Computer Analysis of a Glacier Inventory of Axel Heiberg Island: Canadian Arctic Archipelago

Ommanney, C. Simon L.; Goodman, R. H.; Müller, Fr.

doi:10.1080/02626666909493698

Cited by 16 publications

(39 citation statements)

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“…This study utilizes airborne‐radar measurements of ice thickness collected by NASA's Operation Icebridge campaigns over the Canadian High Arctic in May 2012 (for 56% of glaciers) and 2006 (5% of glaciers) [ Gogineni , ], the Scott Polar Research Institute in 2000 (32% of glaciers) [ Dowdeswell et al ., ], and by the University of British Columbia in 1981 (5% of glaciers) [ Narod et al ., ]. The fluxgate for the Good Friday Bay Glacier on Axel Heiberg Island is located ~20 km from the calving front and uses a centerline ice thickness estimated using an area‐depth scaling scheme [ Ommanney , ]. This is the only glacier that relies on this data set and this thickness is ascribed a 40% uncertainty based on comparison of ice thickness estimates provided by Ommanney [] for four different locations on Axel Heiberg Island with nearby (within 1.5 km) ice thickness measurements from NASA's Operation Icebridge in 2006.…”

Section: Methodsmentioning

confidence: 99%

“…The fluxgate for the Good Friday Bay Glacier on Axel Heiberg Island is located ~20 km from the calving front and uses a centerline ice thickness estimated using an area‐depth scaling scheme [ Ommanney , ]. This is the only glacier that relies on this data set and this thickness is ascribed a 40% uncertainty based on comparison of ice thickness estimates provided by Ommanney [] for four different locations on Axel Heiberg Island with nearby (within 1.5 km) ice thickness measurements from NASA's Operation Icebridge in 2006.…”

Section: Methodsmentioning

confidence: 99%

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Glacier velocities and dynamic ice discharge from the Queen Elizabeth Islands, Nunavut, Canada

Wychen

Burgess

Gray

et al. 2014

Geophysical Research Letters

103

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Recent studies indicate an increase in glacier mass loss from the Canadian Arctic Archipelago as a result of warmer summer air temperatures. However, no complete assessment of dynamic ice discharge from this region exists. We present the first complete surface velocity mapping of all ice masses in the Queen Elizabeth Islands and show that these ice masses discharged~2.6 ± 0.8 Gt a À1 of ice to the oceans in winter2012. Approximately 50% of the dynamic discharge was channeled through non surge-type Trinity and Wykeham Glaciers alone. Dynamic discharge of the surge-type Mittie Glacier varied from 0.90 ± 0.09 Gt a À1during its 2003 surge to 0.02 ± 0.02 Gt a À1 during quiescence in 2012, highlighting the importance of surge-type glaciers for interannual variability in regional mass loss. Queen Elizabeth Islands glaciers currently account for~7.5% of reported dynamic discharge from Arctic ice masses outside Greenland.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Glacier velocities and dynamic ice discharge from the Queen Elizabeth Islands, Nunavut, Canada

Wychen

Burgess

Gray

et al. 2014

Geophysical Research Letters

103

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“…WGI data for Axel Heiberg Island (78–82˚ N) were originally provided by Ommanney (1969). Initial analysis of the WGI data was based on 241 local glaciers with data for altitude and accumulation-area aspect (Evans and Cox, 2005).…”

Section: Other Arctic Resultsmentioning

confidence: 99%

Climatogenic north–south asymmetry of local glaciers in Spitsbergen and other parts of the Arctic

Evans¹,

Cox²

2010

Ann. Glaciol.

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“…Ommanney (1969;Ommanney et al 1969) provided a spatially complete Inventory with few missing data. However, this is an area with coales− cent ice masses, and accumulation area aspects are given for only 526 of the 1091 glaciers; initial analyses (Evans and Cox 2005) were thus based on the 289 of these classified as local (valley, mountain or glacieret, WGI codes 5, 6 and 7).…”

Section: Axel Heiberg Island Canadamentioning

confidence: 99%

“…13. Mean ELA altitudes (m) per UTM 100 km grid square on Axel Heiberg Island, from data inOmmanney (1969). Numbers of glaciers involved are given in brackets.…”

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confidence: 99%

Glacier distribution and direction in Svalbard, Axel Heiberg Island and throughout the Arctic: General northward tendencies

Evans¹

2011

Polish Polar Research

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Arctic glaciers depend on supply of moisture, mostly from the Atlantic. The snowline is remarkably high in northeast Siberia, remote from this source. Because of dif− ferential solar radiation receipt, local glaciers have a northward−facing tendency throughout the Arctic. This is weaker than in dry mid−latitudes but low sun angles enhance the effects of shading, compensating for the broader range of aspects (i.e. slope directions) illuminated in summer. Statistics from the World Glacier Inventory and other sources show that mass bal− ance differences between slopes of different aspects give both more glaciers, and lower gla− ciers, facing the favoured direction: usually North. This is clear, for example, for local gla− ciers (and for all small glaciers) in central Spitsbergen and in Axel Heiberg Island. Wind ef− fects (drifting snow to leeward slopes) are much less important, except in northwest Europe from Norway to Novaya Zemlya which is under the strong influence of westerly winds, greatest in the Polar and Sub−polar Urals. A thorough analysis is provided of aspect data for local glaciers within and near the Arctic Circle, and of variation in glacier mid−altitude with aspect and position. There is consistency between mean glacier aspect (in terms of num− bers) and aspect with lowest glaciers, everywhere except in Wrangel Island.

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Computer Analysis of a Glacier Inventory of Axel Heiberg Island: Canadian Arctic Archipelago

Cited by 16 publications

References 0 publications

Glacier velocities and dynamic ice discharge from the Queen Elizabeth Islands, Nunavut, Canada

Glacier velocities and dynamic ice discharge from the Queen Elizabeth Islands, Nunavut, Canada

Climatogenic north–south asymmetry of local glaciers in Spitsbergen and other parts of the Arctic

Glacier distribution and direction in Svalbard, Axel Heiberg Island and throughout the Arctic: General northward tendencies

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