C21E:
Records of Post-LGM Antarctic Ice Sheet Contraction II Posters

Submit an Abstract to this Session



Session ID#: 26643

Session Description:
During the LGM, the Antarctic Ice Sheets (AISs) were grounded near the continental-shelf edge. In post-LGM time, the ice sheets retreated and the ice-sheet surface lowered. Ice-sheet contraction is recorded by backstepping grounding zone wedges. In the continental interiors, ice-sheet deflation is recorded by exposure of formerly ice-covered land. Sea-level rise has long been suggested as a driver of AIS retreat but satellite and physical oceanographic measurements demonstrate that melting at the grounding lines in places is related to warm ocean water. Uncertainty concerning the existence and strength of various teleconnections is due to two factors: 1) the laboriousness of acquiring aerially extensive surveys needed to make detailed ice-sheet reconstructions; and 2) the difficulty in achieving accurate dating of marine sediments and of terrestrial exposure surfaces, making comparison of ice-sheet reconstructions across regions tenuous. We welcome both terrestrial and marine field-based studies and numerical modeling of the post-LGM AIS retreat.
Primary Convener:  Philip J Bart, Louisiana State University, Department of Geology and Geophysics, Baton Rouge, United States
Conveners:  Slawek M Tulaczyk, University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, CA, United States and Julia Wellner, University of Houston, Houston, TX, United States
Chairs:  Julia Wellner, University of Houston, Houston, TX, United States, Philip J Bart, Department of Geology and Geophysics, Louisiana State University, Baton Rouge, United States and Slawek M Tulaczyk, University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, United States
OSPA Liaison:  Slawek M Tulaczyk, University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, United States
Co-Organized with:
Cryosphere, Ocean Sciences, and Paleoceanography and Paleoclimatology
Index Terms:

0724 Ice cores [CRYOSPHERE]
0726 Ice sheets [CRYOSPHERE]
1626 Global climate models [GLOBAL CHANGE]
9310 Antarctica [GEOGRAPHIC LOCATION]

Abstracts Submitted to this Session:

