HE21B:
Ice-Ocean Interactions and Circulation Around the Antarctic Margins I

Session ID#: 92341

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.
Co-Sponsor(s):
  • OM - Ocean Modeling
  • PL - Physical Oceanography: Mesoscale and Larger
  • PS - Physical Oceanography: Mesoscale and Smaller
Index Terms:

4255 Numerical modeling [OCEANOGRAPHY: GENERAL]
4262 Ocean observing systems [OCEANOGRAPHY: GENERAL]
4540 Ice mechanics and air/sea/ice exchange processes [OCEANOGRAPHY: PHYSICAL]
9310 Antarctica [GEOGRAPHIC LOCATION]
Primary Chair:  Andrew Stewart, University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, United States
Co-chairs:  Louise C Biddle, University of Gothenburg, Department of Marine Sciences, Gothenburg, Sweden, Matthew H England, Univ New South Wales, Sydney, Australia and Andrew F Thompson, California Institute of Technology, Pasadena, United States
Primary Liaison:  Andrew Stewart, University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, United States
Moderators:  Andrew Stewart, University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, United States and Louise C Biddle, University of Gothenburg, Department of Marine Science, Gothenburg, Sweden
Student Paper Review Liaison:  Andrew Stewart, University of California Los Angeles, Atmospheric and Oceanic Sciences, Los Angeles, United States

Abstracts Submitted to this Session:

Vulnerability of Eastern Thwaites Ice Shelf, West Antarctica to Warm Ocean Water: Insights from First AUV Exploration of Sub-Ice-Shelf Environment (656253)
Erin C Pettit, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States, Anna Wahlin, University of Gothenburg, Department of Marine Sciences, Gothenburg, Sweden, Karen J. Heywood, University of East Anglia, Norwich, United Kingdom, Bastien Yves Queste, University of East Anglia, Centre for Ocean and Atmospheric Sciences, Norwich, United Kingdom, Rob Hall, University of East Anglia, Norwich, NR4, United Kingdom, Lars Boehme, Scottish Oceans Institute, Sea Mammal Research Unit, St. Andrews, United Kingdom, Ted A Scambos, University of Colorado Boulder, Boulder, CO, United States, Jan Lenaerts, University of Colorado Boulder, Department of Atmospheric and Oceanic Sciences, Boulder, United States, Martin Truffer, University of Alaska Fairbanks, Geophysical Institute, Fairbanks, AK, United States, Atsuhiro Muto, The Pennsylvania State University, University Park, PA, United States and Christian Thomas Wild, Oregon State University, CEOAS, Corvallis, United States
Seaglider and Float Observations Beneath Dotson Ice Shelf, West Antarctica (653697)
Pierre Dutrieux1, Craig Lee2, Luc Rainville3, Jason I Gobat3, James B Girton4, Knut A Christianson5, Tae-Wan Kim6, SangHoon Lee6 and Romain Millan7, (1)Lamont-Doherty Earth Observatory, Palisades, NY, United States, (2)Univ Washington, Seattle, WA, United States, (3)University of Washington, Seattle, WA, United States, (4)Applied Physics Laboratory, University of Washington, Seattle, WA, United States, (5)University of Washington, Earth and Space Sciences, Seattle, WA, United States, (6)KOPRI Korea Polar Research Institute, Incheon, Korea, Republic of (South), (7)University of Grenoble Alpes, Grenoble, France
Updating our understanding of oceanic controls on glacier terminus retreat along the west Antarctic Peninsula (648060)
David Sutherland1, Kiya L Riverman2, Michael S Dinniman3, Carlos F Moffat4, Borja Aguiar-González4, Ryan Obermeyer2 and John Michael Klinck II5, (1)University of Oregon, Eugene, OR, United States, (2)University of Oregon, Eugene, United States, (3)Old Dominion University, Center for Coastal Physical Oceanography, Norfolk, VA, United States, (4)University of Delaware, Newark, DE, United States, (5)Old Dominion University, Center for Coastal Physical Oceanography, Norfolk, United States
Positive and Negative Feedbacks to Antarctic Ice Shelf Melt in an Eddy Rich Global Ocean–Sea-Ice Model (648785)
Ruth Moorman1, Adele K Morrison2 and Andrew M Hogg1, (1)Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia, (2)Australian National University, Research School of Earth Sciences, Canberra, Australia
Turbulence Signature of a Cold-Water Plume from below the Nansen Ice Shelf – an Autonomous Underwater Glider Survey (657040)
Andrew MacWhorter Friedrichs1, Jasmin McInerney1, Alexander Forrest2, Cordielyn Goodrich3, Sébastien Manuel Lavanchy4, Craig L Stevens5, Seung-Tae Yoon6, Sukyoung Yun7 and Won Sang Lee7, (1)University of California Davis, Civil and Environmental Engineering, Davis, CA, United States, (2)University of California - Davis, Civil and Environmental Engineering, Davis, CA, United States, (3)University of Delaware, Newark, DE, United States, (4)L'Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland, (5)NIWA National Institute of Water and Atmospheric Research, Wellington, New Zealand, (6)Kyunpook National University, Daegu, South Korea, (7)Korea Polar Research Institute, Unit of Ice Sheet and Sea Level Changes, Incheon, South Korea
The circulation of the Bellingshausen Sea: heat and meltwater transports (647140)
Lena Schulze, Jacksonville University, Jacksonville, United States, Andrew F Thompson, California Institute of Technology, Pasadena, United States and Kevin Speer, Florida State University, Geophysical Fluid Dynamics Institute(GFDI), Department of Scientific Computing(DSC), Tallahassee, United States
Lagrangian pathways and residence time of warm Circumpolar Deep Water on the Antarctic continental shelf (639460)
Veronica Tamsitt, University of New South Wales, Climate Change Research Centre, Sydney, NSW, Australia, Matthew H England, Univ New South Wales, Sydney, Australia and Stephen R Rintoul, Antarctic Climate and Ecosystems Cooperative Research Centre (ACE CRC), Hobart, Australia
Downstream Influence of Totten Glacier Meltwater on Vincennes Bay Dense Shelf Water Production. (641257)
Natalia Ribeiro1, Guy Darvall Williams2, Laura Herraiz-Borreguero3, Stephen R Rintoul3, Mark Hindell2 and Clive McMahon2, (1)University of Tasmania, Hobart, TAS, Australia, (2)University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, TAS, Australia, (3)Commonwealth Scientic and Industrial Research Organization Oceans and Atmosphere, Hobart, TAS, Australia