Effect of Climate on Morphology and Development of Sorted Circles and Polygons
Abstract Sorted circles and polygons are widespread features of periglacial landscapes, but the controls on their development remain poorly understood, impeding their use as palaeoenvironmental indicators. We investigate the relationship of sorted circles and polygons to altitude in the northern Bil...
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crwiley:10.1002/ppp.1949 2024-09-30T14:31:10+00:00 Effect of Climate on Morphology and Development of Sorted Circles and Polygons Uxa, Tomáš Mida, Peter Křížek, Marek Grantová Agentura, Univerzita Karlova Univerzita Karlova v Praze 2017 http://dx.doi.org/10.1002/ppp.1949 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1949 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1949 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 28, issue 4, page 663-674 ISSN 1045-6740 1099-1530 journal-article 2017 crwiley https://doi.org/10.1002/ppp.1949 2024-09-11T04:15:46Z Abstract Sorted circles and polygons are widespread features of periglacial landscapes, but the controls on their development remain poorly understood, impeding their use as palaeoenvironmental indicators. We investigate the relationship of sorted circles and polygons to altitude in the northern Billefjorden area, central Svalbard. The patterns occur in two distinct elevation zones, below 200–250 m asl and above 600 m asl. The higher‐elevated patterns have smaller diameters and shallower sorting depths due to a thinner active layer at higher elevations, suggesting that sorted patterns can indicate climate conditions and ground thermal state when the patterns initiated. Geology is believed to be of less importance for pattern morphology in the study area, causing only its fine‐scale variations. The pattern diameter‐to‐sorting depth ratios have a median value of 3.57, consistent with previous studies and theoretical models of patterned‐ground formation involving circulation mechanisms. Large‐scale sorted patterns may develop over centennial timescales in this high‐Arctic environment. They are probably not in equilibrium with present‐day climate conditions and have probably formed throughout the Holocene. Copyright © 2017 John Wiley & Sons, Ltd. Article in Journal/Newspaper Arctic Billefjorden Permafrost and Periglacial Processes Svalbard Wiley Online Library Arctic Svalbard Billefjorden ENVELOPE(16.417,16.417,78.563,78.563) Permafrost and Periglacial Processes 28 4 663 674 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Sorted circles and polygons are widespread features of periglacial landscapes, but the controls on their development remain poorly understood, impeding their use as palaeoenvironmental indicators. We investigate the relationship of sorted circles and polygons to altitude in the northern Billefjorden area, central Svalbard. The patterns occur in two distinct elevation zones, below 200–250 m asl and above 600 m asl. The higher‐elevated patterns have smaller diameters and shallower sorting depths due to a thinner active layer at higher elevations, suggesting that sorted patterns can indicate climate conditions and ground thermal state when the patterns initiated. Geology is believed to be of less importance for pattern morphology in the study area, causing only its fine‐scale variations. The pattern diameter‐to‐sorting depth ratios have a median value of 3.57, consistent with previous studies and theoretical models of patterned‐ground formation involving circulation mechanisms. Large‐scale sorted patterns may develop over centennial timescales in this high‐Arctic environment. They are probably not in equilibrium with present‐day climate conditions and have probably formed throughout the Holocene. Copyright © 2017 John Wiley & Sons, Ltd. |
author2 |
Grantová Agentura, Univerzita Karlova Univerzita Karlova v Praze |
format |
Article in Journal/Newspaper |
author |
Uxa, Tomáš Mida, Peter Křížek, Marek |
spellingShingle |
Uxa, Tomáš Mida, Peter Křížek, Marek Effect of Climate on Morphology and Development of Sorted Circles and Polygons |
author_facet |
Uxa, Tomáš Mida, Peter Křížek, Marek |
author_sort |
Uxa, Tomáš |
title |
Effect of Climate on Morphology and Development of Sorted Circles and Polygons |
title_short |
Effect of Climate on Morphology and Development of Sorted Circles and Polygons |
title_full |
Effect of Climate on Morphology and Development of Sorted Circles and Polygons |
title_fullStr |
Effect of Climate on Morphology and Development of Sorted Circles and Polygons |
title_full_unstemmed |
Effect of Climate on Morphology and Development of Sorted Circles and Polygons |
title_sort |
effect of climate on morphology and development of sorted circles and polygons |
publisher |
Wiley |
publishDate |
2017 |
url |
http://dx.doi.org/10.1002/ppp.1949 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1949 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1949 |
long_lat |
ENVELOPE(16.417,16.417,78.563,78.563) |
geographic |
Arctic Svalbard Billefjorden |
geographic_facet |
Arctic Svalbard Billefjorden |
genre |
Arctic Billefjorden Permafrost and Periglacial Processes Svalbard |
genre_facet |
Arctic Billefjorden Permafrost and Periglacial Processes Svalbard |
op_source |
Permafrost and Periglacial Processes volume 28, issue 4, page 663-674 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.1949 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
28 |
container_issue |
4 |
container_start_page |
663 |
op_container_end_page |
674 |
_version_ |
1811635821321650176 |