Ice-Related Data Series from Expedition Fiord
The mass balances of White Glacier and Baby Glacier, at 79.5o N on Axel Heiberg Island in the High Arctic of Canada, have been monitored since 1960. Photogrammetric estimates of terminus fluctuations are available for White Glacier and its larger neighbour, Thompson Glacier, from relatively frequent...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.538.7611 http://www.easternsnow.org/proceedings/2000/ecclestone2.pdf |
| Summary: | The mass balances of White Glacier and Baby Glacier, at 79.5o N on Axel Heiberg Island in the High Arctic of Canada, have been monitored since 1960. Photogrammetric estimates of terminus fluctuations are available for White Glacier and its larger neighbour, Thompson Glacier, from relatively frequent photographs dating back to the first recorded image in 1948. In addition, an ice-off (breakup) record for Colour Lake, located between White and Baby Glaciers, is available back to 1959. These data series, up to 1999, are presented. While the glacier records show an excess of ablation over accumulation and so suggest warming, the lake ice record and the advance of Thompson Glacier seem to indicate cooling. These records are of special significance because they are indices of conditions at nearly 80o N, where global models suggest that global warming should be most pronounced. However the large-scale significance of such local records should of course be assessed with caution. RÉSUMÉ |
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