A simple law for ice-shelf calving.

Alley, Richard B; Horgan, Huw J; Joughin, Ian; Cuffey, Kurt M; Dupont, Todd K; Parizek, Byron R; Anandakrishnan, Sridhar; Bassis, Jeremy · Science · 2008

basic_science · Level V

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Abstract

A major problem for ice-sheet models is that no physically based law for the calving process has been established. Comparison across a diverse set of ice shelves demonstrates that iceberg calving increases with the along-flow spreading rate of a shelf. This relation suggests that frictional buttressing loss, which increases spreading, also leads to shelf retreat, a process known to accelerate ice-sheet flow and contribute to sea-level rise.