Active layer thermal regime in two climatically contrasted sites of the Antarctic Peninsula region
Permafrost controls geomorphic processes in ice-free areas of the Antarctic Peninsula (AP) region. Future climate trends will promote significant changes of the active layer regime and permafrost distribution, and therefore a better characterization of present-day state is needed. With this purpose,...
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Universidad de La Rioja
2016
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fttriple:oai:gotriple.eu:oai:doaj.org/article:f1d7bc471d064e02806242775ae192dc 2023-05-15T13:03:18+02:00 Active layer thermal regime in two climatically contrasted sites of the Antarctic Peninsula region F. Hrbáček M. Oliva K. Laska J. Ruiz-Fernández M. A. de Pablo G. Vieira M. Ramos D. Nývlt 2016-09-01 https://doi.org/10.18172/cig.2915 https://doaj.org/article/f1d7bc471d064e02806242775ae192dc en es eng spa Universidad de La Rioja 0211-6820 1697-9540 doi:10.18172/cig.2915 https://doaj.org/article/f1d7bc471d064e02806242775ae192dc undefined Cuadernos de Investigación Geográfica, Vol 42, Iss 2, Pp 457-474 (2016) antarctic peninsula james ross island livingston island active layer air and ground temperatures geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2016 fttriple https://doi.org/10.18172/cig.2915 2023-01-22T17:58:09Z Permafrost controls geomorphic processes in ice-free areas of the Antarctic Peninsula (AP) region. Future climate trends will promote significant changes of the active layer regime and permafrost distribution, and therefore a better characterization of present-day state is needed. With this purpose, this research focuses on Ulu Peninsula (James Ross Island) and Byers Peninsula (Livingston Island), located in the area of continuous and discontinuous permafrost in the eastern and western sides of the AP, respectively. Air and ground temperatures in as low as 80 cm below surface of the ground were monitored between January and December 2014. There is a high correlation between air temperatures on both sites (r=0.74). The mean annual temperature in Ulu Peninsula was -7.9 ºC, while in Byers Peninsula was -2.6 ºC. The lower air temperatures in Ulu Peninsula are also reflected in ground temperatures, which were between 4.9 (5 cm) and 5.9 ºC (75/80 cm) lower. The maximum active layer thickness observed during the study period was 52 cm in Ulu Peninsula and 85 cm in Byers Peninsula. Besides climate, soil characteristics, topography and snow cover are the main factors controlling the ground thermal regime in both areas. Article in Journal/Newspaper Active layer thickness Antarc* Antarctic Antarctic Peninsula Ice James Ross Island Livingston Island permafrost Ross Island Unknown Antarctic Antarctic Peninsula Byers ENVELOPE(-60.283,-60.283,-63.900,-63.900) Byers peninsula ENVELOPE(-61.066,-61.066,-62.633,-62.633) Livingston Island ENVELOPE(-60.500,-60.500,-62.600,-62.600) Ross Island The Antarctic Ulu Peninsula ENVELOPE(-57.963,-57.963,-63.918,-63.918) Cuadernos de Investigación Geográfica 42 2 457 474 |
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Open Polar |
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Unknown |
op_collection_id |
fttriple |
language |
English Spanish |
topic |
antarctic peninsula james ross island livingston island active layer air and ground temperatures geo envir |
spellingShingle |
antarctic peninsula james ross island livingston island active layer air and ground temperatures geo envir F. Hrbáček M. Oliva K. Laska J. Ruiz-Fernández M. A. de Pablo G. Vieira M. Ramos D. Nývlt Active layer thermal regime in two climatically contrasted sites of the Antarctic Peninsula region |
topic_facet |
antarctic peninsula james ross island livingston island active layer air and ground temperatures geo envir |
description |
Permafrost controls geomorphic processes in ice-free areas of the Antarctic Peninsula (AP) region. Future climate trends will promote significant changes of the active layer regime and permafrost distribution, and therefore a better characterization of present-day state is needed. With this purpose, this research focuses on Ulu Peninsula (James Ross Island) and Byers Peninsula (Livingston Island), located in the area of continuous and discontinuous permafrost in the eastern and western sides of the AP, respectively. Air and ground temperatures in as low as 80 cm below surface of the ground were monitored between January and December 2014. There is a high correlation between air temperatures on both sites (r=0.74). The mean annual temperature in Ulu Peninsula was -7.9 ºC, while in Byers Peninsula was -2.6 ºC. The lower air temperatures in Ulu Peninsula are also reflected in ground temperatures, which were between 4.9 (5 cm) and 5.9 ºC (75/80 cm) lower. The maximum active layer thickness observed during the study period was 52 cm in Ulu Peninsula and 85 cm in Byers Peninsula. Besides climate, soil characteristics, topography and snow cover are the main factors controlling the ground thermal regime in both areas. |
format |
Article in Journal/Newspaper |
author |
F. Hrbáček M. Oliva K. Laska J. Ruiz-Fernández M. A. de Pablo G. Vieira M. Ramos D. Nývlt |
author_facet |
F. Hrbáček M. Oliva K. Laska J. Ruiz-Fernández M. A. de Pablo G. Vieira M. Ramos D. Nývlt |
author_sort |
F. Hrbáček |
title |
Active layer thermal regime in two climatically contrasted sites of the Antarctic Peninsula region |
title_short |
Active layer thermal regime in two climatically contrasted sites of the Antarctic Peninsula region |
title_full |
Active layer thermal regime in two climatically contrasted sites of the Antarctic Peninsula region |
title_fullStr |
Active layer thermal regime in two climatically contrasted sites of the Antarctic Peninsula region |
title_full_unstemmed |
Active layer thermal regime in two climatically contrasted sites of the Antarctic Peninsula region |
title_sort |
active layer thermal regime in two climatically contrasted sites of the antarctic peninsula region |
publisher |
Universidad de La Rioja |
publishDate |
2016 |
url |
https://doi.org/10.18172/cig.2915 https://doaj.org/article/f1d7bc471d064e02806242775ae192dc |
long_lat |
ENVELOPE(-60.283,-60.283,-63.900,-63.900) ENVELOPE(-61.066,-61.066,-62.633,-62.633) ENVELOPE(-60.500,-60.500,-62.600,-62.600) ENVELOPE(-57.963,-57.963,-63.918,-63.918) |
geographic |
Antarctic Antarctic Peninsula Byers Byers peninsula Livingston Island Ross Island The Antarctic Ulu Peninsula |
geographic_facet |
Antarctic Antarctic Peninsula Byers Byers peninsula Livingston Island Ross Island The Antarctic Ulu Peninsula |
genre |
Active layer thickness Antarc* Antarctic Antarctic Peninsula Ice James Ross Island Livingston Island permafrost Ross Island |
genre_facet |
Active layer thickness Antarc* Antarctic Antarctic Peninsula Ice James Ross Island Livingston Island permafrost Ross Island |
op_source |
Cuadernos de Investigación Geográfica, Vol 42, Iss 2, Pp 457-474 (2016) |
op_relation |
0211-6820 1697-9540 doi:10.18172/cig.2915 https://doaj.org/article/f1d7bc471d064e02806242775ae192dc |
op_rights |
undefined |
op_doi |
https://doi.org/10.18172/cig.2915 |
container_title |
Cuadernos de Investigación Geográfica |
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42 |
container_issue |
2 |
container_start_page |
457 |
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474 |
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1766333505651867648 |