The Glacial Hydrology of an Ice-dammed Lake, Ellesmere Island, N.W.T.
McMaster Lake is a 7.2 km² ice-dammed lake ponded against the margin of the Ellesmere Ice Cap, Ellesmere Island; Northwest Territories. The lake occupies a deep structural basin, and was found to be smictic, with a near isothermal temperature profile of 0.0-0.5ºC, and a year round 3m thick ice cover...
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ftmcmaster:oai:macsphere.mcmaster.ca:11375/9834 2023-05-15T16:05:55+02:00 The Glacial Hydrology of an Ice-dammed Lake, Ellesmere Island, N.W.T. Blachut, Pamela Susan McCann, S.B. Geography 2009-06-18 http://hdl.handle.net/11375/9834 unknown opendissertations/492 1122 875950 http://hdl.handle.net/11375/9834 Geography thesis 2009 ftmcmaster 2022-03-22T21:10:38Z McMaster Lake is a 7.2 km² ice-dammed lake ponded against the margin of the Ellesmere Ice Cap, Ellesmere Island; Northwest Territories. The lake occupies a deep structural basin, and was found to be smictic, with a near isothermal temperature profile of 0.0-0.5ºC, and a year round 3m thick ice cover. The lake was observed over three seasons to lose 3-5 m of water rapidly during the month of August. In 1974 the outflow was monitored in Siphon Creek and the Sverdrup River, and a characteristic jokulhlaup hydrograph with a peak discharge of 85 m²/sec was observed. Correlation of the temperature, incoming solar radiation, relative humidity, and precipitation data collected at the McMaster Lakes site with Siphon Creek discharge yields a good explanation of variance in discharge prior to the jokulhlaup. The glaciology of the shelving glacier bordering McMaster Lake was found to be instrumental in the lake drainage behaviour, and the origins and activity of the ice shelf are documented. Consideration of the available data on McMaster Lake, and a review of existing theories leads to the proposal of a modified barrier flotation mechanism for the drainage of McMaster Lake. Master of Science (MS) Thesis Ellesmere Island Ice cap Ice Shelf Northwest Territories MacSphere (McMaster University) Northwest Territories Ellesmere Island Dammed Lake ENVELOPE(-68.258,-68.258,68.496,68.496) Siphon Creek ENVELOPE(-120.536,-120.536,56.533,56.533) |
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MacSphere (McMaster University) |
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ftmcmaster |
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Geography |
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Geography Blachut, Pamela Susan The Glacial Hydrology of an Ice-dammed Lake, Ellesmere Island, N.W.T. |
topic_facet |
Geography |
description |
McMaster Lake is a 7.2 km² ice-dammed lake ponded against the margin of the Ellesmere Ice Cap, Ellesmere Island; Northwest Territories. The lake occupies a deep structural basin, and was found to be smictic, with a near isothermal temperature profile of 0.0-0.5ºC, and a year round 3m thick ice cover. The lake was observed over three seasons to lose 3-5 m of water rapidly during the month of August. In 1974 the outflow was monitored in Siphon Creek and the Sverdrup River, and a characteristic jokulhlaup hydrograph with a peak discharge of 85 m²/sec was observed. Correlation of the temperature, incoming solar radiation, relative humidity, and precipitation data collected at the McMaster Lakes site with Siphon Creek discharge yields a good explanation of variance in discharge prior to the jokulhlaup. The glaciology of the shelving glacier bordering McMaster Lake was found to be instrumental in the lake drainage behaviour, and the origins and activity of the ice shelf are documented. Consideration of the available data on McMaster Lake, and a review of existing theories leads to the proposal of a modified barrier flotation mechanism for the drainage of McMaster Lake. Master of Science (MS) |
author2 |
McCann, S.B. Geography |
format |
Thesis |
author |
Blachut, Pamela Susan |
author_facet |
Blachut, Pamela Susan |
author_sort |
Blachut, Pamela Susan |
title |
The Glacial Hydrology of an Ice-dammed Lake, Ellesmere Island, N.W.T. |
title_short |
The Glacial Hydrology of an Ice-dammed Lake, Ellesmere Island, N.W.T. |
title_full |
The Glacial Hydrology of an Ice-dammed Lake, Ellesmere Island, N.W.T. |
title_fullStr |
The Glacial Hydrology of an Ice-dammed Lake, Ellesmere Island, N.W.T. |
title_full_unstemmed |
The Glacial Hydrology of an Ice-dammed Lake, Ellesmere Island, N.W.T. |
title_sort |
glacial hydrology of an ice-dammed lake, ellesmere island, n.w.t. |
publishDate |
2009 |
url |
http://hdl.handle.net/11375/9834 |
long_lat |
ENVELOPE(-68.258,-68.258,68.496,68.496) ENVELOPE(-120.536,-120.536,56.533,56.533) |
geographic |
Northwest Territories Ellesmere Island Dammed Lake Siphon Creek |
geographic_facet |
Northwest Territories Ellesmere Island Dammed Lake Siphon Creek |
genre |
Ellesmere Island Ice cap Ice Shelf Northwest Territories |
genre_facet |
Ellesmere Island Ice cap Ice Shelf Northwest Territories |
op_relation |
opendissertations/492 1122 875950 http://hdl.handle.net/11375/9834 |
_version_ |
1766401841080303616 |