PP014
Ice-sheet variability and behavior through the lens of geologic data and numerical modeling

Session ID#: 161232

Session Description:
Ice sheets are major components of the climate system and play an important role in the organization of that system through their influence on sea level, atmospheric and oceanic circulation, the biosphere, and landscape evolution. Determining the evolution of the size, shape, and volume of past ice sheets provides necessary boundary conditions for deciphering how ice sheets responded to and influenced past climate changes. Evidence of past ice-sheet size and behavior are recorded in the geologic record through the presence of terrestrial deposits and geomorphic features, geochemical tracers, and lacustrine and marine sediments. Numerical models provide insight into the potential mechanisms of past and present ice-sheet change and can provide information not always available through the geologic archive alone, including ice-volume estimates, ice-flow dynamics, and transient ice-sheet reconstructions. This session seeks contributions addressing ice-sheet constraints from both geologic data and modeling studies to recreate past conditions of the global ice sheets. Topics will include, but are not limited to, remote sensing, geochronology, ice volume and sea-level contribution, and ice streams and ice dynamics.
Co-Organized:
  • C - Cryosphere
Index Terms:

0726 Ice sheets [CRYOSPHERE]
0776 Glaciology [CRYOSPHERE]
1616 Climate variability [GLOBAL CHANGE]
1621 Cryospheric change [GLOBAL CHANGE]


Primary Convener:  Aaron M Barth, Rowan University, Glassboro, NJ, United States
Conveners:  Elizabeth Ceperley, University of Wisconsin Madison, Geoscience, Madison, WI, United States and Joshua K Cuzzone, NASA Jet Propulsion Laboratory, Pasadena, CA, United States; University of California Los Angeles, Los Angeles, CA, United States
 
Reconstructing East Antarctic Ice Sheet Dynamics during the Late Miocene using Iceberg-rafted Detritus in ODP Site 1165 (1056774)
Amanda Jade Chen, Wellesley College, Wellesley, MA, United States, Sidney R Hemming, Lamont-Doherty Earth Observatory, Palisades, United States, Trevor Williams, Texas A&M University, International Ocean Discovery Program, College Station, United States and Elizabeth P Davis, Wellesley College, Environmental Studies and Geosciences, Wellesley, United States
 
Outcrop Perspectives on Spatially Variable Retreat of the Marine-terminating southern Cordilleran Ice Sheet (1067853)
Marion McKenzie, University of Virginia, Environmental Sciences, Charlottesville, VA, United States and Lauren Miller Simkins, University of Virginia, Department of Environmental Sciences, Charlottesville, United States
 
Can sedimentation pause marine-ice-sheet retreat over retrograde slopes? A case study on Pine Island Trough (1076081)
John Erich Christian1, Ginny A Catania2, Santiago Munevar Garcia3, Alexander Robel4, Lauren Miller Simkins3 and Leigh A Stearns5, (1)Georgia Institute of Technology, School of Earth and Atmospheric Sciences, Atlanta, GA, United States, (2)University of Texas at Austin, Austin, TX, United States, (3)University of Virginia, Department of Environmental Sciences, Charlottesville, United States, (4)Georgia Institute of Technology Main Campus, Earth and Atmospheric Science, Atlanta, United States, (5)University of Kansas, Department of Geology, Lawrence, KS, United States
 
Glacial Fans as an archive of Ice Sheet Dynamics: A Multi-proxy Investigation of the Northern Cordilleran Ice Sheet during Siku Events using Surveyor Fan Sediments acquired from IODP EXP 341 (1093281)
Deepa Dwyer1, Joseph Stephen Stoner1, Maureen Walczak2, Brendan T Reilly3, Guillaume St-Onge4, Julie Heggdal Velle5, Alan C Mix2 and Stewart Fallon6, (1)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, (2)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States, (3)Scripps Institution of Oceanography, University of California San Diego, La Jolla, United States, (4)Univ Quebec a Rimouski, Rimouski, QC, Canada, (5)Institut des sciences de la mer de Rimouski (ISMER) and GEOTOP, Rimouski, Canada, (6)The Australian National University, Research School of Earth Sciences, Canberra, Australia
 
Quantifying Uncertainty in an Obliquity World: A Bayesian Framework for Plio-Pleistocene Ice Sheet Evolution (1098783)
Stephen Richard Meyers, Univ. of Wisconsin - Madison, Geoscience, Madison, WI, United States, Maureen E Raymo, Columbia University, Lamont-Doherty Earth Observatory, Palisades, United States, Alberto Malinverno, Lamont -Doherty Earth Observatory of Columbia University, Palisades, NY, United States and Lorraine E Lisiecki, University of California Santa Barbara, Earth Science, Santa Barbara, United States
 
