Geomorphology of Gullies at Thomas Lee Inlet, Devon Island, Canadian High Arctic
Slopes in and around Thomas Lee Inlet (Devon Island, Nunavut, Canada) are eroded by means of gullying, yet the driving factors, such as the nature of the substrate and availability of different sources for water, influencing gully morphology remain poorly understood. Here we investigate the factors...
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Online Access: | https://doi.org/10.1002/ppp.1992 |
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ftrepec:oai:RePEc:wly:perpro:v:30:y:2019:i:1:p:19-34 2023-05-15T15:07:44+02:00 Geomorphology of Gullies at Thomas Lee Inlet, Devon Island, Canadian High Arctic Etienne Godin Gordon R. Osinski Tanya N. Harrison Alexandra Pontefract Michael Zanetti https://doi.org/10.1002/ppp.1992 unknown https://doi.org/10.1002/ppp.1992 article ftrepec https://doi.org/10.1002/ppp.1992 2020-12-04T13:31:03Z Slopes in and around Thomas Lee Inlet (Devon Island, Nunavut, Canada) are eroded by means of gullying, yet the driving factors, such as the nature of the substrate and availability of different sources for water, influencing gully morphology remain poorly understood. Here we investigate the factors that contribute to gully formation using a combination of satellite mapping, field observations and statistical analysis of morphological data. In total, 161 gullies were mapped within the 126 km2 study area. Factors linked to gullies, such as the nature of its substrate and the presence of glaciers, were integrated into a spatial geodatabase. A Factor Analysis of Mixed Data performed on the geodatabase was used to discriminate which factors may influence gully geometry. Our results show that the type of geological formation has a strong impact on gully slope. In addition, supplemental sources of water are often found near alcoves of the steep, longer and mature gullies, and levees often form in their aprons. Immature debris flow‐like gullies were dryer and found on short and variable (from steep to gentle) slopes. This detailed study of the rocky and arid Thomas Lee Inlet plateaus and slopes provides the first insight into gullied slopes as a hydrological component connecting upland units to downslope in this area. Article in Journal/Newspaper Arctic Devon Island glacier* Nunavut RePEc (Research Papers in Economics) Arctic Canada Devon Island ENVELOPE(-88.000,-88.000,75.252,75.252) Nunavut Thomas Lee Inlet ENVELOPE(-89.084,-89.084,75.585,75.585) Permafrost and Periglacial Processes 30 1 19 34 |
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Open Polar |
collection |
RePEc (Research Papers in Economics) |
op_collection_id |
ftrepec |
language |
unknown |
description |
Slopes in and around Thomas Lee Inlet (Devon Island, Nunavut, Canada) are eroded by means of gullying, yet the driving factors, such as the nature of the substrate and availability of different sources for water, influencing gully morphology remain poorly understood. Here we investigate the factors that contribute to gully formation using a combination of satellite mapping, field observations and statistical analysis of morphological data. In total, 161 gullies were mapped within the 126 km2 study area. Factors linked to gullies, such as the nature of its substrate and the presence of glaciers, were integrated into a spatial geodatabase. A Factor Analysis of Mixed Data performed on the geodatabase was used to discriminate which factors may influence gully geometry. Our results show that the type of geological formation has a strong impact on gully slope. In addition, supplemental sources of water are often found near alcoves of the steep, longer and mature gullies, and levees often form in their aprons. Immature debris flow‐like gullies were dryer and found on short and variable (from steep to gentle) slopes. This detailed study of the rocky and arid Thomas Lee Inlet plateaus and slopes provides the first insight into gullied slopes as a hydrological component connecting upland units to downslope in this area. |
format |
Article in Journal/Newspaper |
author |
Etienne Godin Gordon R. Osinski Tanya N. Harrison Alexandra Pontefract Michael Zanetti |
spellingShingle |
Etienne Godin Gordon R. Osinski Tanya N. Harrison Alexandra Pontefract Michael Zanetti Geomorphology of Gullies at Thomas Lee Inlet, Devon Island, Canadian High Arctic |
author_facet |
Etienne Godin Gordon R. Osinski Tanya N. Harrison Alexandra Pontefract Michael Zanetti |
author_sort |
Etienne Godin |
title |
Geomorphology of Gullies at Thomas Lee Inlet, Devon Island, Canadian High Arctic |
title_short |
Geomorphology of Gullies at Thomas Lee Inlet, Devon Island, Canadian High Arctic |
title_full |
Geomorphology of Gullies at Thomas Lee Inlet, Devon Island, Canadian High Arctic |
title_fullStr |
Geomorphology of Gullies at Thomas Lee Inlet, Devon Island, Canadian High Arctic |
title_full_unstemmed |
Geomorphology of Gullies at Thomas Lee Inlet, Devon Island, Canadian High Arctic |
title_sort |
geomorphology of gullies at thomas lee inlet, devon island, canadian high arctic |
url |
https://doi.org/10.1002/ppp.1992 |
long_lat |
ENVELOPE(-88.000,-88.000,75.252,75.252) ENVELOPE(-89.084,-89.084,75.585,75.585) |
geographic |
Arctic Canada Devon Island Nunavut Thomas Lee Inlet |
geographic_facet |
Arctic Canada Devon Island Nunavut Thomas Lee Inlet |
genre |
Arctic Devon Island glacier* Nunavut |
genre_facet |
Arctic Devon Island glacier* Nunavut |
op_relation |
https://doi.org/10.1002/ppp.1992 |
op_doi |
https://doi.org/10.1002/ppp.1992 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
30 |
container_issue |
1 |
container_start_page |
19 |
op_container_end_page |
34 |
_version_ |
1766339167580585984 |