Thaw Subsidence in Undisturbed Tundra Landscapes, Barrow, Alaska, 1962–2015
Abstract In some regions underlain by ice‐rich permafrost, a consistent, long‐term increase in ALT under changing climatic conditions is not supported by observations. The apparent lack of ALT may be attributed to soil consolidation from thawing of the uppermost ice‐rich permafrost and subsidence of...
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Online Access: | http://dx.doi.org/10.1002/ppp.1918 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1918 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1918 |
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crwiley:10.1002/ppp.1918 2024-09-15T17:58:12+00:00 Thaw Subsidence in Undisturbed Tundra Landscapes, Barrow, Alaska, 1962–2015 Streletskiy, Dmitry A. Shiklomanov, Nikolay I. Little, Jonathon D. Nelson, Frederick E. Brown, Jerry Nyland, Kelsey E. Klene, Anna E. US National Science Foundation (NSF) NSF and NASA under NSF Cooperative Agreement 2016 http://dx.doi.org/10.1002/ppp.1918 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1918 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1918 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 28, issue 3, page 566-572 ISSN 1045-6740 1099-1530 journal-article 2016 crwiley https://doi.org/10.1002/ppp.1918 2024-09-05T05:03:55Z Abstract In some regions underlain by ice‐rich permafrost, a consistent, long‐term increase in ALT under changing climatic conditions is not supported by observations. The apparent lack of ALT may be attributed to soil consolidation from thawing of the uppermost ice‐rich permafrost and subsidence of the ground surface. Four plots established in 1962 at Barrow, Alaska, were re‐instrumented in 2003 and surveyed annually using differential GPS technology, accompanied by active‐layer probing. Elevation change from 1962 to 2003 was within the interannual variability of the 2003–15 period, indicating net stability in the area. Over the 2003–15 period, however, all four plots experienced subsidence trends of 0.4–1.0 cm/year, resulting in a net elevation change of 8–15 cm. Warmer winters and increased snow depth during this period decreased the potential for frost heave. Warmer summers resulted in thaw penetration into the ice‐rich transient layer and ice wedges, leading to the net subsidence in recent years. Copyright © 2016 John Wiley & Sons, Ltd. Article in Journal/Newspaper Barrow Ice permafrost Permafrost and Periglacial Processes Tundra wedge* Alaska Wiley Online Library Permafrost and Periglacial Processes 28 3 566 572 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract In some regions underlain by ice‐rich permafrost, a consistent, long‐term increase in ALT under changing climatic conditions is not supported by observations. The apparent lack of ALT may be attributed to soil consolidation from thawing of the uppermost ice‐rich permafrost and subsidence of the ground surface. Four plots established in 1962 at Barrow, Alaska, were re‐instrumented in 2003 and surveyed annually using differential GPS technology, accompanied by active‐layer probing. Elevation change from 1962 to 2003 was within the interannual variability of the 2003–15 period, indicating net stability in the area. Over the 2003–15 period, however, all four plots experienced subsidence trends of 0.4–1.0 cm/year, resulting in a net elevation change of 8–15 cm. Warmer winters and increased snow depth during this period decreased the potential for frost heave. Warmer summers resulted in thaw penetration into the ice‐rich transient layer and ice wedges, leading to the net subsidence in recent years. Copyright © 2016 John Wiley & Sons, Ltd. |
author2 |
US National Science Foundation (NSF) NSF and NASA under NSF Cooperative Agreement |
format |
Article in Journal/Newspaper |
author |
Streletskiy, Dmitry A. Shiklomanov, Nikolay I. Little, Jonathon D. Nelson, Frederick E. Brown, Jerry Nyland, Kelsey E. Klene, Anna E. |
spellingShingle |
Streletskiy, Dmitry A. Shiklomanov, Nikolay I. Little, Jonathon D. Nelson, Frederick E. Brown, Jerry Nyland, Kelsey E. Klene, Anna E. Thaw Subsidence in Undisturbed Tundra Landscapes, Barrow, Alaska, 1962–2015 |
author_facet |
Streletskiy, Dmitry A. Shiklomanov, Nikolay I. Little, Jonathon D. Nelson, Frederick E. Brown, Jerry Nyland, Kelsey E. Klene, Anna E. |
author_sort |
Streletskiy, Dmitry A. |
title |
Thaw Subsidence in Undisturbed Tundra Landscapes, Barrow, Alaska, 1962–2015 |
title_short |
Thaw Subsidence in Undisturbed Tundra Landscapes, Barrow, Alaska, 1962–2015 |
title_full |
Thaw Subsidence in Undisturbed Tundra Landscapes, Barrow, Alaska, 1962–2015 |
title_fullStr |
Thaw Subsidence in Undisturbed Tundra Landscapes, Barrow, Alaska, 1962–2015 |
title_full_unstemmed |
Thaw Subsidence in Undisturbed Tundra Landscapes, Barrow, Alaska, 1962–2015 |
title_sort |
thaw subsidence in undisturbed tundra landscapes, barrow, alaska, 1962–2015 |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1002/ppp.1918 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1918 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1918 |
genre |
Barrow Ice permafrost Permafrost and Periglacial Processes Tundra wedge* Alaska |
genre_facet |
Barrow Ice permafrost Permafrost and Periglacial Processes Tundra wedge* Alaska |
op_source |
Permafrost and Periglacial Processes volume 28, issue 3, page 566-572 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.1918 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
28 |
container_issue |
3 |
container_start_page |
566 |
op_container_end_page |
572 |
_version_ |
1810434576447700992 |