HE41A:
Ice-Ocean Interactions and Circulation Around the Antarctic Margins II


Session ID#: 37081

Session Description:
Processes occurring at or close to the ice-ocean interface around Antarctica influence the state and circulation of a large proportion of the global ocean. The annual cycle of sea ice formation, export and melt is critical to the formation of both Antarctic Bottom Water and Antarctic Intermediate Water, which together fill more than half of the global sub-surface ocean. Inflow of warm Circumpolar Deep Water beneath floating shelves of marine-terminating glaciers promotes retreat of the grounded portion of the ice sheet, and thus sea level rise. Though historically limited by the prohibitive costs of in situ observations and high-resolution models, recent field campaigns and focused model development efforts are now rapidly advancing our understanding of these processes. This session will showcase recent advances in understanding the physical processes occurring in the Antarctic marginal seas, across the Antarctic continental shelf and slope, and within the ocean cavities beneath floating ice shelves. Studies based on observations, numerical models and theory are all welcome. The authors particularly encourage submissions addressing ocean-sea ice interactions, warm water pathways from continental slope to grounding zones, and inter-connectivity between sectors of the Antarctic margins and the broader Southern Ocean.
Primary Chair:  Andrew Stewart, University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, CA, United States
Co-chairs:  Andrew F Thompson, California Institute of Technology, Pasadena, CA, United States, Louise C Biddle, University of Gothenburg, Gothenburg, Sweden and Matthew H England, University of New South Wales, Climate Change Research Centre, Sydney, NSW, Australia
Moderators:  Louise C Biddle, University of Gothenburg, Gothenburg, Sweden, Andrew Stewart, University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, CA, United States, Andrew F Thompson, California Institute of Technology, Pasadena, CA, United States and Matthew H England, University of New South Wales, Climate Change Research Centre, Sydney, NSW, Australia
Student Paper Review Liaison:  Andrew F Thompson, California Institute of Technology, Pasadena, CA, United States
Index Terms:

4203 Analytical modeling and laboratory experiments [OCEANOGRAPHY: GENERAL]
4207 Arctic and Antarctic oceanography [OCEANOGRAPHY: GENERAL]
4255 Numerical modeling [OCEANOGRAPHY: GENERAL]
4262 Ocean observing systems [OCEANOGRAPHY: GENERAL]
Cross-Topics:
  • IS - Ocean Observatories, Instrumentation and Sensing Technologies
  • OM - Ocean Modeling
  • PL - Physical Oceanography: Mesoscale and Larger
  • PS - Physical Oceanography: Mesoscale and Smaller

Abstracts Submitted to this Session:

Eddies, submarine troughs, and the heat budget of the west Antarctic Peninsula continental shelf (313492)
Carlos F Moffat1, Michael S Dinniman2, John Michael Klinck II2, Borja Aguiar-González1, David A Sutherland3 and Jennifer A Graham4, (1)University of Delaware, School of Marine Science and Policy, Newark, DE, United States, (2)Old Dominion University, Center for Coastal Physical Oceanography, Norfolk, VA, United States, (3)University of Oregon, Eugene, OR, United States, (4)Met Office Hadley Centre, Exeter, United Kingdom
Ocean stratification reduces melt rates at the grounding zone of the Ross Ice Shelf (230412)
Carolyn Branecky Begeman1, Slawek M Tulaczyk1, Oliver John Marsh2, Jill Mikucki3, Timothy P Stanton4, Timothy O Hodson5, Matthew R Siegfried6, Ross D Powell7, Knut A Christianson8 and Matt A King9, (1)University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, CA, United States, (2)University of Canterbury, Gateway Antarctica, Christchurch, New Zealand, (3)University of Tennessee, Department of Microbiology, Knoxville, TN, United States, (4)Naval Postgraduate School, Oceanography, Monterey, CA, United States, (5)Illinois State Water Survey, Champaign, IL, United States, (6)Stanford University, Geophysics, Stanford, CA, United States, (7)Northern Illinois University, DeKalb, IL, United States, (8)University of Washington Seattle Campus, Earth and Space Sciences, Seattle, WA, United States, (9)University of Tasmania, Surveying and Spatial Sciences, School of Technology, Environments and Design, Hobart, TAS, Australia

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