Arctic coastal erosion: UAV-SfM data collection strategies for planimetric and volumetric measurements
Above average warming in the Arctic is leading to increasing permafrost temperatures and a reduction in sea ice cover, which are expected to contribute to increasing rates of Arctic coastal erosion and sediment release. We studied a 1.5 km stretch of coastline off Richard’s Island, Northwest Territo...
Published in: | Arctic Science |
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Canadian Science Publishing
2021
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Online Access: | https://doi.org/10.1139/as-2020-0021 https://doaj.org/article/3466c778aed84e2ca69f9abe77489a0f |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:3466c778aed84e2ca69f9abe77489a0f 2023-05-15T14:22:23+02:00 Arctic coastal erosion: UAV-SfM data collection strategies for planimetric and volumetric measurements Andrew Clark Brian Moorman Dustin Whalen Paul Fraser 2021-09-01 https://doi.org/10.1139/as-2020-0021 https://doaj.org/article/3466c778aed84e2ca69f9abe77489a0f en fr eng fre Canadian Science Publishing doi:10.1139/as-2020-0021 2368-7460 https://doaj.org/article/3466c778aed84e2ca69f9abe77489a0f undefined Arctic Science, Vol 7, Iss 3, Pp 605-633 (2021) uav-sfm arctic coastal erosion oblique imagery coastal retrogressive thaw slump volumetric coastal erosion geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2021 fttriple https://doi.org/10.1139/as-2020-0021 2023-01-22T18:10:38Z Above average warming in the Arctic is leading to increasing permafrost temperatures and a reduction in sea ice cover, which are expected to contribute to increasing rates of Arctic coastal erosion and sediment release. We studied a 1.5 km stretch of coastline off Richard’s Island, Northwest Territories, Canada, consisting of multiple retrogressive thaw slumps (RTSs) with varying degrees of activity over a one-year period. Multi-temporal 2D and 3D geomorphic analysis was based on unmanned aerial vehicle-Structure-from-Motion (UAV-SfM) data sets collected in 2018 and 2019. Over the observation period, −3.9 m and −1.1 m of planimetric cliff edge and toe retreat occurred, respectively, and corresponded to an average volumetric change of 8.1 m3 m−1. The accuracy of UAV-SfM-derived digital elevation models was tested using 12 data collection and processing scenarios, testing the influence of off-nadir camera angle, flight pattern, and georeferencing strategy. We found that oblique imaging and georeferencing strategy had a large influence on vertical accuracy and variability across the study site and has implications for studying volumetric changes in RTSs. This study furthers the geomorphological understanding of RTS processes by highlighting the complex relationship between planimetric and volumetric change along rapidly retreating Arctic coasts, and demonstrates advancements in measurement practices for UAV-SfM data sets. Article in Journal/Newspaper Arctic Arctic Ice Northwest Territories permafrost Sea ice Unknown Arctic Canada Northwest Territories Arctic Science 7 3 605 633 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English French |
topic |
uav-sfm arctic coastal erosion oblique imagery coastal retrogressive thaw slump volumetric coastal erosion geo envir |
spellingShingle |
uav-sfm arctic coastal erosion oblique imagery coastal retrogressive thaw slump volumetric coastal erosion geo envir Andrew Clark Brian Moorman Dustin Whalen Paul Fraser Arctic coastal erosion: UAV-SfM data collection strategies for planimetric and volumetric measurements |
topic_facet |
uav-sfm arctic coastal erosion oblique imagery coastal retrogressive thaw slump volumetric coastal erosion geo envir |
description |
Above average warming in the Arctic is leading to increasing permafrost temperatures and a reduction in sea ice cover, which are expected to contribute to increasing rates of Arctic coastal erosion and sediment release. We studied a 1.5 km stretch of coastline off Richard’s Island, Northwest Territories, Canada, consisting of multiple retrogressive thaw slumps (RTSs) with varying degrees of activity over a one-year period. Multi-temporal 2D and 3D geomorphic analysis was based on unmanned aerial vehicle-Structure-from-Motion (UAV-SfM) data sets collected in 2018 and 2019. Over the observation period, −3.9 m and −1.1 m of planimetric cliff edge and toe retreat occurred, respectively, and corresponded to an average volumetric change of 8.1 m3 m−1. The accuracy of UAV-SfM-derived digital elevation models was tested using 12 data collection and processing scenarios, testing the influence of off-nadir camera angle, flight pattern, and georeferencing strategy. We found that oblique imaging and georeferencing strategy had a large influence on vertical accuracy and variability across the study site and has implications for studying volumetric changes in RTSs. This study furthers the geomorphological understanding of RTS processes by highlighting the complex relationship between planimetric and volumetric change along rapidly retreating Arctic coasts, and demonstrates advancements in measurement practices for UAV-SfM data sets. |
format |
Article in Journal/Newspaper |
author |
Andrew Clark Brian Moorman Dustin Whalen Paul Fraser |
author_facet |
Andrew Clark Brian Moorman Dustin Whalen Paul Fraser |
author_sort |
Andrew Clark |
title |
Arctic coastal erosion: UAV-SfM data collection strategies for planimetric and volumetric measurements |
title_short |
Arctic coastal erosion: UAV-SfM data collection strategies for planimetric and volumetric measurements |
title_full |
Arctic coastal erosion: UAV-SfM data collection strategies for planimetric and volumetric measurements |
title_fullStr |
Arctic coastal erosion: UAV-SfM data collection strategies for planimetric and volumetric measurements |
title_full_unstemmed |
Arctic coastal erosion: UAV-SfM data collection strategies for planimetric and volumetric measurements |
title_sort |
arctic coastal erosion: uav-sfm data collection strategies for planimetric and volumetric measurements |
publisher |
Canadian Science Publishing |
publishDate |
2021 |
url |
https://doi.org/10.1139/as-2020-0021 https://doaj.org/article/3466c778aed84e2ca69f9abe77489a0f |
geographic |
Arctic Canada Northwest Territories |
geographic_facet |
Arctic Canada Northwest Territories |
genre |
Arctic Arctic Ice Northwest Territories permafrost Sea ice |
genre_facet |
Arctic Arctic Ice Northwest Territories permafrost Sea ice |
op_source |
Arctic Science, Vol 7, Iss 3, Pp 605-633 (2021) |
op_relation |
doi:10.1139/as-2020-0021 2368-7460 https://doaj.org/article/3466c778aed84e2ca69f9abe77489a0f |
op_rights |
undefined |
op_doi |
https://doi.org/10.1139/as-2020-0021 |
container_title |
Arctic Science |
container_volume |
7 |
container_issue |
3 |
container_start_page |
605 |
op_container_end_page |
633 |
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1766294989495599104 |