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Brief communication: impacts of a developing polynya off Commonwealth Bay, East Antarctica, triggered by grounding of iceberg B09B

Citation

Fogwill, CJ and van Sebille, E and Cougnon, EA and Turney, CSM and Rintoul, SR and Galton-Fenzi, BK and Clark, GF and Marzinelli, EM and Rainsley, EB and Carter, L, Brief communication: impacts of a developing polynya off Commonwealth Bay, East Antarctica, triggered by grounding of iceberg B09B, Cryosphere, 10 pp. 2603-2609. ISSN 1994-0416 (2016) [Refereed Article]


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Author(s) 2016 Licenced under Creative Commons Attribution United States (CC BY 3.0 US) https://creativecommons.org/licenses/by/3.0/us/

DOI: doi:10.5194/tc-10-2603-2016

Abstract

The dramatic calving of the Mertz Glacier tongue in 2010, precipitated by the movement of iceberg B09B, reshaped the oceanographic regime across the Mertz Polynya and Commonwealth Bay, regions where high-salinity shelf water (HSSW) the precursor to Antarctic bottom water (AABW) is formed. Here we present post-calving observations that suggest that this reconfiguration and subsequent grounding of B09B have driven the development of a new polynya and associated HSSW production off Commonwealth Bay. Supported by satellite observations and modelling, our findings demonstrate how local icescape changes may impact the formation of HSSW, with potential implications for large-scale ocean circulation.

Item Details

Item Type:Refereed Article
Keywords:polynya, iceberg calving, sea ice, bottom water
Research Division:Earth Sciences
Research Group:Oceanography
Research Field:Physical Oceanography
Objective Division:Environment
Objective Group:Climate and Climate Change
Objective Field:Effects of Climate Change and Variability on Antarctic and Sub-Antarctic Environments (excl. Social Impacts)
Author:Cougnon, EA (Dr Eva Cougnon)
Author:Rintoul, SR (Dr Steve Rintoul)
Author:Galton-Fenzi, BK (Dr Ben Galton-Fenzi)
ID Code:113775
Year Published:2016
Deposited By:CRC-Antarctic Climate & Ecosystems
Deposited On:2017-01-19
Last Modified:2017-09-18
Downloads:15 View Download Statistics

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