GLACIAL HYDROLOGICAL SYSTEM IN WANDA GLACIER ABLATION AREA, KING GEORGE ISLAND, ANTARCTICA, USING GROUND PENETRATING RADAR
This paper aims to determine the configuration of the drainage system and water storage in Wanda Glacier, located in King George Island (KGI), South Shetland Islands (61°54’ – 62°16’S and 57°35’ – 59°02’W), Antarctic Peninsula, using data obtained by 100 MHz GPR (Ground Penetration Radar) survey. Th...
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Online Access: | http://eduemojs.uem.br/ojs/index.php/BolGeogr/article/view/27545 https://doi.org/10.4025/bolgeogr.v37i1.27545 |
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ftuemperio:oai:periodicos.uem.br/ojs:article/27545 2023-05-15T13:59:28+02:00 GLACIAL HYDROLOGICAL SYSTEM IN WANDA GLACIER ABLATION AREA, KING GEORGE ISLAND, ANTARCTICA, USING GROUND PENETRATING RADAR Rosa, Katia Kellem da Vieira, Rosemary Fernandez, Guilherme Borges Simões, Jefferson Cardia 2019-05-02 application/pdf http://eduemojs.uem.br/ojs/index.php/BolGeogr/article/view/27545 https://doi.org/10.4025/bolgeogr.v37i1.27545 eng eng EDUEM - Editora da Universidade Estadual de Maringá http://eduemojs.uem.br/ojs/index.php/BolGeogr/article/view/27545/pdf http://eduemojs.uem.br/ojs/index.php/BolGeogr/article/view/27545 doi:10.4025/bolgeogr.v37i1.27545 Boletim de Geografia; v. 37 n. 1 (2019); 1-12 2176-4786 0102-5198 Hydrology. Ground-penetration radar. Glacial drainage system. Temperate glacier info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2019 ftuemperio https://doi.org/10.4025/bolgeogr.v37i1.27545 2022-08-26T12:16:58Z This paper aims to determine the configuration of the drainage system and water storage in Wanda Glacier, located in King George Island (KGI), South Shetland Islands (61°54’ – 62°16’S and 57°35’ – 59°02’W), Antarctic Peninsula, using data obtained by 100 MHz GPR (Ground Penetration Radar) survey. This site is characterized by accelerated retraction and melting processes as consequence of a recent regional warming. Topography data were used to generate transversal and longitudinal sections and a three-dimensional model (DSM) of the glacier surface. The GPR system was able to deliver information about the internal structure and about the meltwater drainage configuration. GPR internal reflections are attributed to basal water films and intraglacial and subglacial water channels in the Wanda Glacier. The abundance of internal diffractions is considered an indicative of temperate ice with high liquid water content. Similar internal structures are observed in other glaciers in KGI. The application of GPR to Wanda Glacier study showed the dielectric contrasts, internal layering and englacial structure, glacier bed condition and the distribution of individual channels in the glacier and the englacial and subglacial routing of meltwater. Probably the configuration of a subglacial drainage and water liquid exerts an influence on the sediment evacuation by basal meltwater, subglacial erosion and the proglacial deposition pattern. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica King George Island South Shetland Islands Universidade Estadual de Maringá: Portal de Periódicos da UEM Antarctic Antarctic Peninsula King George Island South Shetland Islands Wanda Glacier ENVELOPE(-58.358,-58.358,-62.108,-62.108) Boletim de Geografia 37 1 1 |
institution |
Open Polar |
collection |
Universidade Estadual de Maringá: Portal de Periódicos da UEM |
op_collection_id |
ftuemperio |
language |
English |
topic |
Hydrology. Ground-penetration radar. Glacial drainage system. Temperate glacier |
spellingShingle |
Hydrology. Ground-penetration radar. Glacial drainage system. Temperate glacier Rosa, Katia Kellem da Vieira, Rosemary Fernandez, Guilherme Borges Simões, Jefferson Cardia GLACIAL HYDROLOGICAL SYSTEM IN WANDA GLACIER ABLATION AREA, KING GEORGE ISLAND, ANTARCTICA, USING GROUND PENETRATING RADAR |
