HE34A:
Ice-Ocean Interactions and Circulation Around the Antarctic Margins I Posters


Session ID#: 23179

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:  Louise C Biddle, University of Gothenburg, Gothenburg, Sweden
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:
  • OM - Ocean Modeling
  • PL - Physical Oceanography: Mesoscale and Larger
  • PS - Physical Oceanography: Mesoscale and Smaller

Abstracts Submitted to this Session:

Cross-shelf exchange near the Totten Glacier (Invited) (306710)
Alessandro Silvano, Institute for Marine and Antarctic Studies, Hobart, Australia, Stephen R Rintoul, Antarctic Climate & Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, Australia, Hobart, Australia, Guy Darvall Williams, ACE CRC, University of Tasmania, Hobart, Australia and Beatriz Pena-Molino, Antarctic Climate and Ecosystems Cooperative Research Centre, Hobart Tasmania 7001, Australia
Evidence for a mantle heat source contribution to Pine Island Glacier melting (308837)
Brice Loose, University of Rhode Island, Graduate School of Oceanography, Narragansett, RI, United States, Alberto Naveira Garabato, University of Southampton, Southampton, United Kingdom, Peter Schlosser, Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, United States, William J Jenkins, WHOI, Woods Hole, MA, United States and Karen J. Heywood, University of East Anglia, Norwich, NR4, United Kingdom
Sill-Controlled Circulation in Ice Shelf Cavities (314289)
Ken Zhao1, Andrew Stewart2 and James C McWilliams2, (1)University of California Los Angeles, Los Angeles, CA, United States, (2)University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, CA, United States
Estimating the surface heat budget for an Antarctic Fjord (314853)
Lisa Hahn-Woernle, University of Hawaii at Manoa, Honolulu, HI, United States, Brian Powell, Univ. of Hawaii, Honolulu, HI, United States, Øyvind Lundesgaard, UH Manoa, Department of Oceanography, Honolulu, HI, United States, Craig R Smith, University of Hawaii at Manoa, Oceanography, Honolulu, HI, United States and Mark A Merrifield, Sch Ocean & Earth Sci & Tech, Honolulu, HI, United States
A mechanism for secondary sea ice formation driven by double-diffusive supercooling (319515)
Margaret Ruth Lindeman, Scripps Institution of Oceanography, La Jolla, CA, United States, Mary-Louise Timmermans, Yale University, New Haven, CT, United States and Andrew Wells, University of Oxford, Oxford, United Kingdom
Resolving eddies in regional ocean models of Antarctic shelf seas (325214)
Stefanie L Mack, University of Washington, Applied Physics Laboratory, Seattle, WA, United States, Michael S Dinniman, Old Dominion University, Center for Coastal Physical Oceanography, Norfolk, VA, United States, John Michael Klinck II, Old Dominion University, Norfolk, VA, United States, Dennis Joseph McGillicuddy Jr, Woods Hole Oceanographic Institution, Woods Hole, MA, United States and Laurence Padman, Earth & Space Research, Corvallis, OR, United States

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