Interactive movements of outlet glacier tongue and landfast sea ice in Lützow-Holm Bay, East Antarctica, detected by ALOS-2/PALSAR-2 imagery
The Shirase Glacier, one of the fastest-flowing outlet glaciers in East Antarctica, flows into a bay that is usually covered by landfast sea ice. Although the presence of landfast ice is considered to stabilize glacier tongue, quantitative assessments are insufficient. We investigated the spatiotemp...
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ftdoajarticles:oai:doaj.org/article:3860bb87fddf4eeeafd53e492c8d27d4 2023-05-15T13:53:05+02:00 Interactive movements of outlet glacier tongue and landfast sea ice in Lützow-Holm Bay, East Antarctica, detected by ALOS-2/PALSAR-2 imagery Kazuki Nakamura Shigeru Aoki Tsutomu Yamanokuchi Takeshi Tamura 2022-12-01T00:00:00Z https://doi.org/10.1016/j.srs.2022.100064 https://doaj.org/article/3860bb87fddf4eeeafd53e492c8d27d4 EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S2666017222000268 https://doaj.org/toc/2666-0172 2666-0172 doi:10.1016/j.srs.2022.100064 https://doaj.org/article/3860bb87fddf4eeeafd53e492c8d27d4 Science of Remote Sensing, Vol 6, Iss , Pp 100064- (2022) Physical geography GB3-5030 Science Q article 2022 ftdoajarticles https://doi.org/10.1016/j.srs.2022.100064 2022-12-30T22:29:00Z The Shirase Glacier, one of the fastest-flowing outlet glaciers in East Antarctica, flows into a bay that is usually covered by landfast sea ice. Although the presence of landfast ice is considered to stabilize glacier tongue, quantitative assessments are insufficient. We investigated the spatiotemporal variations in the flow velocities of both the glacier tongue and the surrounding landfast ice using a correlation method with ALOS-2/PALSAR-2 images, before and after a landfast-ice collapse in April 2017. After the collapse, the glacier tongue flow accelerated by 8–15% (0.20–0.38 km a−1). After reestablishment of landfast ice, the flow velocity of the landfast ice in contact with the glacier terminus is 20%–90% of the flow velocity of the glacier terminus The estimates of interactive changes in the motions of both glacier ice and sea ice can be used to quantify the buttress effect, which is a key factor affecting the mass budget of Antarctic outlet glaciers. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Sea ice Shirase Glacier Directory of Open Access Journals: DOAJ Articles Antarctic East Antarctica Lützow-Holm Bay ENVELOPE(38.000,38.000,-69.500,-69.500) Buttress ENVELOPE(-57.083,-57.083,-63.550,-63.550) Shirase Glacier ENVELOPE(39.000,39.000,-70.333,-70.333) Science of Remote Sensing 6 100064 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physical geography GB3-5030 Science Q |
spellingShingle |
Physical geography GB3-5030 Science Q Kazuki Nakamura Shigeru Aoki Tsutomu Yamanokuchi Takeshi Tamura Interactive movements of outlet glacier tongue and landfast sea ice in Lützow-Holm Bay, East Antarctica, detected by ALOS-2/PALSAR-2 imagery |
topic_facet |
Physical geography GB3-5030 Science Q |
description |
The Shirase Glacier, one of the fastest-flowing outlet glaciers in East Antarctica, flows into a bay that is usually covered by landfast sea ice. Although the presence of landfast ice is considered to stabilize glacier tongue, quantitative assessments are insufficient. We investigated the spatiotemporal variations in the flow velocities of both the glacier tongue and the surrounding landfast ice using a correlation method with ALOS-2/PALSAR-2 images, before and after a landfast-ice collapse in April 2017. After the collapse, the glacier tongue flow accelerated by 8–15% (0.20–0.38 km a−1). After reestablishment of landfast ice, the flow velocity of the landfast ice in contact with the glacier terminus is 20%–90% of the flow velocity of the glacier terminus The estimates of interactive changes in the motions of both glacier ice and sea ice can be used to quantify the buttress effect, which is a key factor affecting the mass budget of Antarctic outlet glaciers. |
format |
Article in Journal/Newspaper |
author |
Kazuki Nakamura Shigeru Aoki Tsutomu Yamanokuchi Takeshi Tamura |
author_facet |
Kazuki Nakamura Shigeru Aoki Tsutomu Yamanokuchi Takeshi Tamura |
author_sort |
Kazuki Nakamura |
title |
Interactive movements of outlet glacier tongue and landfast sea ice in Lützow-Holm Bay, East Antarctica, detected by ALOS-2/PALSAR-2 imagery |
title_short |
Interactive movements of outlet glacier tongue and landfast sea ice in Lützow-Holm Bay, East Antarctica, detected by ALOS-2/PALSAR-2 imagery |
title_full |
Interactive movements of outlet glacier tongue and landfast sea ice in Lützow-Holm Bay, East Antarctica, detected by ALOS-2/PALSAR-2 imagery |
title_fullStr |
Interactive movements of outlet glacier tongue and landfast sea ice in Lützow-Holm Bay, East Antarctica, detected by ALOS-2/PALSAR-2 imagery |
title_full_unstemmed |
Interactive movements of outlet glacier tongue and landfast sea ice in Lützow-Holm Bay, East Antarctica, detected by ALOS-2/PALSAR-2 imagery |
title_sort |
interactive movements of outlet glacier tongue and landfast sea ice in lützow-holm bay, east antarctica, detected by alos-2/palsar-2 imagery |
publisher |
Elsevier |
publishDate |
2022 |
url |
https://doi.org/10.1016/j.srs.2022.100064 https://doaj.org/article/3860bb87fddf4eeeafd53e492c8d27d4 |
long_lat |
ENVELOPE(38.000,38.000,-69.500,-69.500) ENVELOPE(-57.083,-57.083,-63.550,-63.550) ENVELOPE(39.000,39.000,-70.333,-70.333) |
geographic |
Antarctic East Antarctica Lützow-Holm Bay Buttress Shirase Glacier |
geographic_facet |
Antarctic East Antarctica Lützow-Holm Bay Buttress Shirase Glacier |
genre |
Antarc* Antarctic Antarctica East Antarctica Sea ice Shirase Glacier |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Sea ice Shirase Glacier |
op_source |
Science of Remote Sensing, Vol 6, Iss , Pp 100064- (2022) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S2666017222000268 https://doaj.org/toc/2666-0172 2666-0172 doi:10.1016/j.srs.2022.100064 https://doaj.org/article/3860bb87fddf4eeeafd53e492c8d27d4 |
op_doi |
https://doi.org/10.1016/j.srs.2022.100064 |
container_title |
Science of Remote Sensing |
container_volume |
6 |
container_start_page |
100064 |
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1766258035214254080 |