C51B:
Antarctic Ice Shelves: Surface and Basal Processes, Instability, and Breakup III Posters

Submit an Abstract to this Session



Session ID#: 24431

Session Description:
In Antarctica, 44% of the coastline is fringed by ice shelves extending 1.5 million km2. Ice shelves buttress flow from grounded ice into the sea, and so are an important control on ice sheet mass balance. As recent shelf loss on the Antarctic Peninsula has resulted in outlet glacier speed-up and sea level rise, understanding the processes leading to ice shelf instability and break-up is of huge societal importance. Changes in atmosphere/ocean circulation and air/water temperature are implicated in recent collapse events through their effects on surface/basal melting respectively. The precise mechanisms involved remain elusive, but it is thought that fracture mechanics may play a role. Here we seek contributions from all geoscientists investigating processes occurring above, on, within and below ice shelves through fieldwork, remote-sensing and modelling. Our aim is to improve knowledge about past and current ice shelf dynamics and stability, and elucidate potential future ice shelf states.
Primary Convener:  Amber Leeson, University of Lancaster, Lancaster Environment Centre / Data Science institute, Lancaster, United Kingdom
Conveners:  Ian Willis, University of Cambridge, Scott Polar Research Institute, Cambridge, United Kingdom, Alison F Banwell, UK Centre for Polar Observation and Modelling, Northumbria University, School of Geography and Natural Sciences, Newcastle upon Tyne, United Kingdom and Daniel Goldberg, University of Edinburgh, School of GeoSciences, Edinburgh, EH9, United Kingdom
Chairs:  Alison F Banwell, Scott Polar Research Institute, Cambridge, CB2, United Kingdom, Ian Willis, University of Cambridge, Scott Polar Research Institute, Cambridge, United Kingdom and Amber Leeson, University of Lancaster, Lancaster Environment Centre / Data Science institute, Lancaster, United Kingdom
OSPA Liaison:  Daniel Goldberg, University of Edinburgh, Edinburgh, EH9, United Kingdom
Index Terms:

0728 Ice shelves [CRYOSPHERE]
0746 Lakes [CRYOSPHERE]
0762 Mass balance 0764 Energy balance [CRYOSPHERE]
0774 Dynamics [CRYOSPHERE]

Abstracts Submitted to this Session:

