PP13D:
Twenty-Five Years of Heinrich Events Research: What We Have Learned So Far About the Past Global Changes II Posters

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Session ID#: 25813

Session Description:
In 1988, Heinrich discovered six iceberg-rafting events from the Dreizack seamount. However, late Bond and Broecker of LDEO placed the findings of Heinrich into a past global change context in 1992 that caught the imaginations of paleo-communities. Since then, search for the impacts of H-events on the ocean and atmospheric circulation across the globe has been intensified. The objective of the session on H-events is to bring together a diverse group of researchers who deal with paleo-proxy records such as ice cores, marine sediments, terrestrial archives and coupled ocean-atmosphere models to discuss advances in understanding the mechanisms of these events. Abstracts are solicited for any topic relevant to the above or other questions relating to H-events: (a) ice cores records from both poles and high altitudes; (b) marine sediment records; (c) terrestrial proxy records of abrupt climate change; and (d) coupled climate models and their performance in simulating H-events.
Primary Convener:  Harunur Rashid, Memorial University of Newfoundland, St John's, NL, Canada
Conveners:  Stephen Obrochta, Akita University, Graduate School of International Resource Science, Akita, Japan, Hartmut Heinrich, BSH Federal Maritime and Hydrographic Agency, Hamburg, Germany and Jerry F McManus, Columbia University, Earth and Environmental Sciences, New York, United States
Chairs:  Jerry F McManus, Lamont-Doherty Earth Observatory, Palisades, United States and Stephen Obrochta, Akita University, Graduate School of International Resource Science, Akita, Japan
OSPA Liaison:  Stephen Obrochta, Akita University, Graduate School of International Resource Science, Akita, Japan

Cross-Listed:
  • A - Atmospheric Sciences
  • C - Cryosphere
  • GC - Global Environmental Change
  • OS - Ocean Sciences
Index Terms:

1605 Abrupt/rapid climate change [GLOBAL CHANGE]
1616 Climate variability [GLOBAL CHANGE]
4926 Glacial [PALEOCEANOGRAPHY]
4928 Global climate models [PALEOCEANOGRAPHY]

Abstracts Submitted to this Session:

Recognizing the Palynological Signal of Heinrich Event H1 (300735)
Irina Delusina, University of California Davis, The Earth and Planetary Sciences, Davis, CA, United States
Key roles of sea ice in inducing contrasting modes of glacial AMOC and climate (301389)
Sam Sherriff-Tadano, Atmosphere and Ocean Research Institute University of Tokyo, Tokyo, Japan and Ayako Abe-Ouchi, AORI, University of Tokyo, Kashiwa, Japan
Abrupt Changes in Bottom Water Benthic Foraminiferal Assemblages during Heinrich Events 1-4 (283981)
Kelly Lazar, Clemson University, Environmental Engineering and Earth Sciences, Clemson, United States, Harunur Rashid, Memorial University of Newfoundland, Earth and Environmental Sciences, St. John's, Canada, Marli Vermooten, Memorial University of Newfoundland Grenfell, Corner Brook, Canada and Dong Mingqiu, Shanghai Ocean University, Hadal Science and Technology (HAST) Research Center, College of Marine Sciences, Shanghai, China
Decadal-scale progression of Dansgaard-Oeschger warming events – Are warmings at the end of Heinrich-Stadials different from others? (284385)
Tobias Erhardt1, Emilie Capron2, Sune Rasmussen3, Simon Schuepbach1, Matthias Bigler1 and Hubertus Fischer4, (1)University of Bern, Bern, Switzerland, (2)British Antarctic Survey, Cambridge, United Kingdom, (3)Center for Ice and Climate, University of Copenhagen, Copenhagen, Denmark, (4)University of Bern, Climate and Environmental Physics and Oeschger Centre for Climate Research, Bern, Switzerland
Wave inhibition by sea ice enables trans-Atlantic ice rafting of debris during Heinrich Events (273383)
Till J.W. Wagner1, Rebecca Dell2, Ian Eisenman3, Ralph F Keeling2, Laurence Padman4 and Jeffrey P Severinghaus3, (1)University of Wisconsin Madison, Department of Atmospheric and Oceanic Sciences, Madison, United States, (2)University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, (3)University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States, (4)Earth & Space Research, Corvallis, United States
Isotopic composition of ice core air reveals abrupt Antarctic warming during and after Heinrich Event 1a (248661)
Jacob Davies Morgan1, Bernhard Bereiter2, Daniel Baggenstos2, Kenji Kawamura3, Sarah Shackleton1 and Jeffrey P Severinghaus4, (1)Scripps Institution of Oceanography, La Jolla, CA, United States, (2)Climate and Environmental Physics and Oeschger Center for Climate Research, University of Bern, Bern, Switzerland, (3)National Institute of Polar Research, Tokyo, Japan, (4)Scripps Institution of Oceanography, La Jolla, United States
Discharge of water and sediment from ice-streams on the southeastern Laurentide Ice Sheet during Heinrich events: timing and magnitude (246213)
Harunur Rashid, Memorial University of Newfoundland, St John's, NL, Canada and David Piper, Bedford Institute of Oceanography, Geological Survey of Canada, Dartmouth, NS, Canada
Southward migrations of tropical rainfall during Heinrich Events: compelling evidence from δ18O of atmospheric O2 (229545)
Alan M Seltzer1, Christo Buizert2, Daniel Baggenstos3, Edward J Brook2, Jinho Ahn4, Ji-Woong Yang5 and Jeffrey P Severinghaus6, (1)Scripps Institution of Oceanography, La Jolla, CA, United States, (2)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States, (3)Climate and Environmental Physics and Oeschger Center for Climate Research, University of Bern, Bern, Switzerland, (4)Seoul National University, Seoul, Korea, Republic of (South), (5)Seoul National University, Seoul, South Korea, (6)Scripps Institution of Oceanography, La Jolla, United States
The impact of MIS-3 climate events at the transition from Neanderthals to modern humans in Europe (215578)
Michael Staubwasser, University of Cologne, Cologne, Germany, Virgil Dragusin, Emil Racovita Institute of Speleology, Bucharest, Romania, Sergey Assonov, IAEA International Atomic Energy Agency, Vienna, Austria, Vasile Ersek, Northumbria University, Geography and Environmental Sciences, Newcastle-Upon-Tyne, United Kingdom, Dirk Hoffmann, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany, Daniel Veres, Romanian Academy, Institute of Speleology, Cluj-Napoca, Romania and Bogdan P. Onac, Babeș-Bolyai University, Geology, Cluj-Napoca, Romania

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