Local influences of geothermal anomalies on permafrost distribution in an active volcanic island (Deception Island, Antarctica)

Autores
Goyanes, Gabriel Alejandro; Vieira, G.; Caselli, Alberto Tomás; Cardoso, M.; Marmy, A.; Santos, F.; Bernardo, I.; Hauck, C.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This study aims at understanding the spatial distribution and characteristics of the frozen and unfrozen terrain in an alluvial fan on Deception Island, which is an active strato-volcano located in the Bransfield Strait (South Shetland Islands) with recent eruptions in 1967, 1969 and 1970. The alluvial fan is dominated by debris-flow, run-off and rock fall processes and permafrost occurs in several parts in the vicinity of anomalous geothermal heat flux. The aim is to assess the ways volcanic activity controls permafrost development and associated geomorphic dynamics using shallow subsurface, surface and air temperature measurements as well as thaw depth and electrical resistivity tomography (ERT) surveys.Results show a temperature increase with depth in the lower part of the fan reaching 13. °C at 0.80. m depth, without the presence of permafrost. The shallow borehole located at this site showed a stable thermal stratification all year-round, with only the upper 0.20. m reacting to meteorological forcing. In the upper part of the alluvial fan and debris cones, c. 100. m from the coast, frozen ground is present at c. 0.70. m depth. There, the shallow borehole shows a good coupling with air temperatures and the thermal regime favours the presence of permafrost. ERT shows the lowest resistivity values in the lower part of the alluvial fan and a highly resistivity zone in the upper sector of the fan and in the debris cones. These large variations in resistivity mark the presence of a saline water wedge from the sea into the fan, reaching frozen ground conditions about 100. m inland. It can be shown that the volcano-hydrothermal activity only inhibits frost development very locally, with frozen ground conditions occurring about 100. m away.
Fil: Goyanes, Gabriel Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Vieira, G.. Universidade de Lisboa; Portugal
Fil: Caselli, Alberto Tomás. Universidad Nacional de Río Negro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Cardoso, M.. Universidade de Lisboa; Portugal
Fil: Marmy, A.. University of Fribourg; Suiza
Fil: Santos, F.. Universidade de Lisboa; Portugal
Fil: Bernardo, I.. Universidade de Lisboa; Portugal
Fil: Hauck, C.. University Of Fribourg; Suiza
Materia
ACTIVE VOLCANO
ANTARCTICA
DECEPTION ISLAND
GEOTHERMAL ANOMALY
PERMAFROST
SOUTH SHETLANDS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/84826
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/84826
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Local influences of geothermal anomalies on permafrost distribution in an active volcanic island (Deception Island, Antarctica)Goyanes, Gabriel AlejandroVieira, G.Caselli, Alberto TomásCardoso, M.Marmy, A.Santos, F.Bernardo, I.Hauck, C.ACTIVE VOLCANOANTARCTICADECEPTION ISLANDGEOTHERMAL ANOMALYPERMAFROSTSOUTH SHETLANDShttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1This study aims at understanding the spatial distribution and characteristics of the frozen and unfrozen terrain in an alluvial fan on Deception Island, which is an active strato-volcano located in the Bransfield Strait (South Shetland Islands) with recent eruptions in 1967, 1969 and 1970. The alluvial fan is dominated by debris-flow, run-off and rock fall processes and permafrost occurs in several parts in the vicinity of anomalous geothermal heat flux. The aim is to assess the ways volcanic activity controls permafrost development and associated geomorphic dynamics using shallow subsurface, surface and air temperature measurements as well as thaw depth and electrical resistivity tomography (ERT) surveys.Results show a temperature increase with depth in the lower part of the fan reaching 13. °C at 0.80. m depth, without the presence of permafrost. The shallow borehole located at this site showed a stable thermal stratification all year-round, with only the upper 0.20. m reacting to meteorological forcing. In the upper part of the alluvial fan and debris cones, c. 100. m from the coast, frozen ground is present at c. 0.70. m depth. There, the shallow borehole shows a good coupling with air temperatures and the thermal regime favours the presence of permafrost. ERT shows the lowest resistivity values in the lower part of the alluvial fan and a highly resistivity zone in the upper sector of the fan and in the debris cones. These large variations in resistivity mark the presence of a saline water wedge from the sea into the fan, reaching frozen ground conditions about 100. m inland. It can be shown that the volcano-hydrothermal activity only inhibits frost development very locally, with frozen ground conditions occurring about 100. m away.Fil: Goyanes, Gabriel Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Vieira, G.. Universidade de Lisboa; PortugalFil: Caselli, Alberto Tomás. Universidad Nacional de Río Negro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Cardoso, M.. Universidade de Lisboa; PortugalFil: Marmy, A.. University of Fribourg; SuizaFil: Santos, F.. Universidade de Lisboa; PortugalFil: Bernardo, I.. Universidade de Lisboa; PortugalFil: Hauck, C.. University Of Fribourg; SuizaElsevier Science2014-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/84826Goyanes, Gabriel Alejandro; Vieira, G.; Caselli, Alberto Tomás; Cardoso, M.; Marmy, A.; et al.; Local influences of geothermal anomalies on permafrost distribution in an active volcanic island (Deception Island, Antarctica); Elsevier Science; Geomorphology; 225; 4-2014; 57-680169-555XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.geomorph.2014.04.010info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0169555X14001950info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:47:03Zoai:ri.conicet.gov.ar:11336/84826instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:47:03.966CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Local influences of geothermal anomalies on permafrost distribution in an active volcanic island (Deception Island, Antarctica)
title Local influences of geothermal anomalies on permafrost distribution in an active volcanic island (Deception Island, Antarctica)
spellingShingle Local influences of geothermal anomalies on permafrost distribution in an active volcanic island (Deception Island, Antarctica)
Goyanes, Gabriel Alejandro
ACTIVE VOLCANO
ANTARCTICA
DECEPTION ISLAND
GEOTHERMAL ANOMALY
PERMAFROST
SOUTH SHETLANDS
title_short Local influences of geothermal anomalies on permafrost distribution in an active volcanic island (Deception Island, Antarctica)
title_full Local influences of geothermal anomalies on permafrost distribution in an active volcanic island (Deception Island, Antarctica)
title_fullStr Local influences of geothermal anomalies on permafrost distribution in an active volcanic island (Deception Island, Antarctica)
title_full_unstemmed Local influences of geothermal anomalies on permafrost distribution in an active volcanic island (Deception Island, Antarctica)
title_sort Local influences of geothermal anomalies on permafrost distribution in an active volcanic island (Deception Island, Antarctica)
dc.creator.none.fl_str_mv Goyanes, Gabriel Alejandro
Vieira, G.
Caselli, Alberto Tomás
Cardoso, M.
Marmy, A.
Santos, F.
Bernardo, I.
Hauck, C.
author Goyanes, Gabriel Alejandro
author_facet Goyanes, Gabriel Alejandro
Vieira, G.
Caselli, Alberto Tomás
Cardoso, M.
Marmy, A.
Santos, F.
Bernardo, I.
Hauck, C.
author_role author
author2 Vieira, G.
Caselli, Alberto Tomás
Cardoso, M.
Marmy, A.
Santos, F.
Bernardo, I.
