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The Cryosphere An interactive open-access journal of the European Geosciences Union
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Short summary
Horizontal ice flow transports the firn layer of Greenland’s Percolation Zone as it undergoes burial by accumulation. Here we show that the firn density and temperature fields can reflect horizontal advection of the firn column across climate gradients, the magnitude of which varies around the ice sheet. Further, time series of melt features in ice cores from the percolation zone can contain a signature from ice motion that should not be conflated with that from climate change.
TC | Articles | Volume 14, issue 5
The Cryosphere, 14, 1703–1712, 2020
https://doi.org/10.5194/tc-14-1703-2020
The Cryosphere, 14, 1703–1712, 2020
https://doi.org/10.5194/tc-14-1703-2020

Research article 29 May 2020

Research article | 29 May 2020

Horizontal ice flow impacts the firn structure of Greenland's percolation zone

Rosemary Leone et al.

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Cited articles

Alley, R. B. and Bentley, C. R.: Ice-Core Analysis on the Siple Coast of West Antarctica, Ann. Glaciol., 11, 1–7, https://doi.org/10.3189/s0260305500006236, 1988. 
Arthern, R. J. and Wingham, D. J.: The natural fluctuations of firn densification and their effect on the geodetic determination of ice sheet mass balance, Clim. Change, 40, 605–624, 1998. 
Braithwaite, R. J., Laternser, M., and Pfeffer, W. T.: Variations of near-surface firn density in the lower accumulation area of the Greenland ice sheet, Pakitsoq, West Greenland, J. Glaciol., 40, 477–485, https://doi.org/10.1017/S002214300001234X, 1994. 
Colbeck, S. C.: A theory for water flow through a layered snowpack, Water Resour. Res., 11, 261–266, https://doi.org/10.1029/WR011i002p00261, 1975. 
Coléou, C. and Lesaffre, B.: Irreducible water saturation in snow: experimental results in a cold laboratory, Ann. Glaciol., 26, 64–68, https://doi.org/10.3189/1998aog26-1-64-68, 1998. 
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Short summary
Horizontal ice flow transports the firn layer of Greenland’s Percolation Zone as it undergoes burial by accumulation. Here we show that the firn density and temperature fields can reflect horizontal advection of the firn column across climate gradients, the magnitude of which varies around the ice sheet. Further, time series of melt features in ice cores from the percolation zone can contain a signature from ice motion that should not be conflated with that from climate change.
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