Permafrost thermal regime from two 30‐m deep boreholes in southern victoria land, antarctica
ABSTRACT Two 30‐m deep permafrost temperature‐monitoring boreholes were installed in bedrock, one at Marble Point and one in the Wright Valley, in the Ross Sea region of Antarctica. A soil climate‐monitoring station in till is located near each borehole. The ground surface temperature (GST) was high...
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crwiley:10.1002/ppp.715 2024-09-30T14:26:14+00:00 Permafrost thermal regime from two 30‐m deep boreholes in southern victoria land, antarctica Guglielmin, Mauro Balks, Megan R. Adlam, Leah S. Baio, Fabio 2011 http://dx.doi.org/10.1002/ppp.715 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.715 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.715 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 22, issue 2, page 129-139 ISSN 1045-6740 1099-1530 journal-article 2011 crwiley https://doi.org/10.1002/ppp.715 2024-09-11T04:17:59Z ABSTRACT Two 30‐m deep permafrost temperature‐monitoring boreholes were installed in bedrock, one at Marble Point and one in the Wright Valley, in the Ross Sea region of Antarctica. A soil climate‐monitoring station in till is located near each borehole. The ground surface temperature (GST) was highly correlated with the air temperature at both sites in 2008. Thermal offsets were small (< 1 °C) in the till and negligible in the boreholes. The active layer was thicker in the boreholes than in the till, presumably because of the higher thermal diffusivity of the rock. The measured depth of zero annual temperature amplitude was around 27 m at Wright Valley and 25 m at Marble Point. Permafrost thickness was estimated at about 680 m at Wright Valley and 490 m at Marble Point. The GST history, reconstructed using an inversion procedure, suggests a slight cooling from 1998 to 2003 followed by a slight warming to 2008. Longer temperature records or deeper boreholes would be required to establish if long‐term climate change has occurred. Copyright © 2011 John Wiley & Sons, Ltd. Article in Journal/Newspaper Antarc* Antarctica permafrost Permafrost and Periglacial Processes Ross Sea Victoria Land Wiley Online Library Ross Sea Victoria Land Wright Valley ENVELOPE(161.833,161.833,-77.517,-77.517) Marble Point ENVELOPE(163.833,163.833,-77.433,-77.433) Permafrost and Periglacial Processes 22 2 129 139 |
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Open Polar |
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Wiley Online Library |
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crwiley |
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English |
description |
ABSTRACT Two 30‐m deep permafrost temperature‐monitoring boreholes were installed in bedrock, one at Marble Point and one in the Wright Valley, in the Ross Sea region of Antarctica. A soil climate‐monitoring station in till is located near each borehole. The ground surface temperature (GST) was highly correlated with the air temperature at both sites in 2008. Thermal offsets were small (< 1 °C) in the till and negligible in the boreholes. The active layer was thicker in the boreholes than in the till, presumably because of the higher thermal diffusivity of the rock. The measured depth of zero annual temperature amplitude was around 27 m at Wright Valley and 25 m at Marble Point. Permafrost thickness was estimated at about 680 m at Wright Valley and 490 m at Marble Point. The GST history, reconstructed using an inversion procedure, suggests a slight cooling from 1998 to 2003 followed by a slight warming to 2008. Longer temperature records or deeper boreholes would be required to establish if long‐term climate change has occurred. Copyright © 2011 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Guglielmin, Mauro Balks, Megan R. Adlam, Leah S. Baio, Fabio |
spellingShingle |
Guglielmin, Mauro Balks, Megan R. Adlam, Leah S. Baio, Fabio Permafrost thermal regime from two 30‐m deep boreholes in southern victoria land, antarctica |
author_facet |
Guglielmin, Mauro Balks, Megan R. Adlam, Leah S. Baio, Fabio |
author_sort |
Guglielmin, Mauro |
title |
Permafrost thermal regime from two 30‐m deep boreholes in southern victoria land, antarctica |
title_short |
Permafrost thermal regime from two 30‐m deep boreholes in southern victoria land, antarctica |
title_full |
Permafrost thermal regime from two 30‐m deep boreholes in southern victoria land, antarctica |
title_fullStr |
Permafrost thermal regime from two 30‐m deep boreholes in southern victoria land, antarctica |
title_full_unstemmed |
Permafrost thermal regime from two 30‐m deep boreholes in southern victoria land, antarctica |
title_sort |
permafrost thermal regime from two 30‐m deep boreholes in southern victoria land, antarctica |
publisher |
Wiley |
publishDate |
2011 |
url |
http://dx.doi.org/10.1002/ppp.715 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.715 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.715 |
long_lat |
ENVELOPE(161.833,161.833,-77.517,-77.517) ENVELOPE(163.833,163.833,-77.433,-77.433) |
geographic |
Ross Sea Victoria Land Wright Valley Marble Point |
geographic_facet |
Ross Sea Victoria Land Wright Valley Marble Point |
genre |
Antarc* Antarctica permafrost Permafrost and Periglacial Processes Ross Sea Victoria Land |
genre_facet |
Antarc* Antarctica permafrost Permafrost and Periglacial Processes Ross Sea Victoria Land |
op_source |
Permafrost and Periglacial Processes volume 22, issue 2, page 129-139 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.715 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
22 |
container_issue |
2 |
container_start_page |
129 |
op_container_end_page |
139 |
_version_ |
1811646660173889536 |