Climate and Terrain Characteristics Linked to Mud Ejection Occurrence in the Canadian High Arctic
Pressurised slurries of fine-grained sediment expelled from the base of the active layer have been observed in recent years in the High Arctic. Such mud ejections, however, are poorly understood in terms of how exactly climate and landscape factors determine when and where they occur. Mud ejections...
Published in: | Permafrost and Periglacial Processes |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2016
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Online Access: | http://hdl.handle.net/1974/14587 https://doi.org/10.1002/ppp.1870 |
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ftqueensuniv:oai:qspace.library.queensu.ca:1974/14587 2023-05-15T14:47:53+02:00 Climate and Terrain Characteristics Linked to Mud Ejection Occurrence in the Canadian High Arctic Holloway, Jean E. Lamoureux, Scott F. Montro, Scott N. Lafrenère, Melissa J. 2016-06-16T14:45:09Z http://hdl.handle.net/1974/14587 https://doi.org/10.1002/ppp.1870 en eng 1045-6740 doi:10.1002/ppp.1870 http://hdl.handle.net/1974/14587 Permafrost Mud Ejections Climate Active-Layer Dynamics Remote Sensing Permafrost Disturbance journal article 2016 ftqueensuniv https://doi.org/10.1002/ppp.1870 2020-12-29T09:08:52Z Pressurised slurries of fine-grained sediment expelled from the base of the active layer have been observed in recent years in the High Arctic. Such mud ejections, however, are poorly understood in terms of how exactly climate and landscape factors determine when and where they occur. Mud ejections at the Cape Bounty Arctic Watershed Observatory, Melville Island, Nunavut, were systematically mapped in 2012 and 2013, and this was combined with observations of mud ejection activity and climatic measurements carried out since 2003. The mud ejections occur late in the melt season during warm years and closely following major rainfall events. High-resolution satellite imagery demonstrates that mud ejections are associated with polar semi-desert vegetative settings, flat or low-sloping terrain and south-facing slopes. The localised occurrence of mud ejections appears to be related to differential soil moisture retention. Article in Journal/Newspaper Arctic Nunavut permafrost Melville Island Queen's University, Ontario: QSpace Arctic Cape Bounty ENVELOPE(-109.542,-109.542,74.863,74.863) Nunavut Permafrost and Periglacial Processes 27 2 204 218 |
institution |
Open Polar |
collection |
Queen's University, Ontario: QSpace |
op_collection_id |
ftqueensuniv |
language |
English |
topic |
Permafrost Mud Ejections Climate Active-Layer Dynamics Remote Sensing Permafrost Disturbance |
spellingShingle |
Permafrost Mud Ejections Climate Active-Layer Dynamics Remote Sensing Permafrost Disturbance Holloway, Jean E. Lamoureux, Scott F. Montro, Scott N. Lafrenère, Melissa J. Climate and Terrain Characteristics Linked to Mud Ejection Occurrence in the Canadian High Arctic |
topic_facet |
Permafrost Mud Ejections Climate Active-Layer Dynamics Remote Sensing Permafrost Disturbance |
description |
Pressurised slurries of fine-grained sediment expelled from the base of the active layer have been observed in recent years in the High Arctic. Such mud ejections, however, are poorly understood in terms of how exactly climate and landscape factors determine when and where they occur. Mud ejections at the Cape Bounty Arctic Watershed Observatory, Melville Island, Nunavut, were systematically mapped in 2012 and 2013, and this was combined with observations of mud ejection activity and climatic measurements carried out since 2003. The mud ejections occur late in the melt season during warm years and closely following major rainfall events. High-resolution satellite imagery demonstrates that mud ejections are associated with polar semi-desert vegetative settings, flat or low-sloping terrain and south-facing slopes. The localised occurrence of mud ejections appears to be related to differential soil moisture retention. |
format |
Article in Journal/Newspaper |
author |
Holloway, Jean E. Lamoureux, Scott F. Montro, Scott N. Lafrenère, Melissa J. |
author_facet |
Holloway, Jean E. Lamoureux, Scott F. Montro, Scott N. Lafrenère, Melissa J. |
author_sort |
Holloway, Jean E. |
title |
Climate and Terrain Characteristics Linked to Mud Ejection Occurrence in the Canadian High Arctic |
title_short |
Climate and Terrain Characteristics Linked to Mud Ejection Occurrence in the Canadian High Arctic |
title_full |
Climate and Terrain Characteristics Linked to Mud Ejection Occurrence in the Canadian High Arctic |
title_fullStr |
Climate and Terrain Characteristics Linked to Mud Ejection Occurrence in the Canadian High Arctic |
title_full_unstemmed |
Climate and Terrain Characteristics Linked to Mud Ejection Occurrence in the Canadian High Arctic |
title_sort |
climate and terrain characteristics linked to mud ejection occurrence in the canadian high arctic |
publishDate |
2016 |
url |
http://hdl.handle.net/1974/14587 https://doi.org/10.1002/ppp.1870 |
long_lat |
ENVELOPE(-109.542,-109.542,74.863,74.863) |
geographic |
Arctic Cape Bounty Nunavut |
geographic_facet |
Arctic Cape Bounty Nunavut |
genre |
Arctic Nunavut permafrost Melville Island |
genre_facet |
Arctic Nunavut permafrost Melville Island |
op_relation |
1045-6740 doi:10.1002/ppp.1870 http://hdl.handle.net/1974/14587 |
op_doi |
https://doi.org/10.1002/ppp.1870 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
27 |
container_issue |
2 |
container_start_page |
204 |
op_container_end_page |
218 |
_version_ |
1766318988234588160 |