PP031
Southern Ocean climate and Antarctic Ice Sheet dynamics

Session ID#: 75773

Session Description:
This session aims to bring together scientists from recent expeditions of the International Ocean Discovery Program (IODP) to decipher past Southern Ocean and Antarctic Ice Sheet dynamics. Our goal is to advance knowledge and understanding of Pliocene to Pleistocene atmosphere-ocean-cryosphere interactions in the Southern Hemisphere, especially under warmer conditions than today, and to use this understanding to gauge the behavior of these interactions in the future. Contributions are welcome, but not limited to, studies of the ‘cold-water’ route through the Drake Passage along the Antarctic Circumpolar Current, the ‘warm-water’ route through the Agulhas Current, and on the interaction of these currents and associated movements of oceanographic and atmospheric fronts with the ice-mass loss history from the Antarctic continent.
Index Terms:

0726 Ice sheets [CRYOSPHERE]
0732 Icebergs [CRYOSPHERE]
4901 Abrupt/rapid climate change [PALEOCEANOGRAPHY]
4910 Astronomical forcing [PALEOCEANOGRAPHY]


Primary Convener:  Michael E Weber, University of Bonn, Bonn, Germany
Conveners:  Gisela Winckler, Columbia University, Lamont-Doherty Earth Observatory, New York, NY, United States, Sidney R Hemming, Lamont-Doherty Earth Observ, Palisades, NY, United States and Trevor Williams, Texas A&M University, International Ocean Discovery Program, College Station, TX, United States
Primary Liaison:  Michael E Weber, University of Bonn, Bonn, Germany
 
Tracing water masses in high-resolution Pliocene Southern Ocean simulations (489039)
Anna Ruth W Halberstadt, Neil Pravin Patel and Rob DeConto, University of Massachusetts Amherst, Amherst, MA, United States
 
IODP Expedition 382 (Iceberg Alley) – goals and first results (489694)
Michael E Weber, University of Bonn, Steinmann Institute, Bonn, Germany, Maureen E Raymo, Lamont-Doherty Earth Obs., New York, NY, United States, Trevor Williams, Lamont Doherty Earth Obs, Palisades, NY, United States and IODP Expedition 382 Scientists
 
Holocene to recent sediment transport on the Sabrina Coast: Grain-size analysis via laser diffraction (495040)
Richard Rivera, CUNY Medgar Evers College, Brooklyn, NY, United States, Kara Jayne Vadman, University of South Florida, College of Marine Science, St Petersburg, FL, United States, Amelia Shevenell, University of South Florida, Tampa, FL, United States, Amy Leventer, Colgate University, Geology, Hamilton, NY, United States, Brad E Rosenheim, University of South Florida St. Petersburg, College of Marine Science, St Petersburg, FL, United States, Sean P S Gulick, The University of Texas at Austin, Department of Geological Sciences, Austin, TX, United States and Bruce A Huber, Lamont-Doherty Earth Observatory, Palisades, NY, United States
 
Intermediate Water Dynamics at the Indian-Atlantic Ocean Gateway During the Pliocene Inferred from Opal Accumulation and Diatom Assemblages at IODP Site U1475 (518831)
Jason James Coenen, Northern Illinois University, DeKalb, IL, United States, Justin P Dodd, Northern Illinois University, Geology and Environmental Geosciences, DeKalb, IL, United States, Jens Gruetzner, Alfred-Wegener-Institut, Bremerhaven, Germany, Ian R Hall, Cardiff University, School of Earth and Ocean Sciences, Cardiff, CF24, United Kingdom, Leah J LeVay, Integrated Ocean Drilling Program, College Station, TX, United States, Nambiyathodi Lathika, National Centre for Antarctic and Ocean Research, Ice Core Laboratory, Goa, India, Francisco J Jimenez, University of Granada, Granada, Spain, Sidney R Hemming, Lamont-Doherty Earth Observ, Palisades, NY, United States, Reed P Scherer, Northern Illinois Univ, De Kalb, IL, United States and the IODP Expedition 361 Scientists
 
