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| Titel |
Spatial Patterns of Snow Accumulation across Belcher Glacier, Devon Island, Nunavut, Canada |
| VerfasserIn |
T. Sylvestre, L. Copland, M. Demuth, J. Sekerka |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250020150
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| Zusammenfassung |
| This study describes results from measurements of variations in snow accumulation across
Belcher Glacier, Devon Ice Cap. Profiles from a 500 MHz GPR system are validated with
avalanche probe, neutron probe (density) and visual core stratigraphy to show how snow
accumulation varies spatially across the Belcher Glacier basin. This enables quantification of
the annual accumulation rate for 2007-8, and the spatial variability in accumulation since
1963 via the identification of a highly radioactive nuclear fallout layer in gamma
spectrometry measurements. Spatial variability in snow accumulation rates at the
decimeter scale can be evaluated using the 500 MHz GPR results to image the
subsurface to a depth of ~15 m. A combination of stratigraphic analysis of 10 shallow
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