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Spatial patterns of snow accumulation across Belcher Glacier, Devon Ice Cap, Nunavut, Canada

  • Tyler Sylvestre (a1), Luke Copland (a1), Michael N. Demuth (a2) and Martin Sharp (a3)
Abstract

Ground-penetrating radar (GPR) surveys at a center frequency of 500 MHz were used to determine winter (2007/08) and net annual (2005–07) snow water equivalent (SWE) patterns across the upper parts of Belcher Glacier, Devon Ice Cap, Nunavut, Canada. The GPR measurements were validated against snow depths determined from avalanche probe measurements, and converted to SWE values using densities measured with a down-borehole neutron density probe and in shallow snow pits. Distinct internal reflection horizons (IRHs) in the GPR record were formed during warm summers in 2007 and 2005, and a large rain event in summer 2006 which caused ice to accumulate above the 2005 melt surface. Elevation provides the dominant control on winter SWE distribution across the basin, with surface topography (e.g. gullies) also being locally important. Based on the location where IRHs intersected the ice-cap surface, the basin-wide firn line occurred at an altitude of 1260–1300 m over the period 2005–08. Net mass balance across the accumulation area of Belcher Glacier averaged 0.24 m w.e. a−1 over the period 2005–07, mainly dependent on altitude. This is a little higher than most previous estimates for the period since the 1960s, although the differences lie within error limits.

