Reconstructing the pattern and style of deglaciation in Professor Glacier, King George Island, South Shetlands, Antarctica
This paper presents the application of glacial geomorphological maps for reconstructing the pattern and style of deglaciation of Professor Glacier, located at King George, South Shetland Islands, Antarctica. The geomorphological maps were compiled from aerial photographs and multitemporal satellite...
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2012
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ftunisinosojs:oai:ojs.www.unisinos.br:article/4530 2023-05-15T13:51:35+02:00 Reconstructing the pattern and style of deglaciation in Professor Glacier, King George Island, South Shetlands, Antarctica Reconstrução do padrão e estilo de deglaciação da Geleira Professor, Ilha Rei George, Shetlands do Sul, Antártica da Rosa, Kátia Kellem de Souza Junior, Enoil Vieira, Rosemary Mendes Jr., Claudio Wilson Simões, Jefferson Cardia 2012-07-10 http://revistas.unisinos.br/index.php/gaea/article/view/4530 https://doi.org/10.4013/4530 eng eng Gaea - Journal of Geoscience http://revistas.unisinos.br/index.php/gaea/article/view/4530/1752 http://revistas.unisinos.br/index.php/gaea/article/view/4530 doi:10.4013/4530 Gaea - Journal of Geoscience; v. 7, n. 2 (2011): jul/dez; 112-116 1983-3628 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2012 ftunisinosojs https://doi.org/10.4013/4530 2021-02-22T08:52:37Z This paper presents the application of glacial geomorphological maps for reconstructing the pattern and style of deglaciation of Professor Glacier, located at King George, South Shetland Islands, Antarctica. The geomorphological maps were compiled from aerial photographs and multitemporal satellite images, and were based on topographic profiles derived from a Digital Elevation Model. In these maps several glacial features were identified, such as moraines, meltwater channels and a U-shaped valley. The mapped data indicated that Professor Glacier area, with 0.91 km2 in 2006, showed a total loss of 0.50 km² since 1979, without frontal position advance during this period. The frontal retreat exposed the local environment and makes it susceptible to rapid post-depositional changes. The study may lead to a better understanding of glacial and periglacial processes linked to glacier geomorphology and more specifically to that from Professor Glacier. Moreover, the geomorphological maps produced can be used for monitoring local environmental changes.Key words: glacial reconstruction, proglacial geomorphology, Professor Glacier, King George Island. Este artigo utiliza mapas geomorfológicos glaciais, na reconstrução do padrão e estilo de deglaciação da geleira Professor, localizada na ilha King George, ilhas Shetland do Sul, Antártica. Os mapas geomorfológicos foram elaborados a partir de fotografias aéreas e imagens de satélite multitemporais, além de perfis do terreno derivados de levantamento topográfico. Foram identificadas várias feições glaciais, como morainas, canais de água de degelo e vales em forma de U. Os dados mapeados indicam que a área da geleira Professor, de 0,91 km² em 2006, apresentou uma perda total de 0,50 km² desde 1979, sem que houvesse avanço da sua posição frontal no período. Com o processo de retração parte da paisagem foi exposta e sujeita às alterações ambientais. O presente estudo contribui para um melhor entendimento dos processos glaciais e periglaciais em geral e, mais especificamente, com aqueles relacionados com a geomorfologia da geleira Professor. Além disto, os mapas geomofológicos produzidos podem ser úteis no monitoramento de mudanças locais.Palavras-chave: reconstrução glacial, geomorfologia proglacial, geleira Professor, ilha Rei George. Article in Journal/Newspaper Antarc* Antarctica Antártica King George Island South Shetland Islands Unisinos (Universidade do Vale do Rio dos Sinos): SEER Unisinos King George Island Professor Glacier ENVELOPE(-58.317,-58.317,-62.092,-62.092) South Shetland Islands |
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Open Polar |
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Unisinos (Universidade do Vale do Rio dos Sinos): SEER Unisinos |
op_collection_id |
ftunisinosojs |
language |
English |
description |
