SAR Observation of Waves under Ice in the Marginal Ice Zone
The marginal ice zone (MIZ) connects the open ocean and the pack ice, playing significant roles in shaping the ice edge and wave–ice interaction. Spaceborne synthetic aperture radar (SAR) has been demonstrated to be one of the most advantageous sensors for MIZ exploration given its capability to col...
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Online Access: | https://doi.org/10.3390/jmse10121836 |
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ftmdpi:oai:mdpi.com:/2077-1312/10/12/1836/ 2023-08-20T04:02:25+02:00 SAR Observation of Waves under Ice in the Marginal Ice Zone Ziyue Dai Huimin Li Dongbo Liu Chen Wang Lijian Shi Yijun He agris 2022-11-29 application/pdf https://doi.org/10.3390/jmse10121836 EN eng Multidisciplinary Digital Publishing Institute Physical Oceanography https://dx.doi.org/10.3390/jmse10121836 https://creativecommons.org/licenses/by/4.0/ Journal of Marine Science and Engineering; Volume 10; Issue 12; Pages: 1836 Sentinel-1 wave mode marginal ice zone azimuth cutoff Text 2022 ftmdpi https://doi.org/10.3390/jmse10121836 2023-08-01T07:34:27Z The marginal ice zone (MIZ) connects the open ocean and the pack ice, playing significant roles in shaping the ice edge and wave–ice interaction. Spaceborne synthetic aperture radar (SAR) has been demonstrated to be one of the most advantageous sensors for MIZ exploration given its capability to collect images under all weather conditions during day and night. In this study, we take advantage of the Sentinel-1 wave mode vignettes acquired around the Antarctic to quantify the image properties over MIZ. A data set of SAR images covering the ice edge with both open water and sea ice present in the same scene was created by manual inspection. It is found that the radar return over sea ice decreases by an average of approximately 1.78 dB in comparison to its adjacent open water, which is roughly independent of the polarizations and incidence angles. The long ocean waves are barely attenuated right across the ice edge in terms of their comparable azimuth cutoff. Further inside the ice from the edge, the waves are gradually dampened out at distances associated with their wavelengths. The results obtained in this study shall help interpret the radar scattering model validation as well as the wave–ice interaction. Text Antarc* Antarctic Sea ice MDPI Open Access Publishing Antarctic The Antarctic The Sentinel ENVELOPE(73.317,73.317,-52.983,-52.983) Journal of Marine Science and Engineering 10 12 1836 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
Sentinel-1 wave mode marginal ice zone azimuth cutoff |
spellingShingle |
Sentinel-1 wave mode marginal ice zone azimuth cutoff Ziyue Dai Huimin Li Dongbo Liu Chen Wang Lijian Shi Yijun He SAR Observation of Waves under Ice in the Marginal Ice Zone |
topic_facet |
Sentinel-1 wave mode marginal ice zone azimuth cutoff |
description |
The marginal ice zone (MIZ) connects the open ocean and the pack ice, playing significant roles in shaping the ice edge and wave–ice interaction. Spaceborne synthetic aperture radar (SAR) has been demonstrated to be one of the most advantageous sensors for MIZ exploration given its capability to collect images under all weather conditions during day and night. In this study, we take advantage of the Sentinel-1 wave mode vignettes acquired around the Antarctic to quantify the image properties over MIZ. A data set of SAR images covering the ice edge with both open water and sea ice present in the same scene was created by manual inspection. It is found that the radar return over sea ice decreases by an average of approximately 1.78 dB in comparison to its adjacent open water, which is roughly independent of the polarizations and incidence angles. The long ocean waves are barely attenuated right across the ice edge in terms of their comparable azimuth cutoff. Further inside the ice from the edge, the waves are gradually dampened out at distances associated with their wavelengths. The results obtained in this study shall help interpret the radar scattering model validation as well as the wave–ice interaction. |
format |
Text |
author |
Ziyue Dai Huimin Li Dongbo Liu Chen Wang Lijian Shi Yijun He |
author_facet |
Ziyue Dai Huimin Li Dongbo Liu Chen Wang Lijian Shi Yijun He |
author_sort |
Ziyue Dai |
title |
SAR Observation of Waves under Ice in the Marginal Ice Zone |
title_short |
SAR Observation of Waves under Ice in the Marginal Ice Zone |
title_full |
SAR Observation of Waves under Ice in the Marginal Ice Zone |
title_fullStr |
SAR Observation of Waves under Ice in the Marginal Ice Zone |
title_full_unstemmed |
SAR Observation of Waves under Ice in the Marginal Ice Zone |
title_sort |
sar observation of waves under ice in the marginal ice zone |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/jmse10121836 |
op_coverage |
agris |
long_lat |
ENVELOPE(73.317,73.317,-52.983,-52.983) |
geographic |
Antarctic The Antarctic The Sentinel |
geographic_facet |
Antarctic The Antarctic The Sentinel |
genre |
Antarc* Antarctic Sea ice |
genre_facet |
Antarc* Antarctic Sea ice |
op_source |
Journal of Marine Science and Engineering; Volume 10; Issue 12; Pages: 1836 |
op_relation |
Physical Oceanography https://dx.doi.org/10.3390/jmse10121836 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/jmse10121836 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
10 |
container_issue |
12 |
container_start_page |
1836 |
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1774712851308478464 |