Articles | Volume 10, issue 6
https://doi.org/10.5194/tc-10-2603-2016
https://doi.org/10.5194/tc-10-2603-2016
Brief communication
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04 Nov 2016
Brief communication | Highlight paper |  | 04 Nov 2016

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

Christopher J. Fogwill, Erik van Sebille, Eva A. Cougnon, Chris S. M. Turney, Steve R. Rintoul, Benjamin K. Galton-Fenzi, Graeme F. Clark, E. M. Marzinelli, Eleanor B. Rainsley, and Lionel Carter

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Cited articles

Broecker, W., Peacock, S., Walker, S., Weiss, R., Fahrbach, E., Schröder, M., Mikolajewicz, U., Heinze, C., Key, R., and Peng, T.: How much deep water is formed in the Southern Ocean?, J. Geophys. Res., 103, 15833–15843, 1998.
Campagne, P., Crosta, X., Houssais, M. N., Swingedouw, D., Schmidt, S., Martin, A., Devred, E., Capo, S., Marieu, V., Closset, I., and Massé, G.: Glacial ice and atmospheric forcing on the Mertz Glacier Polynya over the past 250 years, Nat. Commun., 6, 6642, https://doi.org/10.1038/ncomms7642, 2015.
Clark, G., Marzinelli, E., Fogwill, C. J., Turney, C. S. M., and Johnston, E.: Effects of sea-ice cover on marine benthic communities: a natural experiment in Commonwealth Bay, East Antarctica, Polar Biol., 38, 1213, https://doi.org/10.1007/s00300-015-1688-x, 2015.
Cougnon, E. A.: Modelling the sensitivity of dense shelf water formation in the Mertz Glacier region, East Antarctica, unpublished PhD thesis, 210 pp., University of Tasmania, 2016.
Cougnon, E. A., Galton-Fenzi, B. K., Meijers, A. J. S., and Legrésy, B.: Modeling interannual dense shelf water export in the region of the Mertz Glacier Tongue (1992–2007), J. Geophys. Res.-Ocean., 118, 5858–5872, https://doi.org/10.1002/2013JC008790, 2013.
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Short summary
Here we report new data from in situ oceanographic surveys and high-resolution ocean modelling experiments in the Commonwealth Bay region of East Antarctica, where in 2010 there was a major reconfiguration of the regional icescape due to the collision of the 97 km long iceberg B09B with the Mertz Glacier tongue. Here we compare post-calving observations with high-resolution ocean modelling which suggest that this reconfiguration has led to the development of a new polynya off Commonwealth Bay.