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References
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Anschütz, H, Steinhage, D, Eisen, O, Oerter, H, Horwath, M and Ruth, U (2008) Small-scale spatio-temporal characteristics of accumulation rates in western Dronning Maud Land, Antarctica. J. Glaciol., 54(185), 315323 (doi: 10.3189/002214308784886243)
Arcone, SA, Spikes, VB, Hamilton, GS and Mayewski, PA (2004) Stratigraphic continuity in 400 MHz short-pulse radar profiles of firn in West Antarctica. Ann. Glaciol., 39, 195200 (doi: 10.3189/172756404781813925)
Arcone, SA, Spikes, VB and Hamilton, GS (2005) Stratigraphic variation in polar firn caused by differential accumulation and ice flow: interpretation of a 400 MHz short-pulse radar profile from West Antarctica. J. Glaciol., 51(174), 407422 (doi: 10.3189/172756505781829151)
Bell, JP (1969) A new design principle for neutron soil moisture gauges: the Wallingford neutron probe. Soil Sci., 103(3), 160164
Burgess, D and Sharp, MJ (2008) Recent changes in thickness of the Devon Island ice cap, Canada. J. Geophys. Res., 113(B7), B07204 (doi: 10.1029/2007JB005238)
Cogley, JG, Adams, WP, Ecclestone, MA, Jung-Rothenhäusler, F and Ommanney, CSL (1996) Mass balance of White Glacier, Axel Heiberg Island, N.W.T., Canada, 1960–1991. J. Glaciol., 42(142), 548563
Colgan, W and Sharp, M (2008) Combined oceanic and atmospheric influences on net accumulation on Devon Ice Cap, Nunavut, Canada. J. Glaciol., 54(184), 2840 (doi: 10.3189/002214308784409044)
Colgan, W, Davis, J and Sharp, M (2008) Is the high-elevation region of the Devon Ice Cap thickening? J. Glaciol., 54(186), 428436 (doi: 10.3189/002214308785837084)
Copland, L (1998) The use of terrain analysis in the evaluation of snow cover over an alpine glacier. In Lane, SN, Richards, KS and Chandler, JH eds. Landform monitoring, modelling and analysis. Wiley, Chichester, 385404
Deems, JS, Fassnacht, SR and Elder, K (2006) Fractal distribution of snow depth from LiDAR data. J. Hydromet., 7(2), 285297 (doi: 10.1175/JHM487.1)
Demuth, MN, Marshall, H-P and Morris, EM (2007) High-resolution near-surface snow stratigraphy inferred from ground-based 8–18 GHz FMCW radar measurements: Devon Ice Cap, Nunavut, Canada 2005–06, CryoSat Validation Experiment. In Hellström, R and Frankenstein, S eds. Proceedings of the 64th Eastern Snow Conference, 29 May–1 June 2007, St John’s, Newfoundland, Canada. Cold Regions Research and Engineering Laboratory, Hanover, NH, 916
Dunse, T, Eisen, O, Helm, V, Rack, W, Steinhage, D and Parry, V (2008) Characteristics and small-scale variability of GPR signals and their relation to snow accumulation in Greenland’s percolation zone. J. Glaciol., 54(185), 333342 (doi: 10.3189/002214308784886207)
Dunse, T, Schuler, TV, Hagen, JO, Eiken, T, Brandt, O and Høgda, KA (2009) Recent fluctuations in the extent of the firn area of Austfonna, Svalbard, inferred from GPR. Ann. Glaciol., 50, 155162 (doi: 10.3189/172756409787769780)
Eisen, O and 15 others (2008) Ground-based measurements of spatial and temporal variability of snow accumulation in East Antarctica. Rev. Geophys., 46(RG2), RG2001 (doi: 10.1029/2006RG000218)
Elder, K, Dozier, J and Michaelsen, J (1991) Snow accumulation and distribution in an alpine watershed. Water Resour. Res., 27(7), 15411552 (doi: 10.1029/91WR00506)
Hawley, RL, Morris, EM, Cullen, R, Nixdorf, U, Shepherd, AP and Wingham, DJ (2006) ASIRAS airborne radar resolves internal annual layers in the dry-snow zone of Greenland. Geophys. Res. Lett., 33(4), L04502 (doi: 10.1029/2005GL025147)
Hawley, RL, Brandt, O, Morris, EM, Kohler, J, Shepherd, AP and Wingham, DJ (2008) Techniques for measuring high-resolution firn density profiles: a case study from Kongsvegen, Svalbard. J. Glaciol., 54(186), 463468 (doi: 10.3189/002214308785837020)
Koerner, RM (1966) Accumulation on the Devon Island ice cap, Northwest Territories, Canada. J. Glaciol., 6(45), 383392
Koerner, RM (1977) Devon Island ice cap: core stratigraphy and paleoclimate. Science, 196(4285), 1518 (doi: 10.1126/science.196.4285.15)
Koerner, RM and Russell, RD (1979) δ18O variations in snow on the Devon Island ice cap, Northwest Territories, Canada. Can. J. Earth Sci., 16(7), 14191427
Kohler, J, Moore, J, Kennett, M, Engeset, R and Elvehøy, H (1997) Using ground-penetrating radar to image previous years’ summer surfaces for mass-balance measurements. Ann. Glaciol., 24, 355360
Korona, J, Berthier, E, Bernard, M, Rémy, F and Thouvenot, E (2009) SPIRIT. SPOT 5 stereoscopic survey of polar ice: reference images and topographies during the fourth International Polar Year (2007–2009). ISPRS J. Photogramm. Remote Sens., 64(2), 204212 (doi: 10.1016/j.isprsjprs.2008.10.005)
Kovacs, A, Gow, AJ and Morey, RM (1995) The in-situ dielectric constant of polar firn revisited. Cold Reg. Sci. Technol., 23(3), 245256 (doi: 10.1016/0165-232X(94)00016-Q)
Langley, K and 6 others (2008) From glacier facies to SAR backscatter zones via GPR. IEEE Trans. Geosci. Remote Sens., 46(9), 25062516 (doi: 10.1109/TGRS.2008.918648)
Mair, D, Burgess, D and Sharp, M (2005) Thirty-seven year mass balance of Devon Ice Cap, Nunavut, Canada, determined by shallow ice coring and melt modelling. J. Geophys. Res., 110(F1), F01011 (doi: 10.1029/2003JF000099)
Maurer, JAI (2006) Local-scale snow accumulation variability on the Greenland ice sheet from ground-penetrating radar (GPR). (MA thesis, University of Colorado)
Morris, EM (2008) A theoretical analysis of the neutron-scattering method for measuring snow and ice density. J. Geophys. Res., 113(F3), F03019 (doi: 10.1029/2007JF000962)
Morris, EM and Cooper, JD (2003) Density measurements in ice boreholes using neutron scattering. J. Glaciol., 49(167), 599604 (doi: 10.3189/172756503781830403)
Pälli, A and 6 others (2002) Spatial and temporal variability of snow accumulation using ground-penetrating radar and ice cores on a Svalbard glacier. J. Glaciol., 48(162), 417424 (doi: 10.3189/172756502781831205)
Parry, V and 6 others (2007) Investigations of meltwater refreezing and density variations in the snowpack and firn within the percolation zone of the Greenland ice sheet. Ann. Glaciol., 46, 6168 (doi: 10.3189/172756407782871332)
Pinglot, JF, Hagen, JO, Melvold, K, Eiken, T and Vincent, C (2001) A mean net accumulation pattern derived from radioactive layers and radar soundings on Austfonna, Nordaustlandet, Svalbard. J. Glaciol., 47(159), 555566 (doi: 10.3189/172756501781831800)
Pinglot, JF and 13 others (2003) Ice cores from Arctic sub-polar glaciers: chronology and post-depositional processes deduced from radioactivity measurements. J. Glaciol., 49(164), 149158 (doi: 10.3189/172756503781830944)
Spikes, VB, Hamilton, GS, Arcone, SA, Kaspari, S and Mayewski, P (2004) Variability in accumulation rates from GPR profiling on the West Antarctic plateau. Ann. Glaciol., 39, 238244 (doi: 10.3189/172756404781814393)
Taurisano, A and 6 others (2007) The distribution of snow accumulation across Austfonna ice cap Svalbard: direct measurements and modelling. Polar Res., 26(1), 713 (doi: 10.1111/j.1751-8369.2007.00004.x)
Van Wychen, W, Copland, L, Gray, L, Burgess, D, Danielson, B and Sharp, M (2012) Spatial and temporal variation of ice motion and ice flux from Devon Ice Cap, Nunavut, Canada. J. Glaciol., 58(210), 657664 (doi: 10.3189/2012JoG11J164)
Wang, L, Sharp, MJ, Rivard, B, Marshall, S and Burgess, D (2005) Melt season duration on Canadian Arctic ice caps, 2000– 2004. Geophys. Res. Lett., 32(19), L19502 (doi: 10.1029/2005GL023962)
Wohlleben, TMH (2009) Ice–atmosphere interactions in the Canadian High Arctic: implications for the thermo-mechanical evolution of terrestrial ice masses. (PhD thesis, University of Alberta)
Wolken, GJ, Sharp, M and Wang, L (2009) Snow and ice facies variability and ice layer formation on Canadian Arctic ice caps, 1999–2005. J. Geophys. Res., 114(F3), F03011 (doi: 10.1029/2008JF001173)
Woo, MK, Heron, R, Marsh, P and Steer, P (1983) Comparison of weather station snowfall with winter snow accumulation in High Arctic basins. Atmos.–Ocean, 21(3), 312325 (doi: 10.1080/07055900.1983.9649171) 7981
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Journal of Glaciology
  • ISSN: 0022-1430
  • EISSN: 1727-5652
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