Temporal stereophotogrammetric analysis of retrogressive thaw slumps on Herschel Island, Yukon Territory
International audience The western Canadian Arctic is identified as an area of potentially significant global warming. Thawing permafrost, sea level rise, changing sea ice conditions and increased wave activity will result in accelerated rates of coastal erosion and thermokarst activity in areas of...
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ftccsdartic:oai:HAL:hal-00299196v1 2023-05-15T14:58:08+02:00 Temporal stereophotogrammetric analysis of retrogressive thaw slumps on Herschel Island, Yukon Territory Lantuit, H. Pollard, W. H. Department of Geography Montréal McGill University = Université McGill Montréal, Canada 2005-05-30 https://hal.archives-ouvertes.fr/hal-00299196 https://hal.archives-ouvertes.fr/hal-00299196/document https://hal.archives-ouvertes.fr/hal-00299196/file/nhess-5-413-2005.pdf en eng HAL CCSD Copernicus Publ. / European Geosciences Union hal-00299196 https://hal.archives-ouvertes.fr/hal-00299196 https://hal.archives-ouvertes.fr/hal-00299196/document https://hal.archives-ouvertes.fr/hal-00299196/file/nhess-5-413-2005.pdf info:eu-repo/semantics/OpenAccess ISSN: 1561-8633 EISSN: 1684-9981 Natural Hazards and Earth System Sciences https://hal.archives-ouvertes.fr/hal-00299196 Natural Hazards and Earth System Sciences, Copernicus Publ. / European Geosciences Union, 2005, 5 (3), pp.413-423 [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2005 ftccsdartic 2021-08-21T23:04:27Z International audience The western Canadian Arctic is identified as an area of potentially significant global warming. Thawing permafrost, sea level rise, changing sea ice conditions and increased wave activity will result in accelerated rates of coastal erosion and thermokarst activity in areas of ice-rich permafrost. The Yukon Coastal Plain is widely recognized as one of the most ice-rich and thaw-sensitive areas in the Canadian Arctic. In particular, Herschel Island displays extensive coastal thermokarst. Retrogressive thaw slumps are a common thermokarst landform along the Herschel Island coast that have been increasing in both frequency and extent have in recent years due to increased thawing of massive ground ice and coastal erosion. The volume of sediment and ground ice eroded by retrogressive slump activity and the potential release of climate change related materials like organic carbon, carbon dioxide and methane are largely unknown. The remote setting of Herschel Island, and the Arctic in general, make direct observation of this type of erosion and the analysis of potential climate feedbacks extremely problematic. Remote sensing provides possibly the best solution to this problem. This study looks at two retrogressive thaw slumps located on the western shore of Herschel Island and using stereophotogrammetric methods attempts to (1) develop the first three-dimensional geomorphic analysis of this type of landform, and (2) provide an estimation of the volume of sediment/ground ice eroded through back wasting thermokarst activity. Digital Elevation Models were extracted for the years 1952, 1970 and 2004 and validated using data collected in the field using Kinematic Differential Global Positioning System. Estimates of sediment volumes eroded from retrogressive thaw slumps were found to vary greatly. In one case the total volume of material lost for the 1970?2004 period was approximately 1560000m 3 . The estimated volume of sediment alone was 360000m 3 . The temporal analysis of the DEMs suggest that ... Article in Journal/Newspaper Arctic Climate change Global warming Herschel Herschel Island Ice permafrost Sea ice Thermokarst Yukon Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Herschel Island ENVELOPE(-139.089,-139.089,69.583,69.583) Yukon |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Lantuit, H. Pollard, W. H. Temporal stereophotogrammetric analysis of retrogressive thaw slumps on Herschel Island, Yukon Territory |