This paper presents the application of glacial geomorphological maps for reconstructing the pattern and style of deglaciation of Professor Glacier, located at King George, South Shetland Islands, Antarctica. The geomorphological maps were compiled from aerial photographs and multitemporal satellite images, and were based on topographic profiles derived from a Digital Elevation Model. In these maps several glacial features were identified, such as moraines, meltwater channels and a U-shaped valley. The mapped data indicated that Professor Glacier area, with 0.91 km2 in 2006, showed a total loss of 0.50 km² since 1979, without frontal position advance during this period. The frontal retreat exposed the local environment and makes it susceptible to rapid post-depositional changes. The study may lead to a better understanding of glacial and periglacial processes linked to glacier geomorphology and more specifically to that from Professor Glacier. Moreover, the geomorphological maps produced can be used for monitoring local environmental changes.Key words: glacial reconstruction, proglacial geomorphology, Professor Glacier, King George Island. Este artigo utiliza mapas geomorfológicos glaciais, na reconstrução do padrão e estilo de deglaciação da geleira Professor, localizada na ilha King George, ilhas Shetland do Sul, Antártica. Os mapas geomorfológicos foram elaborados a partir de fotografias aéreas e imagens de satélite multitemporais, além de perfis do terreno derivados de levantamento topográfico. Foram identificadas várias feições glaciais, como morainas, canais de água de degelo e vales em forma de U. Os dados mapeados indicam que a área da geleira Professor, de 0,91 km² em 2006, apresentou uma perda total de 0,50 km² desde 1979, sem que houvesse avanço da sua posição frontal no período. Com o processo de retração parte da paisagem foi exposta e sujeita às alterações ambientais. O presente estudo contribui para um melhor entendimento dos processos glaciais e periglaciais em geral e, mais especificamente, com aqueles relacionados com a geomorfologia da geleira Professor. Além disto, os mapas geomofológicos produzidos podem ser úteis no monitoramento de mudanças locais.Palavras-chave: reconstrução glacial, geomorfologia proglacial, geleira Professor, ilha Rei George. |
format |
Article in Journal/Newspaper |
author |
da Rosa, Kátia Kellem de Souza Junior, Enoil Vieira, Rosemary Mendes Jr., Claudio Wilson Simões, Jefferson Cardia |
spellingShingle |
da Rosa, Kátia Kellem de Souza Junior, Enoil Vieira, Rosemary Mendes Jr., Claudio Wilson Simões, Jefferson Cardia Reconstructing the pattern and style of deglaciation in Professor Glacier, King George Island, South Shetlands, Antarctica |
author_facet |
da Rosa, Kátia Kellem de Souza Junior, Enoil Vieira, Rosemary Mendes Jr., Claudio Wilson Simões, Jefferson Cardia |
author_sort |
da Rosa, Kátia Kellem |
title |
Reconstructing the pattern and style of deglaciation in Professor Glacier, King George Island, South Shetlands, Antarctica |
title_short |
Reconstructing the pattern and style of deglaciation in Professor Glacier, King George Island, South Shetlands, Antarctica |
title_full |
Reconstructing the pattern and style of deglaciation in Professor Glacier, King George Island, South Shetlands, Antarctica |
title_fullStr |
Reconstructing the pattern and style of deglaciation in Professor Glacier, King George Island, South Shetlands, Antarctica |
title_full_unstemmed |
Reconstructing the pattern and style of deglaciation in Professor Glacier, King George Island, South Shetlands, Antarctica |
title_sort |
reconstructing the pattern and style of deglaciation in professor glacier, king george island, south shetlands, antarctica |
publisher |
Gaea - Journal of Geoscience |
publishDate |
2012 |
url |
http://revistas.unisinos.br/index.php/gaea/article/view/4530 https://doi.org/10.4013/4530 |
long_lat |
ENVELOPE(-58.317,-58.317,-62.092,-62.092) |
geographic |
King George Island Professor Glacier South Shetland Islands |
geographic_facet |
King George Island Professor Glacier South Shetland Islands |
genre |
Antarc* Antarctica Antártica King George Island South Shetland Islands |
genre_facet |
Antarc* Antarctica Antártica King George Island South Shetland Islands |
op_source |
Gaea - Journal of Geoscience; v. 7, n. 2 (2011): jul/dez; 112-116 1983-3628 |
op_relation |
http://revistas.unisinos.br/index.php/gaea/article/view/4530/1752 http://revistas.unisinos.br/index.php/gaea/article/view/4530 doi:10.4013/4530 |
op_doi |
https://doi.org/10.4013/4530 |
_version_ |
1766255552808091648 |