High biogenic components of the glacial sediments in the Central Basin of the Ross Sea: New perspective and interpretation (529874)
Boo-Keun Khim1, Ester Colizza2, Jae Il Lee3, Federico Giglio4 and Sangbeom Ha1, (1)Pusan National University, Busan, Korea, Republic of (South), (2)Dip. di Matematica e Geoscienze, Universita' degli Studi di Trieste, Trieste, Italy, (3)Korea Polar Research Institute, Incheon, South Korea, (4)Institute of Marine Sciences, Bologna, Italy
 
Reviewed stratigraphy of the southern Scotia Sea basins (Antarctica): preliminary results on core-log-seismic integration from IODP Expedition 382 (529888)
Lara F. Perez, British Antarctic Survey, Cambridge, United Kingdom, Yasmina Martos, NASA Goddard Space Flight Center, Greenbelt, MD, United States, Marga García, IACT-CSIC, Armilla, Spain, Michael Weber, University of Bonn, Bonn, Germany, Maureen E Raymo, Lamont-Doherty Earth Obs., New York, NY, United States, Trevor Williams, Texas A&M University, College Station, NY, United States, Fernando Bohoyo, Instituto Geológico y Minero de España, Dpto. de Investigación y Prospectiva Geocientífica, Tres Cantos, Spain and IODP Expedition 382 Scientists
 
Antarctic Ice Sheet variability – climate coupling through the Mid-Bruhnes Event recorded in Southern Ocean deep sea sediments off Victoria Land (East Antarctic) (531833)
Senyan Nie, Rujian Wang, Wenshen Xiao and Shengbin Ye, Tongji University, State Key Laboratory of Marine Geology, Shanghai, China
 
Icebergs at the Agulhas Plateau through the Pleistocene: Accumulation, Provenance, and Interpretation of Ice-Rafted Debris (531866)
Aidan Starr1, Ian R Hall1, Sidney R Hemming2, Grant R Bigg3, Stephen Barker4, Jeroen van der Lubbe5, Alejandra Cartagena Sierra6, Melissa A Berke6, Jens Gruetzner7, Francisco J Jimenez8, Gregor Knorr9, Leah J LeVay10,11 and Nambiyathodi Lathika12, (1)Cardiff University, School of Earth and Ocean Sciences, Cardiff, CF24, United Kingdom, (2)Lamont-Doherty Earth Observ, Palisades, NY, United States, (3)Univ Sheffield, Sheffield, United Kingdom, (4)Cardiff University, Cardiff, United Kingdom, (5)Palo Alto, CA, United States, (6)University of Notre Dame, Notre Dame, IN, United States, (7)Alfred-Wegener-Institut, Bremerhaven, Germany, (8)University of Granada, Granada, Spain, (9)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (10)Integrated Ocean Drilling Program, College Station, TX, United States, (11)Texas A&M University College Station, International Ocean Discovery Program, College Station, TX, United States, (12)National Centre for Antarctic and Ocean Research, Ice Core Laboratory, Goa, India
 
Ross Sea West Antarctic Ice Sheet History in the Late Cenozoic: Initial sediment core results from IODP Expedition 374 (532556)
Robert M Mckay, Victoria University of Wellington, Wellington, New Zealand, Laura De Santis, Ist Nazionale Oceanografia, Sgonico, Italy, Denise K Kulhanek, T, International Ocean Discovery Program, College Station, TX, United States and IODP Expedition 374 Scientific Party
 
Latitudinal Migrations of the Subtropical Front at the Agulhas Plateau across the Mid-Pleistocene Transition (535967)
Melissa A Berke1, Alejandra Cartagena Sierra1, Isla S. Castañeda2, Rebecca S Robinson3, Basia Marcks3, Ian R Hall4, Aidan Starr4, Marcel van der Meer5, Sidney R Hemming6 and Expedition 361 Scientists7, (1)University of Notre Dame, Notre Dame, IN, United States, (2)UMass Amherst-Geosciences, Amherst, MA, United States, (3)University of Rhode Island, Narragansett, RI, United States, (4)Cardiff University, School of Earth and Ocean Sciences, Cardiff, CF24, United Kingdom, (5)NIOZ Royal Netherlands Institute for Sea Research, Department of Marine Microbiology and Biogeochemistry, 't Horntje, Netherlands, (6)Lamont-Doherty Earth Observ, Palisades, NY, United States, (7)Texas A&M University, International Ocean Discovery Program, College Station, United States
 