WHISPERS Project on the easternmost slope of the Ross Sea (Antarctica): preliminary results. (252472)
Elisabetta Olivo1, Laura De Santis2, Andrea Bergamasco3, Florence Colleoni4, Jennifer A Gales5, Cristian Florindo-Lopez6, Sookwan Kim7, Vedrana Kovacevic1 and Michele Rebesco1, (1)National Institute of Oceanography and Applied Geophysics OGS, Trieste, Italy, (2)Ist Nazionale Oceanografia, Sgonico, Italy, (3)CNR-ISMAR Inst. of Marine Sciences, Bologna, Italy, (4)Euro Mediterranean Centre on Climate Change, Bologna, Italy, (5)NOC, Southampton, United Kingdom, (6)National Oceanography Centre, Southampton, United Kingdom, (7)KOPRI Korea Polar Research Institute, Incheon, Korea, Republic of (South)
The Holocene Minimum of the West Antarctic Ice Sheet: Radiocarbon Model Ages for Subglacial Sediments (261635)
Slawek M Tulaczyk, University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, CA, United States, Nathan Stansell, Northern Illinois University, Department of Earth, Atmosphere and Environment, DeKalb, United States, Prof. Reed P Scherer, PhD, Northern Illinois Univ, De Kalb, United States and Ross D Powell, Northern Illinois Univ., Geology and Environmental Geosciences, De Kalb, IL, United States
Preserved Crevasse Casts in the Whales Deep Basin, eastern Ross Sea (287428)
Philip J Bart, Louisiana State University, Department of Geology and Geophysics, Baton Rouge, United States and Slawek M Tulaczyk, University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, United States
Glacial-interglacial cycles in detrital sediment supply to the Amundsen Sea: Implications for West Antarctic Ice Sheet dynamics during the Late Pleistocene (289163)
Patric Simoes Pereira1, Tina van de Flierdt1, Claus-Dieter Hillenbrand2, Sidney R Hemming3 and Gerhard Kuhn4, (1)Imperial College London, London, United Kingdom, (2)British Antarctic Survey, Cambridge, United Kingdom, (3)Columbia University, Department of Earth and Environmental Sciences, New York, United States, (4)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany
Exploring changes in vertical ice extent along the margin of the East Antarctic Ice Sheet in western Dronning Maud Land – initial results of the MAGIC-DML collaboration (237318)
Nathaniel A Lifton1,2, Jennifer C Newall3,4, Ola Fredin5,6, Neil F Glasser7, Derek Fabel8, Irina Rogozhina9,10, Jorge Bernales11, Matthias Prange9, Sarah Sams3, Olaf Eisen12, Clas Hättestrand4,13, Jon Harbor4,14 and Arjen P Stroeven4,13, (1)Purdue University, Department of Earth, Atmospheric, and Planetary Sciences, West Lafayette, United States, (2)Purdue University, Department of Physics and Astronomy, West Lafayette, IN, United States, (3)Purdue University, Department of Earth, Atmospheric, and Planetary Sciences, West Lafayette, IN, United States, (4)Stockholm University, Department of Physical Geography, Stockholm, Sweden, (5)Geological Survey of Norway, Trondheim, Norway, (6)Norwegian University of Science and Technology, Department of Geoscience and Petroleum, Trondheim, Norway, (7)Aberystwyth University, Department of Geography and Earth Sciences, Aberystwyth, United Kingdom, (8)Scottish Universities Environmental Research Center, East Kilbride, United Kingdom, (9)MARUM - Center for Marine Environmental Sciences, University of Bremen, Geosystem modelling, Bremen, Germany, (10)GFZ - German Research Centre For Geosciences, Helmholtz Centre, Potsdam, Germany, (11)GFZ - German Research Centre for Geosciences, Helmholtz Centre, Potsdam, Germany, (12)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (13)Stockholm University, Bolin Centre for Climate Research, Stockholm, Sweden, (14)Purdue University Global, West Lafayette, IN, United States
Nano-scale investigations on clay minerals during the Holocene climate optimum; Larsen Ice Shelf, Antarctica (268121)
Jaewoo Jung1, Kyu-Cheul Yoo2, Kiho Yang3, Jae IL Lee2, Ho Il Yoon2, Chung Yeon Hwang4, Christina Subt5, Brad E Rosenheim6, Eugene W Domack7 and Jinwook Kim8, (1)Yonsei University, Seoul, Korea, Republic of (South), (2)KOPRI Korea Polar Research Institute, Incheon, Korea, Republic of (South), (3)Pusan National University, Institute for Future Earth, Busan, Korea, Republic of (South), (4)Korea Polar Research Institute, Incheon, South Korea, (5)University of South Florida St. Petersburg, St Petersburg, FL, United States, (6)USF, South Florida, United States, (7)Colgate University, Geology, Hamilton, NY, United States, (8)Yonsei University, Seoul, South Korea