topic_facet |
Hydrology. Ground-penetration radar. Glacial drainage system. Temperate glacier |
description |
This paper aims to determine the configuration of the drainage system and water storage in Wanda Glacier, located in King George Island (KGI), South Shetland Islands (61°54’ – 62°16’S and 57°35’ – 59°02’W), Antarctic Peninsula, using data obtained by 100 MHz GPR (Ground Penetration Radar) survey. This site is characterized by accelerated retraction and melting processes as consequence of a recent regional warming. Topography data were used to generate transversal and longitudinal sections and a three-dimensional model (DSM) of the glacier surface. The GPR system was able to deliver information about the internal structure and about the meltwater drainage configuration. GPR internal reflections are attributed to basal water films and intraglacial and subglacial water channels in the Wanda Glacier. The abundance of internal diffractions is considered an indicative of temperate ice with high liquid water content. Similar internal structures are observed in other glaciers in KGI. The application of GPR to Wanda Glacier study showed the dielectric contrasts, internal layering and englacial structure, glacier bed condition and the distribution of individual channels in the glacier and the englacial and subglacial routing of meltwater. Probably the configuration of a subglacial drainage and water liquid exerts an influence on the sediment evacuation by basal meltwater, subglacial erosion and the proglacial deposition pattern. |
format |
Article in Journal/Newspaper |
author |
Rosa, Katia Kellem da Vieira, Rosemary Fernandez, Guilherme Borges Simões, Jefferson Cardia |
author_facet |
Rosa, Katia Kellem da Vieira, Rosemary Fernandez, Guilherme Borges Simões, Jefferson Cardia |
author_sort |
Rosa, Katia Kellem da |
title |
GLACIAL HYDROLOGICAL SYSTEM IN WANDA GLACIER ABLATION AREA, KING GEORGE ISLAND, ANTARCTICA, USING GROUND PENETRATING RADAR |
title_short |
GLACIAL HYDROLOGICAL SYSTEM IN WANDA GLACIER ABLATION AREA, KING GEORGE ISLAND, ANTARCTICA, USING GROUND PENETRATING RADAR |
title_full |
GLACIAL HYDROLOGICAL SYSTEM IN WANDA GLACIER ABLATION AREA, KING GEORGE ISLAND, ANTARCTICA, USING GROUND PENETRATING RADAR |
title_fullStr |
GLACIAL HYDROLOGICAL SYSTEM IN WANDA GLACIER ABLATION AREA, KING GEORGE ISLAND, ANTARCTICA, USING GROUND PENETRATING RADAR |
title_full_unstemmed |
GLACIAL HYDROLOGICAL SYSTEM IN WANDA GLACIER ABLATION AREA, KING GEORGE ISLAND, ANTARCTICA, USING GROUND PENETRATING RADAR |
title_sort |
glacial hydrological system in wanda glacier ablation area, king george island, antarctica, using ground penetrating radar |
publisher |
EDUEM - Editora da Universidade Estadual de Maringá |
publishDate |
2019 |
url |
http://eduemojs.uem.br/ojs/index.php/BolGeogr/article/view/27545 https://doi.org/10.4025/bolgeogr.v37i1.27545 |
long_lat |
ENVELOPE(-58.358,-58.358,-62.108,-62.108) |
geographic |
Antarctic Antarctic Peninsula King George Island South Shetland Islands Wanda Glacier |
geographic_facet |
Antarctic Antarctic Peninsula King George Island South Shetland Islands Wanda Glacier |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica King George Island South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica King George Island South Shetland Islands |
op_source |
Boletim de Geografia; v. 37 n. 1 (2019); 1-12 2176-4786 0102-5198 |
op_relation |
http://eduemojs.uem.br/ojs/index.php/BolGeogr/article/view/27545/pdf http://eduemojs.uem.br/ojs/index.php/BolGeogr/article/view/27545 doi:10.4025/bolgeogr.v37i1.27545 |
op_doi |
https://doi.org/10.4025/bolgeogr.v37i1.27545 |
container_title |
Boletim de Geografia |
container_volume |
37 |
container_issue |
1 |
container_start_page |
1 |
_version_ |
1766268044091326464 |