Interannual Variation of Landfast Ice Using Ascending and Descending Sentinel-1 Images from 2019 to 2021: A Case Study of Cambridge Bay
Landfast ice has undergone a dramatic decline in recent decades, imposing potential effects on ice travel for coastal populations, habitats for marine biota, and ice use for industries. The mapping of landfast ice deformation and the investigation of corresponding causes of changes are urgent tasks...
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ftdoajarticles:oai:doaj.org/article:68c186562ae24a7baef01c382595394a 2023-05-15T15:11:52+02:00 Interannual Variation of Landfast Ice Using Ascending and Descending Sentinel-1 Images from 2019 to 2021: A Case Study of Cambridge Bay Yikai Zhu Chunxia Zhou Dongyu Zhu Tao Wang Tengfei Zhang 2023-02-01T00:00:00Z https://doi.org/10.3390/rs15051296 https://doaj.org/article/68c186562ae24a7baef01c382595394a EN eng MDPI AG https://www.mdpi.com/2072-4292/15/5/1296 https://doaj.org/toc/2072-4292 doi:10.3390/rs15051296 2072-4292 https://doaj.org/article/68c186562ae24a7baef01c382595394a Remote Sensing, Vol 15, Iss 1296, p 1296 (2023) landfast ice 2D deformation SBAS-InSAR interannual variation Science Q article 2023 ftdoajarticles https://doi.org/10.3390/rs15051296 2023-03-12T01:28:58Z Landfast ice has undergone a dramatic decline in recent decades, imposing potential effects on ice travel for coastal populations, habitats for marine biota, and ice use for industries. The mapping of landfast ice deformation and the investigation of corresponding causes of changes are urgent tasks that can provide substantial data to support the maintenance of the stability of the Arctic ecosystem and the development of human activities on ice. This work aims to investigate the time-series deformation characteristics of landfast ice at multi-year scales and the corresponding influence factors. For the landfast ice deformation monitoring technique, we first combined the small baseline subset approach with ascending and descending Sentinel-1 images to obtain the line-of-sight deformations for two flight directions, and then we derived the 2D deformation fields comprising the vertical and horizontal directions for the corresponding periods by introducing a transform model. The vertical deformation results were mostly within the interval [−65, 23] cm, while the horizontal displacement was largely within the range of [−26, 78] cm. Moreover, the magnitude of deformation observed in 2019 was evidently greater than those in 2020 and 2021. In accordance with the available data, we speculate that the westerly wind and eastward-flowing ocean currents are the dominant reasons for the variation in the horizontal direction in Cambridge Bay, while the factors causing spatial differences in the vertical direction are the sea-level tilt and ice growth. For the interannual variation, the leading cause is the difference in sea-level tilt. These results can assist in predicting the future deformation of landfast ice and provide a reference for on-ice activities. Article in Journal/Newspaper Arctic Cambridge Bay Directory of Open Access Journals: DOAJ Articles Arctic Cambridge Bay ENVELOPE(-105.130,-105.130,69.037,69.037) Remote Sensing 15 5 1296 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
landfast ice 2D deformation SBAS-InSAR interannual variation Science Q |
spellingShingle |
landfast ice 2D deformation SBAS-InSAR interannual variation Science Q Yikai Zhu Chunxia Zhou Dongyu Zhu Tao Wang Tengfei Zhang Interannual Variation of Landfast Ice Using Ascending and Descending Sentinel-1 Images from 2019 to 2021: A Case Study of Cambridge Bay |
topic_facet |
landfast ice 2D deformation SBAS-InSAR interannual variation Science Q |
description |
Landfast ice has undergone a dramatic decline in recent decades, imposing potential effects on ice travel for coastal populations, habitats for marine biota, and ice use for industries. The mapping of landfast ice deformation and the investigation of corresponding causes of changes are urgent tasks that can provide substantial data to support the maintenance of the stability of the Arctic ecosystem and the development of human activities on ice. This work aims to investigate the time-series deformation characteristics of landfast ice at multi-year scales and the corresponding influence factors. For the landfast ice deformation monitoring technique, we first combined the small baseline subset approach with ascending and descending Sentinel-1 images to obtain the line-of-sight deformations for two flight directions, and then we derived the 2D deformation fields comprising the vertical and horizontal directions for the corresponding periods by introducing a transform model. The vertical deformation results were mostly within the interval [−65, 23] cm, while the horizontal displacement was largely within the range of [−26, 78] cm. Moreover, the magnitude of deformation observed in 2019 was evidently greater than those in 2020 and 2021. In accordance with the available data, we speculate that the westerly wind and eastward-flowing ocean currents are the dominant reasons for the variation in the horizontal direction in Cambridge Bay, while the factors causing spatial differences in the vertical direction are the sea-level tilt and ice growth. For the interannual variation, the leading cause is the difference in sea-level tilt. These results can assist in predicting the future deformation of landfast ice and provide a reference for on-ice activities. |
format |
Article in Journal/Newspaper |
author |
Yikai Zhu Chunxia Zhou Dongyu Zhu Tao Wang Tengfei Zhang |
author_facet |
Yikai Zhu Chunxia Zhou Dongyu Zhu Tao Wang Tengfei Zhang |
author_sort |
Yikai Zhu |
title |
Interannual Variation of Landfast Ice Using Ascending and Descending Sentinel-1 Images from 2019 to 2021: A Case Study of Cambridge Bay |
title_short |
Interannual Variation of Landfast Ice Using Ascending and Descending Sentinel-1 Images from 2019 to 2021: A Case Study of Cambridge Bay |
title_full |
Interannual Variation of Landfast Ice Using Ascending and Descending Sentinel-1 Images from 2019 to 2021: A Case Study of Cambridge Bay |
title_fullStr |
Interannual Variation of Landfast Ice Using Ascending and Descending Sentinel-1 Images from 2019 to 2021: A Case Study of Cambridge Bay |
title_full_unstemmed |
Interannual Variation of Landfast Ice Using Ascending and Descending Sentinel-1 Images from 2019 to 2021: A Case Study of Cambridge Bay |
title_sort |
interannual variation of landfast ice using ascending and descending sentinel-1 images from 2019 to 2021: a case study of cambridge bay |
publisher |
MDPI AG |
publishDate |
2023 |
url |
https://doi.org/10.3390/rs15051296 https://doaj.org/article/68c186562ae24a7baef01c382595394a |
long_lat |
ENVELOPE(-105.130,-105.130,69.037,69.037) |
geographic |
Arctic Cambridge Bay |
geographic_facet |
Arctic Cambridge Bay |
genre |
Arctic Cambridge Bay |
genre_facet |
Arctic Cambridge Bay |
op_source |
Remote Sensing, Vol 15, Iss 1296, p 1296 (2023) |
op_relation |
https://www.mdpi.com/2072-4292/15/5/1296 https://doaj.org/toc/2072-4292 doi:10.3390/rs15051296 2072-4292 https://doaj.org/article/68c186562ae24a7baef01c382595394a |
op_doi |
https://doi.org/10.3390/rs15051296 |
container_title |
Remote Sensing |
container_volume |
15 |
container_issue |
5 |
container_start_page |
1296 |
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1766342649090932736 |