Surface and deep-water variability on the southern Agulhas Plateau: Interhemispheric links over the past 2 Ma (Invited) (536367)
Ian R Hall1, Aidan Starr1, Sidney R Hemming2, Stephen Barker3, Jeroen van der Lubbe4, Alejandra Cartagena Sierra5, Melissa A Berke5, Jens Gruetzner6, Francisco José Javier Jiménez-Espejo7, Gregor Knorr8, Leah LeVay9, Nambiyathodi Lathika10, Rebecca S Robinson11 and Expedition 361 Scientists12, (1)Cardiff University, School of Earth and Ocean Sciences, Cardiff, CF24, United Kingdom, (2)Lamont-Doherty Earth Observ, Palisades, NY, United States, (3)Cardiff University, Cardiff, United Kingdom, (4)Cardiff University, School of Earth and Ocean Sciences, Cardiff, United Kingdom, (5)University of Notre Dame, Notre Dame, IN, United States, (6)Alfred-Wegener-Institut, Bremerhaven, Germany, (7)JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, (8)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (9)Texas A&M University, International Ocean Discovery Program, College Station, TX, United States, (10)National Centre for Antarctic and Ocean Research, Ice Core Laboratory, Goa, India, (11)University of Rhode Island, Narragansett, RI, United States, (12)Texas A&M University, International Ocean Discovery Program, College Station, United States
 
A physical record of Antarctic Bottom Water (AABW) outflow in the Ross Sea from the late Pliocene (3.3 Ma) through present (549194)
Natalia Varela, Virginia Tech, Geosciences, Blacksburg, VA, United States, Brian Romans, Virginia Tech, Geosciences, Blacksburg, United States, Molly O'Rourke Patterson, Binghamton University, Binghamton, NY, United States, Justin P Dodd, Northern Illinois University, Geology and Environmental Geosciences, DeKalb, IL, United States, Robert M Mckay, Victoria University of Wgtn, Wellington, New Zealand, Laura De Santis, Ist Nazionale Oceanografia, Sgonico, Italy, Denise K Kulhanek, T, International Ocean Discovery Program, College Station, TX, United States and IODP Expedition 374 Scientists
 
Early Pleistocene Multiproxy Record From Dove Basin, Scotia Sea: New Data to Evaluate the 41kyr World Problem (549368)
Mallory Mintz, Lamont-Doherty Earth Observatory, New York, NY, United States, Claire E Jasper, Lamont Doherty Earth Observatory, Palisades, NY, United States, Iván Hernández-Almeida, ETH Zurich, Zurich, Switzerland, Jonathan Warnock, Beloit College, Beloit, WI, United States, Anna Glueder, Oregon State University, College of Earth Ocean and Atmospheric Sciences, Corvallis, OR, United States, Brendan T Reilly, CEOAS, Corvallis, OR, United States, Maureen E Raymo, Lamont-Doherty Earth Obs., New York, NY, United States, Trevor Williams, Lamont Doherty Earth Obs, Palisades, NY, United States, Michael Weber, University of Bonn, Bonn, Germany and The IODP Expedition 382 Scientists
 
Provenance of iceberg-rafted detritus during glacial terminations of the last 500 ka at Site U1537, IODP Expedition 382 (549985)
Trevor Williams, Texas A&M University, International Ocean Discovery Program, College Station, TX, United States, Sidney R Hemming, Lamont-Doherty Earth Observ, Palisades, NY, United States, Michael Weber, University of Bonn, Bonn, Germany, Maureen E Raymo, Lamont-Doherty Earth Obs., New York, NY, United States, Connor Watkins, Indiana University Purdue University Indianapolis, Earth Sciences, Indianapolis, United States, Claire E Jasper, Lamont Doherty Earth Observatory, Palisades, NY, United States, Stefanie A Brachfeld, Montclair State University, Earth and Environmental Studies, Montclair, NJ, United States, Suzanne OConnell, Wesleyan Univ, Middletown, CT, United States, Ian Bailey, University of Exeter, Exeter, EX4, United Kingdom, Marga García, IACT-CSIC, Armilla, Spain, Lara F. Perez, British Antarctic Survey, Cambridge, United Kingdom and IODP Expedition 382 Scientists
 
