High Arctic channel incision modulated by climate change and the emergence of polygonal ground
Abstract Stream networks in Arctic and high-elevation regions underlain by frozen ground (i.e., permafrost) are expanding and developing in response to accelerating global warming, and intensifying summertime climate variability. The underlying processes governing landscape dissection in these envir...
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ftdoajarticles:oai:doaj.org/article:cb334d0909f347ba963d16ed2d02bf9f 2023-10-09T21:48:45+02:00 High Arctic channel incision modulated by climate change and the emergence of polygonal ground Shawn M. Chartrand A. Mark Jellinek Antero Kukko Anna Grau Galofre Gordon R. Osinski Shannon Hibbard 2023-09-01T00:00:00Z https://doi.org/10.1038/s41467-023-40795-9 https://doaj.org/article/cb334d0909f347ba963d16ed2d02bf9f EN eng Nature Portfolio https://doi.org/10.1038/s41467-023-40795-9 https://doaj.org/toc/2041-1723 doi:10.1038/s41467-023-40795-9 2041-1723 https://doaj.org/article/cb334d0909f347ba963d16ed2d02bf9f Nature Communications, Vol 14, Iss 1, Pp 1-12 (2023) Science Q article 2023 ftdoajarticles https://doi.org/10.1038/s41467-023-40795-9 2023-09-24T00:42:47Z Abstract Stream networks in Arctic and high-elevation regions underlain by frozen ground (i.e., permafrost) are expanding and developing in response to accelerating global warming, and intensifying summertime climate variability. The underlying processes governing landscape dissection in these environments are varied, complex and challenging to unravel due to air-temperature-regulated feedbacks and shifts to new erosional regimes as climate change progresses. Here we use multiple sources of environmental information and physical models to reconstruct and understand a 60-year history of landscape-scale channelization and evolution of the Muskox Valley, Axel Heiberg Island. A time series of air photographs indicates that freeze-thaw-related polygon fields can form rapidly, over decadal time scales. Supporting numerical simulations show that the presence of polygons can control how surface runoff is routed through the landscape, exerting a basic control on channelization, which is sensitive to the timing, duration and magnitude of hydrograph events, as well as seasonal air temperature trends. These results collectively highlight that the occurrence and dynamics of polygon fields modulate channel network establishment in permafrost-rich settings undergoing changes related to a warming climate. Article in Journal/Newspaper Arctic Axel Heiberg Island Climate change Global warming muskox permafrost Directory of Open Access Journals: DOAJ Articles Arctic Axel Heiberg Island ENVELOPE(-91.001,-91.001,79.752,79.752) Heiberg ENVELOPE(13.964,13.964,66.424,66.424) Nature Communications 14 1 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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language |
English |
topic |
Science Q |
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Science Q Shawn M. Chartrand A. Mark Jellinek Antero Kukko Anna Grau Galofre Gordon R. Osinski Shannon Hibbard High Arctic channel incision modulated by climate change and the emergence of polygonal ground |
topic_facet |
Science Q |
description |
Abstract Stream networks in Arctic and high-elevation regions underlain by frozen ground (i.e., permafrost) are expanding and developing in response to accelerating global warming, and intensifying summertime climate variability. The underlying processes governing landscape dissection in these environments are varied, complex and challenging to unravel due to air-temperature-regulated feedbacks and shifts to new erosional regimes as climate change progresses. Here we use multiple sources of environmental information and physical models to reconstruct and understand a 60-year history of landscape-scale channelization and evolution of the Muskox Valley, Axel Heiberg Island. A time series of air photographs indicates that freeze-thaw-related polygon fields can form rapidly, over decadal time scales. Supporting numerical simulations show that the presence of polygons can control how surface runoff is routed through the landscape, exerting a basic control on channelization, which is sensitive to the timing, duration and magnitude of hydrograph events, as well as seasonal air temperature trends. These results collectively highlight that the occurrence and dynamics of polygon fields modulate channel network establishment in permafrost-rich settings undergoing changes related to a warming climate. |
format |
Article in Journal/Newspaper |
author |
Shawn M. Chartrand A. Mark Jellinek Antero Kukko Anna Grau Galofre Gordon R. Osinski Shannon Hibbard |
author_facet |
Shawn M. Chartrand A. Mark Jellinek Antero Kukko Anna Grau Galofre Gordon R. Osinski Shannon Hibbard |
author_sort |
Shawn M. Chartrand |
title |
High Arctic channel incision modulated by climate change and the emergence of polygonal ground |
title_short |
High Arctic channel incision modulated by climate change and the emergence of polygonal ground |
title_full |
High Arctic channel incision modulated by climate change and the emergence of polygonal ground |
title_fullStr |
High Arctic channel incision modulated by climate change and the emergence of polygonal ground |
title_full_unstemmed |
High Arctic channel incision modulated by climate change and the emergence of polygonal ground |
title_sort |
high arctic channel incision modulated by climate change and the emergence of polygonal ground |
publisher |
Nature Portfolio |
publishDate |
2023 |
url |
https://doi.org/10.1038/s41467-023-40795-9 https://doaj.org/article/cb334d0909f347ba963d16ed2d02bf9f |
long_lat |
ENVELOPE(-91.001,-91.001,79.752,79.752) ENVELOPE(13.964,13.964,66.424,66.424) |
geographic |
Arctic Axel Heiberg Island Heiberg |
geographic_facet |
Arctic Axel Heiberg Island Heiberg |
genre |
Arctic Axel Heiberg Island Climate change Global warming muskox permafrost |
genre_facet |
Arctic Axel Heiberg Island Climate change Global warming muskox permafrost |
op_source |
Nature Communications, Vol 14, Iss 1, Pp 1-12 (2023) |
op_relation |
https://doi.org/10.1038/s41467-023-40795-9 https://doaj.org/toc/2041-1723 doi:10.1038/s41467-023-40795-9 2041-1723 https://doaj.org/article/cb334d0909f347ba963d16ed2d02bf9f |
op_doi |
https://doi.org/10.1038/s41467-023-40795-9 |
container_title |
Nature Communications |
container_volume |
14 |
container_issue |
1 |
_version_ |
1779311823305048064 |