Ocean stratification reduces melt rates at the grounding zone of the Ross Ice Shelf (210006)
Carolyn Branecky Begeman, University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, CA, United States, Slawek M Tulaczyk, University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, United States, Oliver Marsh, University of California San Diego, La Jolla, CA, United States, Jill Mikucki, University of Tennessee, Department of Microbiology, Knoxville, United States, Timothy P Stanton, Naval Postgraduate School, Oceanography, Monterey, CA, United States, Timothy O Hodson, Illinois State Water Survey, Champaign, United States, Matthew Siegfried, Stanford University, Department of Geophysics, Stanford, CA, United States, Ross D Powell, Northern Illinois Univ., Geology and Environmental Geosciences, De Kalb, IL, United States, Knut A Christianson, University of Washington Seattle Campus, Earth and Space Sciences, Seattle, WA, United States and Matt A King, University of Tasmania, Surveying and Spatial Sciences, School of Technology, Environments and Design, Hobart, TAS, Australia
Ocean Wave-to-Ice Energy Transfer Determined from Seafloor Pressure and Ice Shelf Seismic Observations (210083)
Zhao Chen1, Peter D Bromirski1, Peter Gerstoft2, Ralph A Stephen3, Douglas Wiens4, Richard C Aster5 and Andrew Nyblade6, (1)University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, (2)University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States, (3)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (4)Washington University in St. Louis, Department of Earth, Environmental, and Planetary Science, St. Louis, United States, (5)Colorado State University, Geosciences Department, Fort Collins, United States, (6)Pennsylvania State University, Department of Geosciences, University Park, United States
Surface and Subsurface Meltwater Ponding and Refreezing on the Bach Ice Shelf, Antarctic Peninsula (218567)
Ian Willis1, Emily Haggard1, Corinne Laura Benedek2, Douglas R MacAyeal3 and Alison F Banwell4, (1)University of Cambridge, Scott Polar Research Institute, Cambridge, United Kingdom, (2)University of Cambridge, Cambridge, United Kingdom, (3)International Glaciological Society, Cambridge, United Kingdom, (4)UK Centre for Polar Observation and Modelling, Northumbria University, School of Geography and Natural Sciences, Newcastle upon Tyne, United Kingdom
The International Glaciological Society: offering opportunity to publish in high quality, open access journals and to attend several targeted symposia and workshops every year. (220242)
Magnus Mar Magnusson and Douglas R MacAyeal, International Glaciological Society, Cambridge, United Kingdom
Ground-penetrating radar evidence of refrozen meltwater in the firn column of Larsen C Ice Shelf (224174)
Adam D Booth1, Heidi Sevestre2, Bernd Kulessa3, Suzanne Louise Bevan3, Bryn P Hubbard4, Adrian J Luckman3, Peter Kuipers Munneke5, Sammie Claire Buzzard6, David W Ashmore7 and Martin O'Leary3, (1)University of Leeds, School of Earth and Environment, Leeds, LS2, United Kingdom, (2)University of St Andrews, St Andrews, United Kingdom, (3)Swansea University, Glaciology Group, Swansea, United Kingdom, (4)Aberystwyth University, Department of Geography and Earth Sciences, Aberystwyth, United Kingdom, (5)Institute for Marine and Atmospheric Research Utrecht, Utrecht, Netherlands, (6)University of Reading, Reading, United Kingdom, (7)University of Liverpool, School of Environmental Sciences, Liverpool, United Kingdom
Evolution of Meltwater on the McMurdo Ice Shelf, Antarctica During Two Summer Melt Seasons (226147)
Grant John Macdonald, University of Chicago, Department of Geophysical Sciences, Chicago, IL, United States, Alison F Banwell, UK Centre for Polar Observation and Modelling, Northumbria University, School of Geography and Natural Sciences, Newcastle upon Tyne, United Kingdom, Ian Willis, Scott Polar Research Institute, Cambridge, United Kingdom, David P Mayer, United States Geological Survey, Astrogeology Science Center, Flagstaff, AZ, United States, Emily K Hansen, University of Chicago, Chicago, IL, United States and Douglas R MacAyeal, International Glaciological Society, Cambridge, United Kingdom
Ice Shelf and Coastal Change in Antarctica: New Mosaics of Antarctica and its Ice Flow (229046)
Marin J Klinger1, Terence M Haran1, Ted Scambos2, Jennifer A Bohlander3 and Karen E Alley4, (1)CIRES University of Colorado, National Snow and Ice Data Center, Boulder, CO, United States, (2)National Snow and Ice Data Center, University of Colorado, Boulder, CO, United States, (3)Polar Science Consulting, Cary, NC, United States, (4)University of Manitoba, Department of Environment and Geography, Winnipeg, MB, Canada
Velocity Field of the McMurdo Shear Zone from Annual Three-Dimensional Ground Penetrating Radar Imaging and Crevasse Matching (233955)
Laura Ray1, Madeleine Jordan1, Steven A Arcone2, Lynn M Kaluzienski3, Peter Ortquist Koons3, James Lever4, Benjamin Walker1 and Gordon S Hamilton5, (1)Dartmouth College, Hanover, NH, United States, (2)Dartmouth College, Thayer School, Hanover, NH, United States, (3)University of Maine, School of Earth and Climate Sciences, Orono, ME, United States, (4)US Army Engineer Research and Developmen, Hanover, NH, United States, (5)University of Maine, Orono, ME, United States
Ice Penetrating Radar Reveals Spatially Variable Features in Basal Channel under the Nansen Ice Shelf, Terra Nova Bay, Antarctica (259261)
Peter L Wray, University of Waterloo, Waterloo, ON, Canada, Christine F Dow, University of Waterloo, Applied Mathematics, Waterloo, ON, Canada, Derek Mueller, Carleton University, Department of Geography and Environmental Studies, Ottawa, ON, Canada, Won Sang Lee, Korea Polar Research Institute, Division of Glacier and Earth Sciences, Incheon, South Korea, Laura Lindzey, University of Washington, Applied Physics Laboratory, Seattle, United States, Jamin Stevens Greenbaum, University of Texas at Austin, University of Texas Institute for Geophysics, Austin, TX, United States and Donald D Blankenship, University of Texas, Institute for Geophysics, Austin, United States
