fd6b0d |
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ftdoajarticles:oai:doaj.org/article:3b7bb8e78aae4020ad5d857f01fd6b0d 2023-06-06T11:59:04+02:00 A quasi-objective single-buoy approach for understanding Lagrangian coherent structures and sea ice dynamics N. O. Aksamit R. K. Scharien J. K. Hutchings J. V. Lukovich 2023-04-01T00:00:00Z https://doi.org/10.5194/tc-17-1545-2023 https://doaj.org/article/3b7bb8e78aae4020ad5d857f01fd6b0d EN eng Copernicus Publications https://tc.copernicus.org/articles/17/1545/2023/tc-17-1545-2023.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-17-1545-2023 1994-0416 1994-0424 https://doaj.org/article/3b7bb8e78aae4020ad5d857f01fd6b0d The Cryosphere, Vol 17, Pp 1545-1566 (2023) Environmental sciences GE1-350 Geology QE1-996.5 article 2023 ftdoajarticles https://doi.org/10.5194/tc-17-1545-2023 2023-04-16T00:37:52Z Sea ice drift and deformation, namely sea ice dynamics, play a significant role in atmosphere–ice–ocean coupling. Deformation patterns in sea ice can be observed over a wide range of spatial and temporal scales, though high-resolution objective quantification of these features remains difficult. In an effort to better understand local deformation of sea ice, we adapt the trajectory-stretching exponents (TSEs), quasi-objective measures of Lagrangian stretching in continuous media, to sea ice buoy data and develop a temporal analysis of TSE time series. Our work expands on previous ocean current studies that have shown TSEs provide an approximation of Lagrangian coherent structure diagnostics when only sparse trajectory data are available. As TSEs do not require multiple buoys, we find they have an expanded range of use when compared with traditional Eulerian buoy-array deformation metrics and provide local-stretching information below the length scales possible when averaging over buoy arrays. We verify the ability of TSEs to temporally and spatially identify dynamic features for three different sea ice datasets. The ability of TSEs to quantify trajectory stretching is verified by concurrent ice fracture in buoy neighborhoods ranging from tens to hundreds of kilometers in diameter, as well as the temporal concurrence of significant storm events. Article in Journal/Newspaper Sea ice The Cryosphere Directory of Open Access Journals: DOAJ Articles The Cryosphere 17 4 1545 1566 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 N. O. Aksamit R. K. Scharien J. K. Hutchings J. V. Lukovich A quasi-objective single-buoy approach for understanding Lagrangian coherent structures and sea ice dynamics |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
Sea ice drift and deformation, namely sea ice dynamics, play a significant role in atmosphere–ice–ocean coupling. Deformation patterns in sea ice can be observed over a wide range of spatial and temporal scales, though high-resolution objective quantification of these features remains difficult. In an effort to better understand local deformation of sea ice, we adapt the trajectory-stretching exponents (TSEs), quasi-objective measures of Lagrangian stretching in continuous media, to sea ice buoy data and develop a temporal analysis of TSE time series. Our work expands on previous ocean current studies that have shown TSEs provide an approximation of Lagrangian coherent structure diagnostics when only sparse trajectory data are available. As TSEs do not require multiple buoys, we find they have an expanded range of use when compared with traditional Eulerian buoy-array deformation metrics and provide local-stretching information below the length scales possible when averaging over buoy arrays. We verify the ability of TSEs to temporally and spatially identify dynamic features for three different sea ice datasets. The ability of TSEs to quantify trajectory stretching is verified by concurrent ice fracture in buoy neighborhoods ranging from tens to hundreds of kilometers in diameter, as well as the temporal concurrence of significant storm events. |
format |
Article in Journal/Newspaper |
author |
N. O. Aksamit R. K. Scharien J. K. Hutchings J. V. Lukovich |
author_facet |
N. O. Aksamit R. K. Scharien J. K. Hutchings J. V. Lukovich |
author_sort |
N. O. Aksamit |
title |
A quasi-objective single-buoy approach for understanding Lagrangian coherent structures and sea ice dynamics |
title_short |
A quasi-objective single-buoy approach for understanding Lagrangian coherent structures and sea ice dynamics |
title_full |
A quasi-objective single-buoy approach for understanding Lagrangian coherent structures and sea ice dynamics |
title_fullStr |
A quasi-objective single-buoy approach for understanding Lagrangian coherent structures and sea ice dynamics |
title_full_unstemmed |
A quasi-objective single-buoy approach for understanding Lagrangian coherent structures and sea ice dynamics |
title_sort |
quasi-objective single-buoy approach for understanding lagrangian coherent structures and sea ice dynamics |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/tc-17-1545-2023 https://doaj.org/article/3b7bb8e78aae4020ad5d857f01fd6b0d |
genre |
Sea ice The Cryosphere |
genre_facet |
Sea ice The Cryosphere |
op_source |
The Cryosphere, Vol 17, Pp 1545-1566 (2023) |
op_relation |
https://tc.copernicus.org/articles/17/1545/2023/tc-17-1545-2023.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 doi:10.5194/tc-17-1545-2023 1994-0416 1994-0424 https://doaj.org/article/3b7bb8e78aae4020ad5d857f01fd6b0d |
op_doi |
https://doi.org/10.5194/tc-17-1545-2023 |
container_title |
The Cryosphere |
container_volume |
17 |
container_issue |
4 |
container_start_page |
1545 |
op_container_end_page |
1566 |
_version_ |
1767948745326985216 |