When Did the Southeastern Laurentide Ice Margin Really Retreat at the Close of the LGM? (1098905)
Dorothy M Peteet, NASA Goddard Institute for Space Studies, New York, United States; Lamont -Doherty Earth Observatory, Palisades, United States and Dennis V Kent, Rutgers University New Brunswick, EPS, New Brunswick, NJ, United States; Lamont-Doherty Earth Observatory, Columbia University, Palisades, United States
 
Antarctic and Greenland Ice-sheet Contributions to Last Interglacial Global Sea-level: Evidence from Stratigraphic Analysis and U-Th Ages of Fossil Corals from the Bahamas (1109854)
Oana-Alexandra Dumitru1, Blake Dyer2, Jacqueline Austermann3, Michael Robert Sandstrom3, Steven L Goldstein4, William J D'Andrea3, Miranda Cashman3, Roger Creel3 and Maureen E Raymo1, (1)Columbia University, Lamont-Doherty Earth Observatory, Palisades, United States, (2)University of Victoria, Earth and Ocean Sciences, Victoria, BC, Canada, (3)Columbia University, Lamont-Doherty Earth Observatory, Palisades, NY, United States, (4)Lamont-Doherty Earth Observatory, Palisades, United States
 
Deglacial drivers of Patagonian Ice Sheet retreat across the Andean Southern Volcanic Zone. (1112345)
Matias Romero, Universidad Nacional de Córdoba, Centro de Investigaciones en Ciencias de la Tierra (CICTERRA-CONICET), Córdoba, Argentina, Shaun A Marcott, University of Wisconsin-Madison, Department of Geoscience, Madison, WI, United States and Joshua K Cuzzone, University of California Los Angeles, Los Angeles, CA, United States
 
Antarctic Ice Stream Thickening under Pliocene Warmth (1116880)
Martim Mas e Braga1, Richard Selwyn Jones2, Jorge A Bernales3, Jane Lund Andersen4, Ola Fredin5, Mathieu Morlighem6, Alexandria Koester7, Nathaniel A Lifton8, Jon Harbor9, Yusuke Suganuma10, Neil F Glasser11, Irina Rogozhina12 and Arjen P Stroeven1, (1)Stockholm University, Department of Physical Geography, Stockholm, Sweden, (2)Monash University, School of Earth, Atmosphere and Environment, Melbourne, Australia, (3)Institute for Marine and Atmospheric Research Utrecht, Utrecht, Netherlands, (4)Aarhus University, Department of Geoscience, Aarhus C, Denmark, (5)Norwegian University of Science and Technology, Department of Geoscience and Petroleum, Trondheim, Norway, (6)Dartmouth College, Department of Earth Sciences, Hanover, NH, United States, (7)Purdue University, Department of Earth, Atmospheric, and Planetary Sciences, West Lafayette, IN, United States, (8)Purdue University, Department of Earth, Atmospheric, and Planetary Sciences, West Lafayette, United States, (9)Purdue Univ, Department of Earth, Atmospheric, and Planetary Sciences, West Lafayette, IN, United States, (10)Institute of Polar Research, Tokyo, Japan, (11)Aberystwyth University, Department of Geography and Earth Sciences, Aberystwyth, United Kingdom, (12)Norwegian University of Science and Technology, Department of Geography, Trondheim, Norway
 
Identifying pinning point elevation thresholds for Ross Sea ice streams (West Antarctica) over the last deglaciation based on glacial isostatic adjustment and grounding line simulations (1126232)
Jessica Gagliardi1, Sam Kodama1, Tamara Pico1, Casey Vigilia1, Alexander Robel2, Evelyn M Powell3, Slawek M Tulaczyk1 and Terrence Blackburn1, (1)University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, United States, (2)Georgia Institute of Technology Main Campus, Earth and Atmospheric Science, Atlanta, United States, (3)Lamont -Doherty Earth Observatory, Palisades, United States
 
The Role of Glacial Isostatic Adjustment on Cordilleran Ice Stream Stability Over the Last Glacial Cycle (1127336)
Casey Vigilia1, Sam Kodama1, Alexander Robel2 and Tamara Pico3, (1)University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, United States, (2)Georgia Institute of Technology Main Campus, Earth and Atmospheric Science, Atlanta, United States, (3)University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, CA, United States
 
The Influence of Lateral Earth Structure on Inferences of Global Ice Volume During the Last Glacial Maximum (1132107)
Linda Pan1, Glenn A. Milne2, Konstantin Latychev1, Samuel Lukens Lukens Goldberg3, Jacqueline Austermann4, Mark J. Hoggard5 and Jerry X Mitrovica1, (1)Harvard University, Department of Earth and Planetary Sciences, Cambridge, MA, United States, (2)University of Ottawa, Earth and Environmental Sciences, Ottawa, ON, Canada, (3)University of Miami, Rosenstiel School of Marine, Atmospheric, and Earth Science, Miami, United States, (4)Columbia University, Lamont-Doherty Earth Observatory, Palisades, United States, (5)Australian National University, Research School of Earth Sciences, Canberra, Australia
 
