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https://doi.org/10.5194/egusphere-2023-1949
https://doi.org/10.5194/egusphere-2023-1949
13 Sep 2023
 | 13 Sep 2023

Brief Communication: Rapid acceleration of the Brunt Ice Shelf after calving of iceberg A-81

Oliver J. Marsh, Adrian J. Luckman, and Dominic A. Hodgson

Abstract. The Brunt Ice Shelf, Antarctica, accelerated rapidly from 900 m a-1 to 1500 m a-1 during six months following the calving of a 1500 km2 iceberg on 22nd January 2023. Initially, the rate of acceleration increased by a factor of ten, with a second, smaller calving at the end of June 2023 leading to further tripling of acceleration. The acceleration is caused by reduction of buttressing at the McDonald Ice Rumples due to loss of contact with the sea floor and has led to high strain rates to the south, with potential consequences for the stability of the remaining ice shelf.

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Journal article(s) based on this preprint

13 Feb 2024
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Brief communication: Rapid acceleration of the Brunt Ice Shelf after calving of iceberg A-81
Oliver J. Marsh, Adrian J. Luckman, and Dominic A. Hodgson
The Cryosphere, 18, 705–710, https://doi.org/10.5194/tc-18-705-2024,https://doi.org/10.5194/tc-18-705-2024, 2024
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The requested preprint has a corresponding peer-reviewed final revised paper. You are encouraged to refer to the final revised version.

The ongoing acceleration and disintegration of Antarctic ice shelves is a topic of keen interest...
Short summary
The Brunt Ice Shelf has accelerated rapidly after calving of an iceberg in January 2023. Ten...
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