Hauck, C.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv ACTIVE VOLCANO
ANTARCTICA
DECEPTION ISLAND
GEOTHERMAL ANOMALY
PERMAFROST
SOUTH SHETLANDS
topic ACTIVE VOLCANO
ANTARCTICA
DECEPTION ISLAND
GEOTHERMAL ANOMALY
PERMAFROST
SOUTH SHETLANDS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv This study aims at understanding the spatial distribution and characteristics of the frozen and unfrozen terrain in an alluvial fan on Deception Island, which is an active strato-volcano located in the Bransfield Strait (South Shetland Islands) with recent eruptions in 1967, 1969 and 1970. The alluvial fan is dominated by debris-flow, run-off and rock fall processes and permafrost occurs in several parts in the vicinity of anomalous geothermal heat flux. The aim is to assess the ways volcanic activity controls permafrost development and associated geomorphic dynamics using shallow subsurface, surface and air temperature measurements as well as thaw depth and electrical resistivity tomography (ERT) surveys.Results show a temperature increase with depth in the lower part of the fan reaching 13. °C at 0.80. m depth, without the presence of permafrost. The shallow borehole located at this site showed a stable thermal stratification all year-round, with only the upper 0.20. m reacting to meteorological forcing. In the upper part of the alluvial fan and debris cones, c. 100. m from the coast, frozen ground is present at c. 0.70. m depth. There, the shallow borehole shows a good coupling with air temperatures and the thermal regime favours the presence of permafrost. ERT shows the lowest resistivity values in the lower part of the alluvial fan and a highly resistivity zone in the upper sector of the fan and in the debris cones. These large variations in resistivity mark the presence of a saline water wedge from the sea into the fan, reaching frozen ground conditions about 100. m inland. It can be shown that the volcano-hydrothermal activity only inhibits frost development very locally, with frozen ground conditions occurring about 100. m away.
Fil: Goyanes, Gabriel Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Vieira, G.. Universidade de Lisboa; Portugal
Fil: Caselli, Alberto Tomás. Universidad Nacional de Río Negro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Cardoso, M.. Universidade de Lisboa; Portugal
Fil: Marmy, A.. University of Fribourg; Suiza
Fil: Santos, F.. Universidade de Lisboa; Portugal
Fil: Bernardo, I.. Universidade de Lisboa; Portugal
Fil: Hauck, C.. University Of Fribourg; Suiza
description This study aims at understanding the spatial distribution and characteristics of the frozen and unfrozen terrain in an alluvial fan on Deception Island, which is an active strato-volcano located in the Bransfield Strait (South Shetland Islands) with recent eruptions in 1967, 1969 and 1970. The alluvial fan is dominated by debris-flow, run-off and rock fall processes and permafrost occurs in several parts in the vicinity of anomalous geothermal heat flux. The aim is to assess the ways volcanic activity controls permafrost development and associated geomorphic dynamics using shallow subsurface, surface and air temperature measurements as well as thaw depth and electrical resistivity tomography (ERT) surveys.Results show a temperature increase with depth in the lower part of the fan reaching 13. °C at 0.80. m depth, without the presence of permafrost. The shallow borehole located at this site showed a stable thermal stratification all year-round, with only the upper 0.20. m reacting to meteorological forcing. In the upper part of the alluvial fan and debris cones, c. 100. m from the coast, frozen ground is present at c. 0.70. m depth. There, the shallow borehole shows a good coupling with air temperatures and the thermal regime favours the presence of permafrost. ERT shows the lowest resistivity values in the lower part of the alluvial fan and a highly resistivity zone in the upper sector of the fan and in the debris cones. These large variations in resistivity mark the presence of a saline water wedge from the sea into the fan, reaching frozen ground conditions about 100. m inland. It can be shown that the volcano-hydrothermal activity only inhibits frost development very locally, with frozen ground conditions occurring about 100. m away.
publishDate 2014
dc.date.none.fl_str_mv 2014-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/84826
Goyanes, Gabriel Alejandro; Vieira, G.; Caselli, Alberto Tomás; Cardoso, M.; Marmy, A.; et al.; Local influences of geothermal anomalies on permafrost distribution in an active volcanic island (Deception Island, Antarctica); Elsevier Science; Geomorphology; 225; 4-2014; 57-68
0169-555X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/84826
identifier_str_mv Goyanes, Gabriel Alejandro; Vieira, G.; Caselli, Alberto Tomás; Cardoso, M.; Marmy, A.; et al.; Local influences of geothermal anomalies on permafrost distribution in an active volcanic island (Deception Island, Antarctica); Elsevier Science; Geomorphology; 225; 4-2014; 57-68
0169-555X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.geomorph.2014.04.010
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0169555X14001950
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.260194

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