Recent shallowing of the thaw depth at Crater Lake, Deception Island, Antarctica (2006–2014)
- Autores
- Ramos, M.; Vieira, G.; de Pablo, M. A.; Molina, A.; Abramov, A.; Goyanes, Gabriel Alejandro
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The Western Antarctic Peninsula region is one of the hot spots of climate change and one of the most ecologically sensitive regions of Antarctica, where permafrost is near its climatic limits. The research was conducted in Deception Island, an active stratovolcano in the South Shetlands archipelago off the northern tip of the Antarctic Peninsula. The climate is polar oceanic, with high precipitation and mean annual air temperatures (MAAT) close to − 3 �C. The soils are composed by ashes and pyroclasts with high porosity and high water content, with ice-rich permafrost at − 0.8 �C at the depth of zero annual amplitude, with an active layer of about 30 cm. Results from thaw depth, ground temperature and snow cover monitoring at the Crater Lake CALM-S site over the period 2006 to 2014 are analyzed. Thaw depth (TD) was measured by mechanical probing once per year in the end of January or early February in a 100 � 100 m with a 10 m spacing grid. The results show a trend for decreasing thaw depth from ci. 36 cm in 2006 to 23 cm in 2014, while MAAT, as well as ground temperatures at the base of the active layer, remained stable. However, the duration of the snow cover at the CALM-S site, measured through the Snow Pack Factor (SF) showed an increase from 2006 to 2014, especially with longer lasting snow cover in the spring and early summer. The negative correlation between SF and the thaw depth supports the significance of the influence of the increasing snow cover in thaw depth, even with no trend in the MAAT. The lack of observed ground cooling in the base of the active layer is probably linked to the high ice/water content at the transient layer. The pyroclastic soils of Deception Island, with high porosity, are key to the shallow active layer depths, when compared to other sites in the Western Antarctic Peninsula (WAP). These findings support the lack of linearity between atmospheric warming and permafrost warming and induce an extra complexity to the understanding of the effects of climate change in the ice-free areas of the WAP, especially in scenarios with increased precipitation as snow fall.
Fil: Ramos, M.. Universidad de Alcalá; España
Fil: Vieira, G.. Universidade de Lisboa; Portugal
Fil: de Pablo, M. A.. Universidad de Alcalá; España
Fil: Molina, A.. Universidad de Alcalá; España
Fil: Abramov, A.. Russian Academy of Science; Rusia
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 - Materia
-
Active Layer
Antarctic Peninsula
Decreasing Thaw Depth
Permafrost
Snow Insulation - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/53075
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Recent shallowing of the thaw depth at Crater Lake, Deception Island, Antarctica (2006–2014)Ramos, M.Vieira, G.de Pablo, M. A.Molina, A.Abramov, A.Goyanes, Gabriel AlejandroActive LayerAntarctic PeninsulaDecreasing Thaw DepthPermafrostSnow Insulationhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Western Antarctic Peninsula region is one of the hot spots of climate change and one of the most ecologically sensitive regions of Antarctica, where permafrost is near its climatic limits. The research was conducted in Deception Island, an active stratovolcano in the South Shetlands archipelago off the northern tip of the Antarctic Peninsula. The climate is polar oceanic, with high precipitation and mean annual air temperatures (MAAT) close to − 3 �C. The soils are composed by ashes and pyroclasts with high porosity and high water content, with ice-rich permafrost at − 0.8 �C at the depth of zero annual amplitude, with an active layer of about 30 cm. Results from thaw depth, ground temperature and snow cover monitoring at the Crater Lake CALM-S site over the period 2006 to 2014 are analyzed. Thaw depth (TD) was measured by mechanical probing once per year in the end of January or early February in a 100 � 100 m with a 10 m spacing grid. The results show a trend for decreasing thaw depth from ci. 36 cm in 2006 to 23 cm in 2014, while MAAT, as well as ground temperatures at the base of the active layer, remained stable. However, the duration of the snow cover at the CALM-S site, measured through the Snow Pack Factor (SF) showed an increase from 2006 to 2014, especially with longer lasting snow cover in the spring and early summer. The negative