Subglacial Landforms and Their Implications for Paleo Ice Flow Near Dibble Glacier, East Antarctica (234748)
Frank Oliver Nitsche, Lamont-Doherty Earth Observatory, Palisades, NY, United States and Ricardo Correia, University of Aveiro, Aveiro, Portugal
A Detailed Geophysical Investigation of the Grounding of Henry Ice Rise, with Implications for Holocene Ice-Sheet Extent. (253723)
Martin Wearing, University of Edinburgh, Edinburgh, EH9, United Kingdom and Jonathan Kingslake, Lamont-Doherty Earth Observatory, Palisades, NY, United States
Temperature under the Tongue: A paleotemperature record of the Drygalksi Ice Tongue with improved chronology of ice retreat (278763)
Cristina Subt, University of South Florida Tampa, Tampa, FL, United States, Brad E Rosenheim, University of South Florida, St Petersburg, FL, United States, Jae IL Lee, KOPRI Korea Polar Research Institute, Incheon, Korea, Republic of (South), Kyu-Cheul Yoo, Korea Polar Research Institute, Incheon, South Korea, Dr. Imogen Mireille Browne, MSc, PhD, Binghamton University, Department of Earth Sciences, Binghamton, NY, United States and Dr. Amelia Shevenell, Ph.D., University College London, London, United Kingdom
Integrating terrestrial and marine records of the LGM in McMurdo Sound, Antarctica: implications for grounded ice expansion, ice flow, and deglaciation of the Ross Sea Embayment (252041)
Andrew James Christ, Boston University, Boston, United States and David R Marchant, Boston University, Earth and Environment, Boston, MA, United States
A Record of Holocene Paleoclimate Evolution from Robertson Bay, Victoria Land, Antarctica (291571)
Olivia Truax1,2, Christina R Riesselman2, Gary S Wilson3, Rebecca L Parker4, Kyu-Cheul Yoo5, Jae Il Lee5, Richard H Levy6 and Robert M Mckay7, (1)Juneau Icefield Research Program, Juneau, United States, (2)University of Otago, Departments of Geology and Marine Science, Dunedin, New Zealand, (3)University of Otago, Department of Marine Science, Dunedin, New Zealand, (4)University of Exeter, Exeter, United Kingdom, (5)Korea Polar Research Institute, Incheon, South Korea, (6)GNS Science, Lower Hutt, New Zealand, (7)Victoria University of Wellington, Antarctic Research Centre, Wellington, New Zealand
Marine evidence of a deconvolving Antarctic Ice Sheet during post-LGM retreat of the Ross Sea sector (232537)
Lindsay O Prothro1, Yusuke Yokoyama2, Lauren M Simkins3, John B Anderson1, Wojciech Majewski4, Masako Yamane5 and Naohiko Ohkouchi6, (1)Rice University, Department of Earth Science, Houston, TX, United States, (2)The University of Tokyo, Atmosphere and Ocean Research Institute, Kashiwa, Japan, (3)Rice University, Department of Earth, Environment and Planetary Sciences, Houston, TX, United States, (4)Institute of Paleobiology, Polish Academy of Sciences, Warszawa, Poland, (5)AORI, The University of Tokyo, Kashiwa-Shi, Chiba, Japan, (6)JAMSTEC, Yokosuka, Japan
New details about the LGM extent and subsequent retreat of the West Antarctic Ice Sheet from the easternmost Amundsen Sea Embayment shelf (231238)
Johann P P Klages1, Claus-Dieter Hillenbrand2, Gerhard Kuhn3, James A Smith4, Alastair GC Graham5, Frank Oliver Nitsche6, Thomas Frederichs7, Jan Erik Arndt8, Catalina Gebhardt8, Zindler Robin8, Gabriele Uenzelmann-Neben9, Karsten Gohl10, Patrycja Jernas11, Lukas Wacker12 and PS104 Shipboard Scientific Party, (1)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Marine Geology, Bremerhaven, Germany, (2)British Antarctic Survey, Cambridge, United Kingdom, (3)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research (AWI), Bremerhaven, Germany, (4)NERC British Antarctic Survey, Cambridge, United Kingdom, (5)Cardiff University, Cardiff, United Kingdom, (6)Lamont-Doherty Earth Observatory, Palisades, NY, United States, (7)University of Bremen, Department of Geosciences, Bremen, Germany, (8)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Marine Geosciences, Bremerhaven, Germany, (9)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Geosciences, Bremerhaven, Germany, (10)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research, Geophysics, Bremerhaven, Germany, (11)University of Tromsø, Department of Geology, Tromsø, Norway, (12)ETH Swiss Federal Institute of Technology Zurich, Laboratory for Ion Beam Physics, Department of Physics, Zurich, Switzerland

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