Preprints
https://doi.org/10.5194/tcd-8-1111-2014
https://doi.org/10.5194/tcd-8-1111-2014
14 Feb 2014
 | 14 Feb 2014
Status: this preprint has been withdrawn by the authors.

Combining damage and fracture mechanics to model calving

J. Krug, J. Weiss, O. Gagliardini, and G. Durand

Abstract. Calving of icebergs is a major negative component of polar ice-sheet mass balance. We present a new calving modeling framework relying on both continuum damage mechanics and linear elastic fracture mechanics. This combination accounts for both the slow sub-critical surface crevassing and fast propagation of crevasses when calving occurs. First, damage of the ice occurs over long timescales and enhances the viscous flow of ice. Then brittle fracture propagation happens downward, over very short timescales, in ice considered as an elastic medium. The model is validated on Helheim Glacier, South-West Greenland, one of the most monitored fast-flowing outlet glacier. This allows to identify sets of model parameters giving a consistent response of the model and producing a dynamic equilibrium in agreement with observed stable position of the Helheim ice front between 1930 and today.

This preprint has been withdrawn.

J. Krug, J. Weiss, O. Gagliardini, and G. Durand

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Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
J. Krug, J. Weiss, O. Gagliardini, and G. Durand
J. Krug, J. Weiss, O. Gagliardini, and G. Durand

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This preprint has been withdrawn.