Análisis Sedimentológico y geomorfológico de áreas lacustres en la Península Fildes, Isla Rey Jorge, Antártica Marítima
Geomorphological features and sedimentary characteristics are analized from five sets of shallow sediment cores collected in lakes in the Fildes Peninsula, King George Island. The geomorphology of the area was observed and sediments samples were obtained at field activities during the XXXI Brazilian...
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Universidad de Chile. Facultad de Arquitectura y Urbanismo
2015
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ftunivchileojs:oai:ojs.pkp.sfu.ca:article/37511 2023-05-15T14:04:12+02:00 Análisis Sedimentológico y geomorfológico de áreas lacustres en la Península Fildes, Isla Rey Jorge, Antártica Marítima Vieira, Rosemary Marotta, Humberto Kellem da Rosa, Kátia Jaña, Ricardo Lorenz Simões, Carolina de Souza Júnior, Enoil Ferreira, Fabrício Ronquette Santos, Liliane Victor dos Santos, João Aurélio Perroni, Marcos Gonçalves, Matheus Farias Santos, João Pedro Issa Rodrigues, Raphael Medeiros Galvão, Janaína Cynthia de Sá Felizardo, João Paulo 2015-07-29 application/pdf https://revistas.uchile.cl/index.php/IG/article/view/37511 spa spa Universidad de Chile. Facultad de Arquitectura y Urbanismo https://revistas.uchile.cl/index.php/IG/article/view/37511/39189 https://revistas.uchile.cl/index.php/IG/article/view/37511 Investigaciones Geográficas; No. 49 (2015); Pág. 3-30 Investigaciones Geográficas; Núm. 49 (2015); Pág. 3-30 Investigaciones Geográficas; n. 49 (2015); Pág. 3-30 0719-5370 0718-9575 Antarctica Fildes Peninsula sedimentology biogeochemistry lakes info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículos originales evaluados por pares 2015 ftunivchileojs 2022-05-26T08:54:00Z Geomorphological features and sedimentary characteristics are analized from five sets of shallow sediment cores collected in lakes in the Fildes Peninsula, King George Island. The geomorphology of the area was observed and sediments samples were obtained at field activities during the XXXI Brazilian Antarctic Operation (March-April/2013). Biogeochemical characteristics, physical parameters, mineralogical composition, particle size distribution, macroscopic characteristics of the sediments and satellite images were analized. Preliminary results indicate climatic and environmental changes in north-south transect of the peninsula. The mineralogical composition is associated with geological structure of the area, where basaltic rocks predominate. The particle size variation reflects different sediment source environments. Macroscopic analysis and mineralogical composition variation reflect the action of weathering along the peninsula. The sediments also have potential mineralization and subsequent release of greenhouse gases. A preliminary map of the classification of the lakes is presented. In addition, it was identified that wetland sediment presents methane production rates (CH4) about 40 times larger and more sensitive to the effect of global warming compared to lake sediment. Subpolar aquatic ecosystems sediments from Maritime Antarctica can be a preferential site for the effects of climate variability. Article in Journal/Newspaper Antarc* Antarctic Antarctica Antártica King George Island Portal de Revistas Académicas de la Universidad de Chile Antarctic Fildes ENVELOPE(-58.817,-58.817,-62.217,-62.217) Fildes peninsula ENVELOPE(-58.948,-58.948,-62.182,-62.182) Isla Rey Jorge ENVELOPE(-58.250,-58.250,-62.050,-62.050) King George Island península Fildes ENVELOPE(-60.567,-60.567,-63.000,-63.000) Rey Jorge ENVELOPE(-58.050,-58.050,-62.083,-62.083) |
institution |
Open Polar |
collection |
Portal de Revistas Académicas de la Universidad de Chile |
op_collection_id |
ftunivchileojs |
language |
Spanish |
topic |
Antarctica Fildes Peninsula sedimentology biogeochemistry lakes |
spellingShingle |
Antarctica Fildes Peninsula sedimentology biogeochemistry lakes Vieira, Rosemary Marotta, Humberto Kellem da Rosa, Kátia Jaña, Ricardo Lorenz Simões, Carolina de Souza Júnior, Enoil Ferreira, Fabrício Ronquette Santos, Liliane Victor dos Santos, João Aurélio Perroni, Marcos Gonçalves, Matheus Farias Santos, João Pedro Issa Rodrigues, Raphael Medeiros Galvão, Janaína Cynthia de Sá Felizardo, João Paulo Análisis Sedimentológico y geomorfológico de áreas lacustres en la Península Fildes, Isla Rey Jorge, Antártica Marítima |