Quaternary Paleoceanography of the Ross Sea, Antarctica based on Benthic and Planktic Foraminifera (Site U1523) (554375)
Julia Seidenstein, University of Massachusetts Amherst, Amherst, MA, United States, R Mark Leckie, Univ Massachusetts, Amherst, MA, United States, Robert M Mckay, Victoria University of Wgtn, Wellington, New Zealand, Laura De Santis, Ist Nazionale Oceanografia, Sgonico, Italy, Denise K Kulhanek, T, International Ocean Discovery Program, College Station, TX, United States and IODP Expedition 374 Scientists
 
Sedimentary perspectives of Pleistocene ocean circulation and climate change from the southernmost Chilean continental margin (566825)
Christopher M Moy, University of Otago, Dunedin, New Zealand, Helge W Arz, Leibniz Institute for Baltic Sea Research, Rostock, Germany, Jesse R Farmer, Princeton University, Princeton, NJ, United States, Julia Gottschalk, Lamont -Doherty Earth Observatory, Palisades, United States, Shinya Iwasaki, JAMSTEC Japan Agency for Marine-Earth Science and Technology, Research and Development Center for Global Change JAMSTEC, Kanagawa, Japan, Vera Lawson, Rutgers University New Brunswick, Department of Earth and Planetary Sciences, New Brunswick, NJ, United States, Lester Lembke-Jene, AWI, Bremerhaven, Germany, Li Lo, National Taiwan University, Taipei, Taiwan, Elisabeth Michel, LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France, Inah SEO, Seoul National University, Seoul, Korea, Republic of (South), Sui Wan, Chinese Academy of Sciences, Institute of Oceanology, Guangzhou, China, Frank Lamy, AWI Bremerhaven, Bremerhaven, Germany, Gisela Winckler, Columbia University, Lamont-Doherty Earth Observatory, New York, NY, United States, Carlos A Alvarez Zarikian, Integrated Ocean Drilling Program, College Station, TX, United States, Nicole Foucher McColl, Universidad Nacional Andrés Bello, Geology Dept., Viña del Mar, Chile and Expedition 383 Scientists, Texas A&M University, College Station, United States
 
A circumpolar view of Subantarctic iron fertilization over the last ice age (573680)
Alfredo Martinez-Garcia1, Simone Moretti1, Alexandra Auderset1, Anja S Studer1, Ralf Schiebel2, Elisabeth Michel3, Frank Lamy4, Gisela Winckler5, Sam Jaccard6, Ralf Tiedemann7, Daniel Mikhail Sigman8 and Gerald Hermann Haug9, (1)Max Planck Institute for Chemistry, Mainz, Germany, (2)Max Planck Institute for Chemistry, Climate Geochemistry Department, Mainz, Germany, (3)LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France, (4)AWI Bremerhaven, Bremerhaven, Germany, (5)Columbia University, Lamont-Doherty Earth Observatory, New York, NY, United States, (6)University of Bern, Bern, Switzerland, (7)Alfred-Wegener-Institute, Bremerhaven, Germany, (8)Princeton University, Princeton, NJ, United States, (9)ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland
 
Investigating the Dynamics of the Pacific Antarctic Circumpolar Current – Initial Results from International Ocean Discovery Program Expedition 383 (DYNAPACC) (Invited) (575799)
Frank Lamy, AWI Bremerhaven, Bremerhaven, Germany, Gisela Winckler, Columbia University, Lamont-Doherty Earth Observatory, New York, NY, United States, Carlos A Alvarez Zarikian, Integrated Ocean Drilling Program, College Station, TX, United States, Expedition 383 Scientists, Texas A&M University, College Station, United States and Expedition 383 Scientists
 
Early Pleistocene Record of Antarctic Ice Discharge Events Quantified by Ice-Rafted Debris at Site U1537, IODP Expedition 382 (583489)
Claire E Jasper1, Blake Dyer2, Maureen E Raymo2, Marga García3, Trevor Williams4, Brendan T Reilly5, Michael Weber6 and the IODP Expedition 382 Scientists, (1)Lamont Doherty Earth Observatory, Palisades, NY, United States, (2)Lamont-Doherty Earth Obs., New York, NY, United States, (3)IACT-CSIC, Armilla, Spain, (4)Lamont Doherty Earth Obs, Palisades, NY, United States, (5)CEOAS, Corvallis, OR, United States, (6)University of Bonn, Bonn, Germany
 