Autogenic, Not Orbital, Forcing of Snowball Glaciomarine Sedimentation (1142366)
Adrian Tasistro-Hart, University of California, Santa Barbara, Earth Science, Santa Barbara, United States and Francis Macdonald, University of California, Santa Barbara, Department of Earth Science, Santa Barbara, CA, United States
 
Constraining the amplitude of Antarctic Ice Sheet change during warm intervals of the Pliocene (1145502)
Edward Gasson, University of Exeter, Exeter, EX4, United Kingdom, Caroline H Lear, Cardiff University, School of Earth and Ocean Sciences, Cardiff, United Kingdom, Robert M Deconto, Univ Massachusetts, Amherst, MA, United States, Amy Thomas-Sparkes, Cardiff University, Cardiff, CF24, United Kingdom, Anna Ruth W Halberstadt, University of Massachusetts Amherst, Geosciences Department, Amherst, MA, United States, David Pollard, Pennsylvania State University, Earth and Environmental Systems Institute, University Park, PA, United States, Matt Trevers, University of Bristol, Bristol, BS8, United Kingdom, Antony John Payne, University of Bristol, Bristol, United Kingdom and James Marschalek, Imperial College London, London, United Kingdom
 
Late Holocene Fluctuations of Upsala Glacier, Southern Patagonia (1152793)
Matias Romero1, Maximillian Van Wyk de Vries2,3, Andrew G Jones4, Anastasia Fedotova5, Shanti Bhattacharya Penprase3, Guido Brignone1, Shaun A Marcott6, Andrew D Wickert3, Mark Shapley7, Emi Ito8, Maria Beatrice Magnani5 and Jorge A Strelin1, (1)Universidad Nacional de Córdoba, Centro de Investigaciones en Ciencias de la Tierra (CICTERRA-CONICET), Córdoba, Argentina, (2)University of Liverpool, Liverpool, United Kingdom, (3)University of Minnesota Twin Cities, Department of Earth & Environmental Sciences and Saint Anthony Falls Laboratory, Minneapolis, United States, (4)University of Wisconsin-Madison, Department of Geoscience, Madison, United States, (5)Southern Methodist University, Dallas, United States, (6)University of Wisconsin-Madison, Department of Geoscience, Madison, WI, United States, (7)University of Minnesota, Earth and Environmental Sciences, and the Continental Scientific Drilling and Coring facility, Minneapolis, MN, United States, (8)University of Minnesota Department of Earth & Environmental Sciences and Limnological Research Center, Minneapolis, MN, United States
 
Estimation of Paleo-Extent and Volume of Glaciers in the Baspa Basin, India (1156593)
Nidhiya Jose, Indian Institute of Science, Bangalore, Divecha Centre for Climate Change, Bangalore, India
 
Pliocene Glacial-Interglacial Cyclicity in Sedimentation Offshore the Amundsen Sea, West Antarctica (1170636)
Sandra Passchier1, Claus-Dieter Hillenbrand2, Werner U Ehrmann3, Sidney R Hemming4, Thomas Frederichs5, Olga Libman-Roshal6, Lisbeth Mino-Moreira7 and Ronald Leon7, (1)Montclair State University, Montclair, NJ, United States, (2)British Antarctic Survey, Cambridge, United Kingdom, (3)Inst fuer Geophysik & Geologie, Leipzig, Germany, (4)Lamont-Doherty Earth Observatory, Palisades, United States, (5)University of Bremen, Department of Geosciences, Bremen, Germany, (6)Montclair State University, Department of Earth and Environmental Studies, Montclair, United States, (7)Montclair State University, Montclair, United States
 
Preliminary Results from a 15 kyr-long Sediment Record from Parrot Lake, Dall Island, Southeast Alaska (1173984)
Karlee Prince1, Jason P Briner1, Charlotte Lindqvist2, Elizabeth K Thomas1, Caleb K Walcott1, Flavio Augusto da Silva Coelho2 and Corey Krabbenhoft3, (1)University at Buffalo, Department of Geosciences, Buffalo, United States, (2)University at Buffalo, Department of Biological Sciences, Buffalo, United States, (3)University at Buffalo, College of Arts and Sciences and RENEW Institute, Buffalo, NY, United States
 
Provenance of Iceberg Rafted Detritus Peaks During Termination 1 at Antarctica’s Iceberg Alley Site U1537 (1199198)
Leila Tarabein, Barnard College, Environmental Science Department, New York, United States, Trevor Williams, Lamont Doherty Earth Obs, Palisades, United States, Sidney R Hemming, Lamont-Doherty Earth Observatory, Palisades, United States, Claire E Jasper, Lamont -Doherty Earth Observatory, Palisades, United States, Maya Tessler, Barnard College, New York, United States, Maureen E Raymo, Columbia University, Lamont-Doherty Earth Observatory, Palisades, United States, Michael Weber, University of Bonn, Bonn, Germany and Expedition 382 Science Party