topic_facet |
Antarctica Fildes Peninsula sedimentology biogeochemistry lakes |
description |
Geomorphological features and sedimentary characteristics are analized from five sets of shallow sediment cores collected in lakes in the Fildes Peninsula, King George Island. The geomorphology of the area was observed and sediments samples were obtained at field activities during the XXXI Brazilian Antarctic Operation (March-April/2013). Biogeochemical characteristics, physical parameters, mineralogical composition, particle size distribution, macroscopic characteristics of the sediments and satellite images were analized. Preliminary results indicate climatic and environmental changes in north-south transect of the peninsula. The mineralogical composition is associated with geological structure of the area, where basaltic rocks predominate. The particle size variation reflects different sediment source environments. Macroscopic analysis and mineralogical composition variation reflect the action of weathering along the peninsula. The sediments also have potential mineralization and subsequent release of greenhouse gases. A preliminary map of the classification of the lakes is presented. In addition, it was identified that wetland sediment presents methane production rates (CH4) about 40 times larger and more sensitive to the effect of global warming compared to lake sediment. Subpolar aquatic ecosystems sediments from Maritime Antarctica can be a preferential site for the effects of climate variability. |
format |
Article in Journal/Newspaper |
author |
Vieira, Rosemary Marotta, Humberto Kellem da Rosa, Kátia Jaña, Ricardo Lorenz Simões, Carolina de Souza Júnior, Enoil Ferreira, Fabrício Ronquette Santos, Liliane Victor dos Santos, João Aurélio Perroni, Marcos Gonçalves, Matheus Farias Santos, João Pedro Issa Rodrigues, Raphael Medeiros Galvão, Janaína Cynthia de Sá Felizardo, João Paulo |
author_facet |
Vieira, Rosemary Marotta, Humberto Kellem da Rosa, Kátia Jaña, Ricardo Lorenz Simões, Carolina de Souza Júnior, Enoil Ferreira, Fabrício Ronquette Santos, Liliane Victor dos Santos, João Aurélio Perroni, Marcos Gonçalves, Matheus Farias Santos, João Pedro Issa Rodrigues, Raphael Medeiros Galvão, Janaína Cynthia de Sá Felizardo, João Paulo |
author_sort |
Vieira, Rosemary |
title |
Análisis Sedimentológico y geomorfológico de áreas lacustres en la Península Fildes, Isla Rey Jorge, Antártica Marítima |
title_short |
Análisis Sedimentológico y geomorfológico de áreas lacustres en la Península Fildes, Isla Rey Jorge, Antártica Marítima |
title_full |
Análisis Sedimentológico y geomorfológico de áreas lacustres en la Península Fildes, Isla Rey Jorge, Antártica Marítima |
title_fullStr |
Análisis Sedimentológico y geomorfológico de áreas lacustres en la Península Fildes, Isla Rey Jorge, Antártica Marítima |
title_full_unstemmed |
Análisis Sedimentológico y geomorfológico de áreas lacustres en la Península Fildes, Isla Rey Jorge, Antártica Marítima |
title_sort |
análisis sedimentológico y geomorfológico de áreas lacustres en la península fildes, isla rey jorge, antártica marítima |
publisher |
Universidad de Chile. Facultad de Arquitectura y Urbanismo |
publishDate |
2015 |
url |
https://revistas.uchile.cl/index.php/IG/article/view/37511 |
long_lat |
ENVELOPE(-58.817,-58.817,-62.217,-62.217) ENVELOPE(-58.948,-58.948,-62.182,-62.182) ENVELOPE(-58.250,-58.250,-62.050,-62.050) ENVELOPE(-60.567,-60.567,-63.000,-63.000) ENVELOPE(-58.050,-58.050,-62.083,-62.083) |
geographic |
Antarctic Fildes Fildes peninsula Isla Rey Jorge King George Island península Fildes Rey Jorge |
geographic_facet |
Antarctic Fildes Fildes peninsula Isla Rey Jorge King George Island península Fildes Rey Jorge |
genre |
Antarc* Antarctic Antarctica Antártica King George Island |
genre_facet |
Antarc* Antarctic Antarctica Antártica King George Island |
op_source |
Investigaciones Geográficas; No. 49 (2015); Pág. 3-30 Investigaciones Geográficas; Núm. 49 (2015); Pág. 3-30 Investigaciones Geográficas; n. 49 (2015); Pág. 3-30 0719-5370 0718-9575 |
op_relation |
https://revistas.uchile.cl/index.php/IG/article/view/37511/39189 https://revistas.uchile.cl/index.php/IG/article/view/37511 |
_version_ |
1766275217215193088 |