Basal melting, roughness and structural integrity of ice shelves

Larter, Robert D. ORCID: https://orcid.org/0000-0002-8414-7389. 2022 Basal melting, roughness and structural integrity of ice shelves. Geophysical Research Letters, 49 (4), e2021GL097421. 5, pp. 10.1029/2021GL097421

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Abstract/Summary

Ice shelves restrict outflow from many of the largest glaciers in Antarctica, thus limiting the Antarctic contribution to sea-level rise. However, past ice-shelf collapse events show they are highly vulnerable to surface and basal melting. Collapse of ice shelves in front of glaciers flowing on retrograde slopes could initiate runaway retreat processes. Difficulty in projecting how quickly these could play out makes dynamic ice loss from Antarctica the largest uncertainty in predicting future sea-level rise. Basal melting can impact structural integrity of ice shelves in several ways. Results from analyses of variations in ice-shelf roughness by Watkins, Bassis, & Thouless (2021; https://doi.org/10.1029/2021GL094743) raise the tantalizing prospect that this may provide a simple quantitative measure of how the structural integrity of an ice shelf has been impacted by basal melting. Applying the method to additional ice shelves would be useful to examine how other factors may contribute to roughness.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1029/2021GL097421
ISSN:	0094-8276
Additional Keywords:	ice shelf, basal melting, roughness, radio-echo sounding, glacier
Date made live:	08 Feb 2022 11:29 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/531911

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