Glacier fluctuations and a proglacial evolution in King George Bay (King George Island), Antarctica, since 1980 decade
Abstract This study aims to investigate the glacier shrinkage and recent proglacial environment in King George Bay, Antarctica, since 1988 in response to climate change. Remote sensing data (SPOT, Sentinel, Landsat and Planet Scope images) were applied to glacial landforms and ice-marginal fluctuati...
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ftdoajarticles:oai:doaj.org/article:c8626de9cf3443158477b3c59f948181 2024-01-21T10:01:43+01:00 Glacier fluctuations and a proglacial evolution in King George Bay (King George Island), Antarctica, since 1980 decade KÁTIA K. DA ROSA CLEIVA PERONDI JÚLIA L. LORENZ JEFFREY D. AUGER PAMELA CAZAROTO CARINA PETSCH RAFAEL G. SIQUEIRA JEFFERSON C. SIMÕES ROSEMARY VIEIRA 2023-12-01T00:00:00Z https://doi.org/10.1590/0001-3765202320230624 https://doaj.org/article/c8626de9cf3443158477b3c59f948181 EN eng Academia Brasileira de Ciências http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652023000601114&lng=en&tlng=en http://www.scielo.br/pdf/aabc/v95s3/0001-3765-aabc-95-s3-e20230624.pdf https://doaj.org/toc/1678-2690 1678-2690 doi:10.1590/0001-3765202320230624 https://doaj.org/article/c8626de9cf3443158477b3c59f948181 Anais da Academia Brasileira de Ciências, Vol 95, Iss suppl 3 (2023) Geographical Information System polar regions shrinkage environmental change morainal landforms climate change Science Q article 2023 ftdoajarticles https://doi.org/10.1590/0001-3765202320230624 2023-12-24T01:45:06Z Abstract This study aims to investigate the glacier shrinkage and recent proglacial environment in King George Bay, Antarctica, since 1988 in response to climate change. Remote sensing data (SPOT, Sentinel, Landsat and Planet Scope images) were applied to glacial landforms and ice-marginal fluctuations mapping. Annual mean near-surface air temperature reanalysis solutions from ERA-Interim were analyzed. Moraines and glaciofluvial landforms were identified. The Ana Northern Glacier has the highest retreat value (3.64 km) (and area loss of 31%) in response to higher depth in frontal ice-margin and reveal ocean-glacier linkages. The Ana South Glacier changed from a tidewater glacier to land-terminating after 1995, and had an outline minimum elevation variation of 89 meters, a shrinkage of 0.63 km, and a new proglacial subaerial sector. The Ana South Glacier foreland had recessional moraines (probably formed between 1995 and 2022), lagoons, and lakes. There are many flutings in low-relief environments. The 1980-1989, 1990-1999, 2000-2009, 2010-2019 anomaly plots concerning to the 1980-2019 average for atmospheric temperature, are shown to be a driver of the local glacial trends. Article in Journal/Newspaper Antarc* Antarctica King George Island Tidewater Directory of Open Access Journals: DOAJ Articles George Bay ENVELOPE(-36.239,-36.239,-54.370,-54.370) King George Bay ENVELOPE(-58.066,-58.066,-62.100,-62.100) King George Island Anais da Academia Brasileira de Ciências 95 suppl 3 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geographical Information System polar regions shrinkage environmental change morainal landforms climate change Science Q |
spellingShingle |
Geographical Information System polar regions shrinkage environmental change morainal landforms climate change Science Q KÁTIA K. DA ROSA CLEIVA PERONDI JÚLIA L. LORENZ JEFFREY D. AUGER PAMELA CAZAROTO CARINA PETSCH RAFAEL G. SIQUEIRA JEFFERSON C. SIMÕES ROSEMARY VIEIRA Glacier fluctuations and a proglacial evolution in King George Bay (King George Island), Antarctica, since 1980 decade |
