The effect of detachment sliding on surface wash erosion in the continuous permafrost zone, Hot Weather Creek, Fosheim Peninsula, Ellesmere Island, Northwest Territories.
An experimental design was developed to evaluate the effect of active-layer detachment sliding on surface wash erosion. Specifically, the aim was to examine to what extent the disturbance of vegetation cover, changes in hydrological conditions due to topographic modification by detachment sliding an...
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Université d'Ottawa / University of Ottawa
1998
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Online Access: | https://dx.doi.org/10.20381/ruor-10084 http://www.ruor.uottawa.ca/handle/10393/4070 |
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ftdatacite:10.20381/ruor-10084 2023-05-15T16:05:57+02:00 The effect of detachment sliding on surface wash erosion in the continuous permafrost zone, Hot Weather Creek, Fosheim Peninsula, Ellesmere Island, Northwest Territories. Kokelj, Steven V. 1998 https://dx.doi.org/10.20381/ruor-10084 http://www.ruor.uottawa.ca/handle/10393/4070 unknown Université d'Ottawa / University of Ottawa Physical Geography. Text Thesis article-journal ScholarlyArticle 1998 ftdatacite https://doi.org/10.20381/ruor-10084 2021-11-05T12:55:41Z An experimental design was developed to evaluate the effect of active-layer detachment sliding on surface wash erosion. Specifically, the aim was to examine to what extent the disturbance of vegetation cover, changes in hydrological conditions due to topographic modification by detachment sliding and the formation of a fresh active layer affect rates of surface wash erosion. Detachment slides generally accumulated more snow than adjacent slopes and yielded greater amounts of surface runoff than vegetated slopes with similar snow covers. Surface drainage was inhibited on well-vegetated hummocky slopes where lags between radiation inputs and discharge responses were greater than at the rilled detachment slide plots. During rainfall events following snowmelt, plot response was affected by antecedent moisture conditions and the vegetation cover: surface flow was generated only in detachment slide scars and at the mixed plots but not on vegetated undisturbed slopes or on the bare undisturbed slope. Suspended sediment concentrations at the fresh detachment slide scars are two orders of magnitude greater than on vegetated slopes. Greater amounts of surface runoff production at fresh scars and the removal of vegetation result in high rates of surface erosion and high sediment yields (1560 g/m$\sp2)$ at fresh detachment slide scars. (Abstract shortened by UMI.) Thesis Ellesmere Island Fosheim Peninsula Northwest Territories permafrost DataCite Metadata Store (German National Library of Science and Technology) Ellesmere Island Fosheim Peninsula ENVELOPE(-83.749,-83.749,79.669,79.669) Hot Weather Creek ENVELOPE(-84.466,-84.466,79.935,79.935) Northwest Territories |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
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topic |
Physical Geography. |
spellingShingle |
Physical Geography. Kokelj, Steven V. The effect of detachment sliding on surface wash erosion in the continuous permafrost zone, Hot Weather Creek, Fosheim Peninsula, Ellesmere Island, Northwest Territories. |
topic_facet |
Physical Geography. |
description |
An experimental design was developed to evaluate the effect of active-layer detachment sliding on surface wash erosion. Specifically, the aim was to examine to what extent the disturbance of vegetation cover, changes in hydrological conditions due to topographic modification by detachment sliding and the formation of a fresh active layer affect rates of surface wash erosion. Detachment slides generally accumulated more snow than adjacent slopes and yielded greater amounts of surface runoff than vegetated slopes with similar snow covers. Surface drainage was inhibited on well-vegetated hummocky slopes where lags between radiation inputs and discharge responses were greater than at the rilled detachment slide plots. During rainfall events following snowmelt, plot response was affected by antecedent moisture conditions and the vegetation cover: surface flow was generated only in detachment slide scars and at the mixed plots but not on vegetated undisturbed slopes or on the bare undisturbed slope. Suspended sediment concentrations at the fresh detachment slide scars are two orders of magnitude greater than on vegetated slopes. Greater amounts of surface runoff production at fresh scars and the removal of vegetation result in high rates of surface erosion and high sediment yields (1560 g/m$\sp2)$ at fresh detachment slide scars. (Abstract shortened by UMI.) |
format |
Thesis |
author |
Kokelj, Steven V. |
author_facet |
Kokelj, Steven V. |
author_sort |
Kokelj, Steven V. |
title |
The effect of detachment sliding on surface wash erosion in the continuous permafrost zone, Hot Weather Creek, Fosheim Peninsula, Ellesmere Island, Northwest Territories. |
title_short |
The effect of detachment sliding on surface wash erosion in the continuous permafrost zone, Hot Weather Creek, Fosheim Peninsula, Ellesmere Island, Northwest Territories. |
title_full |
The effect of detachment sliding on surface wash erosion in the continuous permafrost zone, Hot Weather Creek, Fosheim Peninsula, Ellesmere Island, Northwest Territories. |
title_fullStr |
The effect of detachment sliding on surface wash erosion in the continuous permafrost zone, Hot Weather Creek, Fosheim Peninsula, Ellesmere Island, Northwest Territories. |
title_full_unstemmed |
The effect of detachment sliding on surface wash erosion in the continuous permafrost zone, Hot Weather Creek, Fosheim Peninsula, Ellesmere Island, Northwest Territories. |
title_sort |
effect of detachment sliding on surface wash erosion in the continuous permafrost zone, hot weather creek, fosheim peninsula, ellesmere island, northwest territories. |
publisher |
Université d'Ottawa / University of Ottawa |
publishDate |
1998 |
url |
https://dx.doi.org/10.20381/ruor-10084 http://www.ruor.uottawa.ca/handle/10393/4070 |
long_lat |
ENVELOPE(-83.749,-83.749,79.669,79.669) ENVELOPE(-84.466,-84.466,79.935,79.935) |
geographic |
Ellesmere Island Fosheim Peninsula Hot Weather Creek Northwest Territories |
geographic_facet |
Ellesmere Island Fosheim Peninsula Hot Weather Creek Northwest Territories |
genre |
Ellesmere Island Fosheim Peninsula Northwest Territories permafrost |
genre_facet |
Ellesmere Island Fosheim Peninsula Northwest Territories permafrost |
op_doi |
https://doi.org/10.20381/ruor-10084 |
_version_ |
1766401861737250816 |