Supervised classification of landforms in Arctic mountains
Abstract Erosional and sediment fluxes from Arctic mountains are lower than for temperate mountain ranges due to the influence of permafrost on geomorphic processes. As permafrost extent declines in Arctic mountains, the spatial distribution of geomorphic processes and rates will change. Improved ac...
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crwiley:10.1002/ppp.2015 2024-06-02T07:54:20+00:00 Supervised classification of landforms in Arctic mountains Mithan, Huw Thomas Hales, Tristram Charles Cleall, Peter John British Society for Geomorphology 2019 http://dx.doi.org/10.1002/ppp.2015 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.2015 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2015 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2015 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Permafrost and Periglacial Processes volume 30, issue 3, page 131-145 ISSN 1045-6740 1099-1530 journal-article 2019 crwiley https://doi.org/10.1002/ppp.2015 2024-05-03T12:06:25Z Abstract Erosional and sediment fluxes from Arctic mountains are lower than for temperate mountain ranges due to the influence of permafrost on geomorphic processes. As permafrost extent declines in Arctic mountains, the spatial distribution of geomorphic processes and rates will change. Improved access to high‐quality remotely sensed topographic data in the Arctic provides an opportunity to develop our understanding of the spatial distribution of Arctic geomorphological processes and landforms. Utilizing newly available Arctic digital topography data, we have developed a method for geomorphic mapping using a pixel‐based linear discriminant analysis method that could be applied across Arctic mountains. We trained our classifier using landforms within the Adventdalen catchment in Svalbard and applied it to two adjacent catchments and one in Alaska. Slope gradient, elevation–relief ratio and landscape roughness distinguish landforms to a first order with >80% accuracy. Our simple classification system has a similar overall accuracy when compared across our field sites. The simplicity and robustness of our classification suggest that it is possible to use it to understand the distribution of Arctic mountain landforms using extant digital topography data and without specialized classifications. Our preliminary assessments of the distribution of geomorphic processes within these catchments demonstrate the importance of post‐glacial hillslope processes in governing sediment movement in Arctic mountains. Article in Journal/Newspaper Adventdalen Arctic permafrost Permafrost and Periglacial Processes Svalbard Alaska Wiley Online Library Adventdalen ENVELOPE(16.264,16.264,78.181,78.181) Arctic Svalbard Permafrost and Periglacial Processes |
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Open Polar |
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Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract Erosional and sediment fluxes from Arctic mountains are lower than for temperate mountain ranges due to the influence of permafrost on geomorphic processes. As permafrost extent declines in Arctic mountains, the spatial distribution of geomorphic processes and rates will change. Improved access to high‐quality remotely sensed topographic data in the Arctic provides an opportunity to develop our understanding of the spatial distribution of Arctic geomorphological processes and landforms. Utilizing newly available Arctic digital topography data, we have developed a method for geomorphic mapping using a pixel‐based linear discriminant analysis method that could be applied across Arctic mountains. We trained our classifier using landforms within the Adventdalen catchment in Svalbard and applied it to two adjacent catchments and one in Alaska. Slope gradient, elevation–relief ratio and landscape roughness distinguish landforms to a first order with >80% accuracy. Our simple classification system has a similar overall accuracy when compared across our field sites. The simplicity and robustness of our classification suggest that it is possible to use it to understand the distribution of Arctic mountain landforms using extant digital topography data and without specialized classifications. Our preliminary assessments of the distribution of geomorphic processes within these catchments demonstrate the importance of post‐glacial hillslope processes in governing sediment movement in Arctic mountains. |
author2 |
British Society for Geomorphology |
format |
Article in Journal/Newspaper |
author |
Mithan, Huw Thomas Hales, Tristram Charles Cleall, Peter John |
spellingShingle |
Mithan, Huw Thomas Hales, Tristram Charles Cleall, Peter John Supervised classification of landforms in Arctic mountains |
author_facet |
Mithan, Huw Thomas Hales, Tristram Charles Cleall, Peter John |
author_sort |
Mithan, Huw Thomas |
title |
Supervised classification of landforms in Arctic mountains |
title_short |
Supervised classification of landforms in Arctic mountains |
title_full |
Supervised classification of landforms in Arctic mountains |
title_fullStr |
Supervised classification of landforms in Arctic mountains |
title_full_unstemmed |
Supervised classification of landforms in Arctic mountains |
title_sort |
supervised classification of landforms in arctic mountains |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1002/ppp.2015 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.2015 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2015 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2015 |
long_lat |
ENVELOPE(16.264,16.264,78.181,78.181) |
geographic |
Adventdalen Arctic Svalbard |
geographic_facet |
Adventdalen Arctic Svalbard |
genre |
Adventdalen Arctic permafrost Permafrost and Periglacial Processes Svalbard Alaska |
genre_facet |
Adventdalen Arctic permafrost Permafrost and Periglacial Processes Svalbard Alaska |
op_source |
Permafrost and Periglacial Processes volume 30, issue 3, page 131-145 ISSN 1045-6740 1099-1530 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ppp.2015 |
container_title |
Permafrost and Periglacial Processes |
_version_ |
1800753366554378240 |