Brine, englacial structure, and basal properties near the terminus of the McMurdo Ice Shelf, Antarctica (259599)
Zoe Courville, Cold Regions Research and Engineering Laboratory, Hanover, NH, United States, Seth W Campbell, U.S. Army Cold Regions Research and Engineering Laboratory, Hanover, United States, Samantha Noelle Sinclair, University of New Hampshire Main Campus, Earth Sciences, Durham, NH, United States and Joel Alexander Wilner, Middlebury College, Middlebury, VT, United States
Winter in Antarctica: dark, cold, windy, and .... wet?? Measurements and modeling of extensive wintertime surface melt (261388)
Peter Kuipers Munneke1, Adrian J Luckman2, Suzanne Louise Bevan2, Ella Gilbert3, Paul Smeets4, Michiel R van den Broeke1, Wenshan Wang5, Charles S Zender6, David W Ashmore7, Bryn P Hubbard8, Andrew Orr3 and John King9, (1)Institute for Marine and Atmospheric Research Utrecht, Utrecht, Netherlands, (2)Swansea University, Glaciology Group, Swansea, United Kingdom, (3)NERC British Antarctic Survey, Cambridge, United Kingdom, (4)Utrecht University, Institute for Marine and Atmospheric Research Utrecht, Utrecht, Netherlands, (5)University of California Irvine, Irvine, CA, United States, (6)Univ California Irvine, Department of Earth System Science, Irvine, United States, (7)University of Liverpool, School of Environmental Sciences, Liverpool, United Kingdom, (8)Aberystwyth University, Department of Geography and Earth Sciences, Aberystwyth, United Kingdom, (9)British Antarctic Survey, Cambridge, United Kingdom
Melt season lengths on Antarctic Peninsula Ice Shelves from passive microwave data (263464)
Andrew Carl Johnson, University of Alaska Fairbanks, Fairbanks, AK, United States, Mark A Fahnestock, University of Alaska Fairbanks, Geophysical Institute, Fairbanks, United States and Regine Hock, University of OSLO, Oslo, Norway
The shape of change: A new method to identify sources of dynamic thickness change (267005)
Adam J Campbell, University of Otago, School of Surveying, Dunedin, New Zealand, Christina L Hulbe, University of Otago, School of Surveying (Dean), Dunedin, New Zealand and Choon-Ki Lee, Korea Polar Research Institute, Division of Glacier and Earth Sciences, Incheon, South Korea
Grounding line processes on the Totten Glacier (270980)
Sue Cook, Antarctic Climate and Ecosystems Cooperative Research Centre, Hobart Tasmania 7001, Australia, Christopher S Watson, University of Tasmania, Surveying and Spatial Sciences, School of Technology, Environments and Design, Hobart, TAS, Australia, Ben Galton-Fenzi, University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, TAS, Australia, Leo E Peters, University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, Australia and Richard Coleman, University of Tasmania, Hobart, Australia
Challenges for understanding Antarctic surface hydrology and ice-shelf stability (276304)
Jonathan Kingslake1, Robin Elizabeth Bell1, Alison F Banwell2, Alexandra Boghosian1, Julian Spergel3 and Luke D Trusel4, (1)Lamont-Doherty Earth Observatory, Palisades, NY, United States, (2)UK Centre for Polar Observation and Modelling, Northumbria University, School of Geography and Natural Sciences, Newcastle upon Tyne, United Kingdom, (3)Lamont -Doherty Earth Observatory, Palisades, NY, United States, (4)Clark Labs, Worcester, United States
Response to Filchner-Ronne Ice Shelf Cavity Warming in a Coupled Ocean-Ice Sheet Model (276698)
Sebastian Goeller, Potsdam, Germany and Ralph Timmermann, AWI, Bremerhaven, Germany
Duality of Ross Ice Shelf systems: crustal boundary, ice sheet processes and ocean circulation from ROSETTA-Ice surveys (284949)
Kirsty J Tinto1, Christine S Siddoway2, Laurence Padman3, Helen Amanda Fricker4, Indrani Das5, David Felton Porter6, Scott R Springer7, Matthew Siegfried8, Fabio Caratori Tontini9, Robin Elizabeth Bell1 and ROSETTA-Ice team, (1)Lamont-Doherty Earth Observatory, Palisades, NY, United States, (2)Colorado College, Geology, Colorado Springs, CO, United States, (3)Earth & Space Research, Corvallis, United States, (4)University of California San Diego, Scripps Institution of Oceanography, San Diego, United States, (5)Lamont -Doherty Earth Observatory, Palisades, NY, United States, (6)Columbia University, Lamont-Doherty Earth Observatory, Palisades, NY, United States, (7)Earth & Space Research, Seattle, WA, United States, (8)Stanford University, Geophysics, Stanford, CA, United States, (9)University of Genoa, Genoa, Italy
On the Formation of Rifts in Ice Shelves (285934)
Roiy Sayag, Ben-Gurion University of the Negev Midreshet, Sde Boker, Israel and Grae Worster, University of Cambridge, Cambridge, United Kingdom
Field Observations and Modeling Results of the McMurdo Shear Zone, Antarctica: Implications on Shear Margin Dynamics and Long- Term Viability of the South Pole Traverse (292412)
Lynn M Kaluzienski, University of Maine, Climate Change Institute, Orono, ME, United States, Peter Ortquist Koons, University of Maine, School of Earth and Climate Sciences, Orono, ME, United States, Ellyn M Enderlin, Boise State University, Department of Geosciences, Boise, ID, United States, Zoe Courville, Cold Regions Research and Engineering Laboratory, Hanover, NH, United States, Seth W Campbell, U.S. Army Cold Regions Research and Engineering Laboratory, Hanover, United States, Steven Arcone, Madeleine Jordan, Dartmouth College, Hanover, NH, United States and Laura Ray, Dartmouth College, Thayer School of Engineering, Hanover, NH, United States

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