Mapping Radar Glacier Zones and Dry Snow Line in the Antarctic Peninsula Using Sentinel-1 Images
Surface snowmelt causes changes in mass and energy balance, and endangers the stabilities of the ice shelves in the Antarctic Peninsula (AP). The dynamic changes of the snow and ice conditions in the AP were observed by Sentinel-1 images with a spatial resolution of 40 m in this study. Snowmelt dete...
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ftdoajarticles:oai:doaj.org/article:c69429ff45104834a9ae2059ac32568a 2023-05-15T14:04:00+02:00 Mapping Radar Glacier Zones and Dry Snow Line in the Antarctic Peninsula Using Sentinel-1 Images Chunxia Zhou Lei Zheng 2017-11-01T00:00:00Z https://doi.org/10.3390/rs9111171 https://doaj.org/article/c69429ff45104834a9ae2059ac32568a EN eng MDPI AG https://www.mdpi.com/2072-4292/9/11/1171 https://doaj.org/toc/2072-4292 2072-4292 doi:10.3390/rs9111171 https://doaj.org/article/c69429ff45104834a9ae2059ac32568a Remote Sensing, Vol 9, Iss 11, p 1171 (2017) snowmelt radar glacier zone dry snow line Antarctic Peninsula Sentinel-1 Science Q article 2017 ftdoajarticles https://doi.org/10.3390/rs9111171 2022-12-31T16:33:33Z Surface snowmelt causes changes in mass and energy balance, and endangers the stabilities of the ice shelves in the Antarctic Peninsula (AP). The dynamic changes of the snow and ice conditions in the AP were observed by Sentinel-1 images with a spatial resolution of 40 m in this study. Snowmelt detected by the special sensor microwave/imager (SSM/I) is used to study the relationship between summer snowmelt and winter synthetic aperture radar (SAR) backscatter. Radar glacier zones (RGZs) classifications were conducted based on their differences in liquid snow content, snow grain size, and the relative elevations. We developed a practical method based on the simulations of a microwave scattering model to classify RGZs by using Sentinel-1 images in the AP. The summer snowmelt detected by SSM/I and Sentinel-1 data are compared between 2014 and 2015. The SSM/I-derived melting days is used to validate the winter dry snow line (DSL). RGZs derived from Sentinel-1 images suggest that snowmelt expanded from inland of the Larsen C Ice Shelf to the coastal area, whereas an opposite direction was found in the George VI Ice Shelf. The long melting season in the grounding zone of the Larsen C Ice Shelf may result from the adiabatically-dried föhn winds on the east side of the AP. As the uppermost limit of summer snowmelt, DSL was mapped based on the winter Sentinel-1 mosaic of the AP. Compared with the SSM/I-derived melting days, the winter DSL mainly distributed in the areas melted for one to three days in summer. DSL elevations on the Palmer Land increased from south to north. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula George VI Ice Shelf Ice Shelf Ice Shelves Palmer Land Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Antarctic Peninsula Palmer Land ENVELOPE(-65.000,-65.000,-71.500,-71.500) George VI Ice Shelf ENVELOPE(-67.840,-67.840,-71.692,-71.692) Remote Sensing 9 11 1171 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
snowmelt radar glacier zone dry snow line Antarctic Peninsula Sentinel-1 Science Q |
spellingShingle |
snowmelt radar glacier zone dry snow line Antarctic Peninsula Sentinel-1 Science Q Chunxia Zhou Lei Zheng Mapping Radar Glacier Zones and Dry Snow Line in the Antarctic Peninsula Using Sentinel-1 Images |
topic_facet |
snowmelt radar glacier zone dry snow line Antarctic Peninsula Sentinel-1 Science Q |
description |
Surface snowmelt causes changes in mass and energy balance, and endangers the stabilities of the ice shelves in the Antarctic Peninsula (AP). The dynamic changes of the snow and ice conditions in the AP were observed by Sentinel-1 images with a spatial resolution of 40 m in this study. Snowmelt detected by the special sensor microwave/imager (SSM/I) is used to study the relationship between summer snowmelt and winter synthetic aperture radar (SAR) backscatter. Radar glacier zones (RGZs) classifications were conducted based on their differences in liquid snow content, snow grain size, and the relative elevations. We developed a practical method based on the simulations of a microwave scattering model to classify RGZs by using Sentinel-1 images in the AP. The summer snowmelt detected by SSM/I and Sentinel-1 data are compared between 2014 and 2015. The SSM/I-derived melting days is used to validate the winter dry snow line (DSL). RGZs derived from Sentinel-1 images suggest that snowmelt expanded from inland of the Larsen C Ice Shelf to the coastal area, whereas an opposite direction was found in the George VI Ice Shelf. The long melting season in the grounding zone of the Larsen C Ice Shelf may result from the adiabatically-dried föhn winds on the east side of the AP. As the uppermost limit of summer snowmelt, DSL was mapped based on the winter Sentinel-1 mosaic of the AP. Compared with the SSM/I-derived melting days, the winter DSL mainly distributed in the areas melted for one to three days in summer. DSL elevations on the Palmer Land increased from south to north. |
format |
Article in Journal/Newspaper |
author |
Chunxia Zhou Lei Zheng |
author_facet |
Chunxia Zhou Lei Zheng |
author_sort |
Chunxia Zhou |
title |
Mapping Radar Glacier Zones and Dry Snow Line in the Antarctic Peninsula Using Sentinel-1 Images |
title_short |
Mapping Radar Glacier Zones and Dry Snow Line in the Antarctic Peninsula Using Sentinel-1 Images |
title_full |
Mapping Radar Glacier Zones and Dry Snow Line in the Antarctic Peninsula Using Sentinel-1 Images |
title_fullStr |
Mapping Radar Glacier Zones and Dry Snow Line in the Antarctic Peninsula Using Sentinel-1 Images |
title_full_unstemmed |
Mapping Radar Glacier Zones and Dry Snow Line in the Antarctic Peninsula Using Sentinel-1 Images |
title_sort |
mapping radar glacier zones and dry snow line in the antarctic peninsula using sentinel-1 images |
publisher |
MDPI AG |
publishDate |
2017 |
url |
https://doi.org/10.3390/rs9111171 https://doaj.org/article/c69429ff45104834a9ae2059ac32568a |
long_lat |
ENVELOPE(-65.000,-65.000,-71.500,-71.500) ENVELOPE(-67.840,-67.840,-71.692,-71.692) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Palmer Land George VI Ice Shelf |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Palmer Land George VI Ice Shelf |
genre |
Antarc* Antarctic Antarctic Peninsula George VI Ice Shelf Ice Shelf Ice Shelves Palmer Land |
genre_facet |
Antarc* Antarctic Antarctic Peninsula George VI Ice Shelf Ice Shelf Ice Shelves Palmer Land |
op_source |
Remote Sensing, Vol 9, Iss 11, p 1171 (2017) |
op_relation |
https://www.mdpi.com/2072-4292/9/11/1171 https://doaj.org/toc/2072-4292 2072-4292 doi:10.3390/rs9111171 https://doaj.org/article/c69429ff45104834a9ae2059ac32568a |
op_doi |
https://doi.org/10.3390/rs9111171 |
container_title |
Remote Sensing |
container_volume |
9 |
container_issue |
11 |
container_start_page |
1171 |
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1766274939115012096 |