correlation between SF and the thaw depth supports the significance of the influence of the increasing snow cover in thaw depth, even with no trend in the MAAT. The lack of observed ground cooling in the base of the active layer is probably linked to the high ice/water content at the transient layer. The pyroclastic soils of Deception Island, with high porosity, are key to the shallow active layer depths, when compared to other sites in the Western Antarctic Peninsula (WAP). These findings support the lack of linearity between atmospheric warming and permafrost warming and induce an extra complexity to the understanding of the effects of climate change in the ice-free areas of the WAP, especially in scenarios with increased precipitation as snow fall.Fil: Ramos, M.. Universidad de Alcalá; EspañaFil: Vieira, G.. Universidade de Lisboa; PortugalFil: de Pablo, M. A.. Universidad de Alcalá; EspañaFil: Molina, A.. Universidad de Alcalá; EspañaFil: Abramov, A.. Russian Academy of Science; RusiaFil: 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"; ArgentinaElsevier Science2017-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/53075Ramos, M.; Vieira, G.; de Pablo, M. A.; Molina, A.; Abramov, A.; et al.; Recent shallowing of the thaw depth at Crater Lake, Deception Island, Antarctica (2006–2014); Elsevier Science; Catena; 149; 2-2017; 519-5280341-8162CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.catena.2016.07.019info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0341816216302788info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:46:33Zoai:ri.conicet.gov.ar:11336/53075instacron: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 09:46:33.389CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Recent shallowing of the thaw depth at Crater Lake, Deception Island, Antarctica (2006–2014) |
title |
Recent shallowing of the thaw depth at Crater Lake, Deception Island, Antarctica (2006–2014) |
spellingShingle |
Recent shallowing of the thaw depth at Crater Lake, Deception Island, Antarctica (2006–2014) Ramos, M. Active Layer Antarctic Peninsula Decreasing Thaw Depth Permafrost Snow Insulation |
title_short |
Recent shallowing of the thaw depth at Crater Lake, Deception Island, Antarctica (2006–2014) |
title_full |
Recent shallowing of the thaw depth at Crater Lake, Deception Island, Antarctica (2006–2014) |
title_fullStr |
Recent shallowing of the thaw depth at Crater Lake, Deception Island, Antarctica (2006–2014) |
title_full_unstemmed |
Recent shallowing of the thaw depth at Crater Lake, Deception Island, Antarctica (2006–2014) |
title_sort |
Recent shallowing of the thaw depth at Crater Lake, Deception Island, Antarctica (2006–2014) |
dc.creator.none.fl_str_mv |
Ramos, M. Vieira, G. de Pablo, M. A. Molina, A. Abramov, A. Goyanes, Gabriel Alejandro |
author |
Ramos, M. |
author_facet |
Ramos, M. Vieira, G. de Pablo, M. A. Molina, A. Abramov, A. Goyanes, Gabriel Alejandro |
author_role |
author |
author2 |
Vieira, G. de Pablo, M. A. Molina, A. Abramov, A. Goyanes, Gabriel Alejandro |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
Active Layer Antarctic Peninsula Decreasing Thaw Depth Permafrost Snow Insulation |
topic |
Active Layer Antarctic Peninsula Decreasing Thaw Depth Permafrost Snow Insulation |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The Western Antarctic Peninsula region is one of the hot spots of climate change and one of the most ecologically sensitive regions of Antarctica, where permafrost is near its climatic limits. The research was conducted in Deception Island, an active stratovolcano in the South Shetlands archipelago off the northern tip of the Antarctic Peninsula. The climate is polar oceanic, with high precipitation and mean annual air temperatures (MAAT) close to − 3 �C. The soils are composed by ashes and pyroclasts with high porosity and high water content, with ice-rich permafrost at − 0.8 �C at the depth of zero annual amplitude, with an active layer of about 30 cm. Results from thaw depth, ground temperature and snow cover monitoring at the Crater Lake CALM-S site over the period 2006 to 2014 are analyzed. Thaw depth (TD) was measured by mechanical probing once per year in the end of January or early February in a 100 � 100 m with a 10 m spacing grid. The results show a trend for decreasing thaw depth from ci. 36 cm in 2006 to 23 cm in 2014, while MAAT, as well as ground temperatures at the base of the active layer, remained stable. However, the duration of the snow cover at the CALM-S site, measured through the Snow