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,...
Published in: | Cuadernos de Investigación Geográfica |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Universidad de La Rioja
2017
|
Subjects: | |
Online Access: | http://hdl.handle.net/10451/28154 https://doi.org/10.18172/cig.2915 |
id |
ftunivlisboa:oai:repositorio.ul.pt:10451/28154 |
---|---|
record_format |
openpolar |
spelling |
ftunivlisboa:oai:repositorio.ul.pt:10451/28154 2023-05-15T13:03:18+02:00 Active layer thermal regime in two climatically contrasted sites of the Antarctic Peninsula region Hrbáček, F. Oliva, M. Laska, K. Ruiz-Fernández, J. De Pablo, M. A. Vieira, Goncalo Ramos, M. Nývlt, D. 2017-06-23T11:06:58Z http://hdl.handle.net/10451/28154 https://doi.org/10.18172/cig.2915 eng eng Universidad de La Rioja Hrbáček, F., Oliva, M., Laska, K., Ruiz-Fernández, J., de Pablo, M., Vieira, G., Ramos, M., & Nývlt, D. (2016). Active layer thermal regime in two climatically contrasted sites of the Antarctic Peninsula region. Cuadernos de Investigación Geográfica, 42(2), 457-474. doi:http://dx.doi.org/10.18172/cig.2915 0211-6820 http://hdl.handle.net/10451/28154 doi:10.18172/cig.2915 openAccess Antarctic Peninsula James Ross Island Livingston Island active layer air and ground temperatures article 2017 ftunivlisboa https://doi.org/10.18172/cig.2915 2022-05-25T18:36:49Z 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. info:eu-repo/semantics/publishedVersion Article in Journal/Newspaper Active layer thickness Antarc* Antarctic Antarctic Peninsula Ice James Ross Island Livingston Island permafrost Ross Island Universidade de Lisboa: repositório.UL 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 |
institution |
Open Polar |
collection |
Universidade de Lisboa: repositório.UL |
op_collection_id |
ftunivlisboa |
language |
English |
topic |
Antarctic Peninsula James Ross Island Livingston Island active layer air and ground temperatures |
spellingShingle |
Antarctic Peninsula James Ross Island Livingston Island active layer air and ground temperatures Hrbáček, F. Oliva, M. Laska, K. Ruiz-Fernández, J. De Pablo, M. A. Vieira, Goncalo Ramos, M. Nývlt, D. 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 |
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. info:eu-repo/semantics/publishedVersion |
format |
Article in Journal/Newspaper |
author |
Hrbáček, F. Oliva, M. Laska, K. Ruiz-Fernández, J. De Pablo, M. A. Vieira, Goncalo Ramos, M. Nývlt, D. |
author_facet |
Hrbáček, F. Oliva, M. Laska, K. Ruiz-Fernández, J. De Pablo, M. A. Vieira, Goncalo Ramos, M. Nývlt, D. |
author_sort |
Hrbáček, F. |
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 |
2017 |
url |
http://hdl.handle.net/10451/28154 https://doi.org/10.18172/cig.2915 |
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_relation |
Hrbáček, F., Oliva, M., Laska, K., Ruiz-Fernández, J., de Pablo, M., Vieira, G., Ramos, M., & Nývlt, D. (2016). Active layer thermal regime in two climatically contrasted sites of the Antarctic Peninsula region. Cuadernos de Investigación Geográfica, 42(2), 457-474. doi:http://dx.doi.org/10.18172/cig.2915 0211-6820 http://hdl.handle.net/10451/28154 doi:10.18172/cig.2915 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.18172/cig.2915 |
container_title |
Cuadernos de Investigación Geográfica |
container_volume |
42 |
container_issue |
2 |
container_start_page |
457 |
_version_ |
1766333448527544320 |