Evidence for Rainfall Variations Through the Last Two Glacial Cycles in the Agulhas Current Region of Southern Africa (587218)
Chiza N Mwinde1, Daniel P Babin2, Allison M Franzese3, Steven L Goldstein1, Ian R Hall4, Sidney R Hemming1, Sophia K Hines2, Kaoru Kubota5 and Margit H Simon6, (1)Lamont -Doherty Earth Observatory, Palisades, NY, United States, (2)Lamont -Doherty Earth Observatory, Palisades, United States, (3)Hostos Community College, Department of Natural Sciences, New York, NY, United States, (4)Cardiff University, School of Earth and Ocean Sciences, Cardiff, CF24, United Kingdom, (5)Isotope Geochemistry Group, Kochi Institute for Core Sample Research, JAMSTEC, Tokyo, Japan, (6)NORCE, Norwegian Research Centre and Bjerknes Centre for Climate Research, Bergen, Norway
 
Southern Ocean Water Column Hydrography during the mid-Brunhes Event (587745)
Emily Ann Kaiser, University of Delaware, College of Earth, Ocean, and Environment, Newark, DE, United States, Louisa Bradtmiller, Macalester College, Department of Environmental Studies, Saint Paul, MN, United States and Katharina Billups, University of Delaware, Lewes, United States
 
West Antarctic Ice Sheet and Ocean Dynamics in the Outer Amundsen Sea: Initial Results from IODP Expedition 379 (601764)
Julia S Wellner, University of Houston, Houston, TX, United States, Karsten Gohl, Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany, Adam Klaus, Texas A&M University, International Ocean Discovery Program, College Station, TX, United States and EXPEDITION 379 SCIENTIFIC PARTY
 
Early diagenetic processes in sub-Antarctic deep marine sediments and implications for deciphering primary palaeoceanographic records (IODP Expedition 382) (606374)
Bridget K Lee, University of California Riverside, Riverside, CA, United States, Marcus Gutjahr, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, Osamu Seki, Hokkaido University, Sapporo, Japan, Timothy W Lyons, University of California Riverside, Department of Earth and Planetary Sciences, Riverside, CA, United States, Michael Weber, University of Bonn, Bonn, Germany, Maureen E Raymo, Lamont-Doherty Earth Obs., New York, NY, United States, Trevor Williams, Lamont Doherty Earth Obs, Palisades, NY, United States and IODP Expedition 382 Scientists
 
Magneto-biostratigraphic integration of Neogene sequences from the subantarctic Pacific Ocean: Initial results from IODP Exp. 383 (624658)
Christina R Riesselman, University of Otago, Departments of Geology and Marine Science, Dunedin, New Zealand, Anieke Brombacher, National Oceanographic Centre, School of Ocean & Earth Science, Southampton, United Kingdom, Oliver Esper, Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research (AWI), Marine Geology, 27568 Bremerhaven, Germany, Alexandre de Souza, Federal University of Rio de Janeiro, Department of Geology, Rio De Janeiro, Brazil, Elisa Malinverno, University of Milano-Bicocca, Department of Earth Sciences, Milan, Italy, Jennifer L Middleton, Lamont Doherty Earth Observatory, Palisades, NY, United States, Ana Christina Ravelo, University of California-Santa Cruz, Santa Cruz, CA, United States, Mariem Saavedra, University of Birmingham, School of Geography, Earth and Environmental Sciences, Birmingham, United Kingdom, Raj K. Singh, Indian Institute of Technology Bhubaneshwar, School of Earth, Ocean and Climate Sciences, Aragul, Jatni, India, Igor Venancio, Center for Weather Forecasting and Climate Studies (CPTEC), National Institute for Space Research (INPE), Cachoeira Paulista, Brazil, Joseph Stephen Stoner, Oregon State University, College of Earth, Ocean and Atmospheric Sciences, Corvallis, OR, United States, Xiangyu Zhao, NIPR National Institute of Polar Research, Tokyo, Japan, Frank Lamy, AWI Bremerhaven, Bremerhaven, Germany, Gisela Winckler, Columbia University, Lamont-Doherty Earth Observatory, New York, NY, United States, Carlos A Alvarez Zarikian, Integrated Ocean Drilling Program, College Station, TX, United States and Expedition 383 Scientists, Texas A&M University, College Station, United States