Pack Factor (SF) showed an increase from 2006 to 2014, especially with longer lasting snow cover in the spring and early summer. The negative correlation between SF and the thaw depth supports the significance of the influence of the increasing snow cover in thaw depth, even with no trend in the MAAT. The lack of observed ground cooling in the base of the active layer is probably linked to the high ice/water content at the transient layer. The pyroclastic soils of Deception Island, with high porosity, are key to the shallow active layer depths, when compared to other sites in the Western Antarctic Peninsula (WAP). These findings support the lack of linearity between atmospheric warming and permafrost warming and induce an extra complexity to the understanding of the effects of climate change in the ice-free areas of the WAP, especially in scenarios with increased precipitation as snow fall. Fil: Ramos, M.. Universidad de Alcalá; España Fil: Vieira, G.. Universidade de Lisboa; Portugal Fil: de Pablo, M. A.. Universidad de Alcalá; España Fil: Molina, A.. Universidad de Alcalá; España Fil: Abramov, A.. Russian Academy of Science; Rusia 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 |
description |
The Western Antarctic Peninsula region is one of the hot spots of climate change and one of the most ecologically sensitive regions of Antarctica, where permafrost is near its climatic limits. The research was conducted in Deception Island, an active stratovolcano in the South Shetlands archipelago off the northern tip of the Antarctic Peninsula. The climate is polar oceanic, with high precipitation and mean annual air temperatures (MAAT) close to − 3 �C. The soils are composed by ashes and pyroclasts with high porosity and high water content, with ice-rich permafrost at − 0.8 �C at the depth of zero annual amplitude, with an active layer of about 30 cm. Results from thaw depth, ground temperature and snow cover monitoring at the Crater Lake CALM-S site over the period 2006 to 2014 are analyzed. Thaw depth (TD) was measured by mechanical probing once per year in the end of January or early February in a 100 � 100 m with a 10 m spacing grid. The results show a trend for decreasing thaw depth from ci. 36 cm in 2006 to 23 cm in 2014, while MAAT, as well as ground temperatures at the base of the active layer, remained stable. However, the duration of the snow cover at the CALM-S site, measured through the Snow Pack Factor (SF) showed an increase from 2006 to 2014, especially with longer lasting snow cover in the spring and early summer. The negative correlation between SF and the thaw depth supports the significance of the influence of the increasing snow cover in thaw depth, even with no trend in the MAAT. The lack of observed ground cooling in the base of the active layer is probably linked to the high ice/water content at the transient layer. The pyroclastic soils of Deception Island, with high porosity, are key to the shallow active layer depths, when compared to other sites in the Western Antarctic Peninsula (WAP). These findings support the lack of linearity between atmospheric warming and permafrost warming and induce an extra complexity to the understanding of the effects of climate change in the ice-free areas of the WAP, especially in scenarios with increased precipitation as snow fall. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-02 |
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/11336/53075 Ramos, M.; Vieira, G.; de Pablo, M. A.; Molina, A.; Abramov, A.; et al.; Recent shallowing of the thaw depth at Crater Lake, Deception Island, Antarctica (2006–2014); Elsevier Science; Catena; 149; 2-2017; 519-528 0341-8162 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/53075 |
identifier_str_mv |
Ramos, M.; Vieira, G.; de Pablo, M. A.; Molina, A.; Abramov, A.; et al.; Recent shallowing of the thaw depth at Crater Lake, Deception Island, Antarctica (2006–2014); Elsevier Science; Catena; 149; 2-2017; 519-528 0341-8162 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.catena.2016.07.019 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0341816216302788 |
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 |
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 |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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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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1844613453780615168 |
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13.070432 |