Articles | Volume 14, issue 7
The Cryosphere, 14, 2429–2448, 2020
https://doi.org/10.5194/tc-14-2429-2020
The Cryosphere, 14, 2429–2448, 2020
https://doi.org/10.5194/tc-14-2429-2020
Research article
27 Jul 2020
Research article | 27 Jul 2020

Using a composite flow law to model deformation in the NEEM deep ice core, Greenland – Part 1: The role of grain size and grain size distribution on deformation of the upper 2207 m

Ernst-Jan N. Kuiper et al.

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Short summary
A composite flow law model applied to crystal size distributions from the NEEM deep ice core predicts that fine-grained layers in ice from the last Glacial period localize deformation as internal shear zones in the Greenland ice sheet deforming by grain-size-sensitive creep. This prediction is consistent with microstructures in Glacial age ice.