topic_facet |
Geographical Information System polar regions shrinkage environmental change morainal landforms climate change Science Q |
description |
Abstract This study aims to investigate the glacier shrinkage and recent proglacial environment in King George Bay, Antarctica, since 1988 in response to climate change. Remote sensing data (SPOT, Sentinel, Landsat and Planet Scope images) were applied to glacial landforms and ice-marginal fluctuations mapping. Annual mean near-surface air temperature reanalysis solutions from ERA-Interim were analyzed. Moraines and glaciofluvial landforms were identified. The Ana Northern Glacier has the highest retreat value (3.64 km) (and area loss of 31%) in response to higher depth in frontal ice-margin and reveal ocean-glacier linkages. The Ana South Glacier changed from a tidewater glacier to land-terminating after 1995, and had an outline minimum elevation variation of 89 meters, a shrinkage of 0.63 km, and a new proglacial subaerial sector. The Ana South Glacier foreland had recessional moraines (probably formed between 1995 and 2022), lagoons, and lakes. There are many flutings in low-relief environments. The 1980-1989, 1990-1999, 2000-2009, 2010-2019 anomaly plots concerning to the 1980-2019 average for atmospheric temperature, are shown to be a driver of the local glacial trends. |
format |
Article in Journal/Newspaper |
author |
KÁTIA K. DA ROSA CLEIVA PERONDI JÚLIA L. LORENZ JEFFREY D. AUGER PAMELA CAZAROTO CARINA PETSCH RAFAEL G. SIQUEIRA JEFFERSON C. SIMÕES ROSEMARY VIEIRA |
author_facet |
KÁTIA K. DA ROSA CLEIVA PERONDI JÚLIA L. LORENZ JEFFREY D. AUGER PAMELA CAZAROTO CARINA PETSCH RAFAEL G. SIQUEIRA JEFFERSON C. SIMÕES ROSEMARY VIEIRA |
author_sort |
KÁTIA K. DA ROSA |
title |
Glacier fluctuations and a proglacial evolution in King George Bay (King George Island), Antarctica, since 1980 decade |
title_short |
Glacier fluctuations and a proglacial evolution in King George Bay (King George Island), Antarctica, since 1980 decade |
title_full |
Glacier fluctuations and a proglacial evolution in King George Bay (King George Island), Antarctica, since 1980 decade |
title_fullStr |
Glacier fluctuations and a proglacial evolution in King George Bay (King George Island), Antarctica, since 1980 decade |
title_full_unstemmed |
Glacier fluctuations and a proglacial evolution in King George Bay (King George Island), Antarctica, since 1980 decade |
title_sort |
glacier fluctuations and a proglacial evolution in king george bay (king george island), antarctica, since 1980 decade |
publisher |
Academia Brasileira de Ciências |
publishDate |
2023 |
url |
https://doi.org/10.1590/0001-3765202320230624 https://doaj.org/article/c8626de9cf3443158477b3c59f948181 |
long_lat |
ENVELOPE(-36.239,-36.239,-54.370,-54.370) ENVELOPE(-58.066,-58.066,-62.100,-62.100) |
geographic |
George Bay King George Bay King George Island |
geographic_facet |
George Bay King George Bay King George Island |
genre |
Antarc* Antarctica King George Island Tidewater |
genre_facet |
Antarc* Antarctica King George Island Tidewater |
op_source |
Anais da Academia Brasileira de Ciências, Vol 95, Iss suppl 3 (2023) |
op_relation |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652023000601114&lng=en&tlng=en http://www.scielo.br/pdf/aabc/v95s3/0001-3765-aabc-95-s3-e20230624.pdf https://doaj.org/toc/1678-2690 1678-2690 doi:10.1590/0001-3765202320230624 https://doaj.org/article/c8626de9cf3443158477b3c59f948181 |
op_doi |
https://doi.org/10.1590/0001-3765202320230624 |
container_title |
Anais da Academia Brasileira de Ciências |
container_volume |
95 |
container_issue |
suppl 3 |
_version_ |
1788691775356928000 |