topic_facet |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience The western Canadian Arctic is identified as an area of potentially significant global warming. Thawing permafrost, sea level rise, changing sea ice conditions and increased wave activity will result in accelerated rates of coastal erosion and thermokarst activity in areas of ice-rich permafrost. The Yukon Coastal Plain is widely recognized as one of the most ice-rich and thaw-sensitive areas in the Canadian Arctic. In particular, Herschel Island displays extensive coastal thermokarst. Retrogressive thaw slumps are a common thermokarst landform along the Herschel Island coast that have been increasing in both frequency and extent have in recent years due to increased thawing of massive ground ice and coastal erosion. The volume of sediment and ground ice eroded by retrogressive slump activity and the potential release of climate change related materials like organic carbon, carbon dioxide and methane are largely unknown. The remote setting of Herschel Island, and the Arctic in general, make direct observation of this type of erosion and the analysis of potential climate feedbacks extremely problematic. Remote sensing provides possibly the best solution to this problem. This study looks at two retrogressive thaw slumps located on the western shore of Herschel Island and using stereophotogrammetric methods attempts to (1) develop the first three-dimensional geomorphic analysis of this type of landform, and (2) provide an estimation of the volume of sediment/ground ice eroded through back wasting thermokarst activity. Digital Elevation Models were extracted for the years 1952, 1970 and 2004 and validated using data collected in the field using Kinematic Differential Global Positioning System. Estimates of sediment volumes eroded from retrogressive thaw slumps were found to vary greatly. In one case the total volume of material lost for the 1970?2004 period was approximately 1560000m 3 . The estimated volume of sediment alone was 360000m 3 . The temporal analysis of the DEMs suggest that ... |
author2 |
Department of Geography Montréal McGill University = Université McGill Montréal, Canada |
format |
Article in Journal/Newspaper |
author |
Lantuit, H. Pollard, W. H. |
author_facet |
Lantuit, H. Pollard, W. H. |
author_sort |
Lantuit, H. |
title |
Temporal stereophotogrammetric analysis of retrogressive thaw slumps on Herschel Island, Yukon Territory |
title_short |
Temporal stereophotogrammetric analysis of retrogressive thaw slumps on Herschel Island, Yukon Territory |
title_full |
Temporal stereophotogrammetric analysis of retrogressive thaw slumps on Herschel Island, Yukon Territory |
title_fullStr |
Temporal stereophotogrammetric analysis of retrogressive thaw slumps on Herschel Island, Yukon Territory |
title_full_unstemmed |
Temporal stereophotogrammetric analysis of retrogressive thaw slumps on Herschel Island, Yukon Territory |
title_sort |
temporal stereophotogrammetric analysis of retrogressive thaw slumps on herschel island, yukon territory |
publisher |
HAL CCSD |
publishDate |
2005 |
url |
https://hal.archives-ouvertes.fr/hal-00299196 https://hal.archives-ouvertes.fr/hal-00299196/document https://hal.archives-ouvertes.fr/hal-00299196/file/nhess-5-413-2005.pdf |
long_lat |
ENVELOPE(-139.089,-139.089,69.583,69.583) |
geographic |
Arctic Herschel Island Yukon |
geographic_facet |
Arctic Herschel Island Yukon |
genre |
Arctic Climate change Global warming Herschel Herschel Island Ice permafrost Sea ice Thermokarst Yukon |
genre_facet |
Arctic Climate change Global warming Herschel Herschel Island Ice permafrost Sea ice Thermokarst Yukon |
op_source |
ISSN: 1561-8633 EISSN: 1684-9981 Natural Hazards and Earth System Sciences https://hal.archives-ouvertes.fr/hal-00299196 Natural Hazards and Earth System Sciences, Copernicus Publ. / European Geosciences Union, 2005, 5 (3), pp.413-423 |
op_relation |
hal-00299196 https://hal.archives-ouvertes.fr/hal-00299196 https://hal.archives-ouvertes.fr/hal-00299196/document https://hal.archives-ouvertes.fr/hal-00299196/file/nhess-5-413-2005.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1766330224208773120 |