PP51B:
Paleoceanography and Paleoclimate at the Western Arctic Margins: Pacific-Arctic and Land-Ocean Interactions and Sea Ice Changes II Posters

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Session ID#: 26143

Session Description:
One of the most striking expressions of climate change in the Arctic is the retreat of summer sea ice in the western Arctic Ocean, attributed largely to the impact of Pacific waters and atmospheric circulation in addition to greenhouse warming. The long-term history of this oceanic/atmospheric system and its interactions with Arctic sea-ice conditions can be addressed by tapping sedimentary records from continental margins and adjacent deep-sea areas of the Arctic Ocean north of the Bering Strait, as well as respective terrestrial paleoclimatic archives. We invite contributions exploring the history of Pacific-Arctic water inflow and atmospheric circulation and the linkages to changes in Arctic environments using marine, terrestrial, and ice-core proxy records. High-resolution studies addressing recent (Holocene) climatic variability on submillennial time scales are encouraged, as well as investigations of longer stratigraphic records providing insights into warm environments of the more distant past (Early Pleistocene to Pliocene).
Primary Convener:  Leonid Polyak, Byrd Polar and Climate Research Center, Ohio State University, Columbus, OH, United States
Conveners:  Masanobu Yamamoto, Hokkaido University, Sapporo, Japan, Seung-il Nam, Korea Polar Research Institute, Incheon, South Korea and Christof Pearce, Stockholm University, Department of Geological Sciences, Stockholm, Sweden
Chairs:  Masanobu Yamamoto, Hokkaido University, Sapporo, Japan and Leonid Polyak, Byrd Polar and Climate Research Center, Columbus, OH, United States
OSPA Liaison:  Christof Pearce, Aarhus University, Department of Geoscience, Aarhus, Denmark

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

1105 Quaternary geochronology [GEOCHRONOLOGY]
1616 Climate variability [GLOBAL CHANGE]
3002 Continental shelf and slope processes [MARINE GEOLOGY AND GEOPHYSICS]
9315 Arctic region [GEOGRAPHIC LOCATION]

Abstracts Submitted to this Session:

Late Quaternary Paleoceanographic Settings in the Central Arctic Ocean as Revealed from the Composition of Coarse Grains on the Alpha-Mendeleev and Lomonosov Ridges (285646)
Evgenia Bazhenova1, Robert F Spielhagen2, Anna Kudryavtseva3, Evgenia Voronovich3, Ruediger H Stein4 and Alexey Krylov5, (1)NIWA, Wellington, New Zealand, (2)Academy of Sciences, Humanities, and Literature, Mainz, Germany, (3)Saint Petersburg State University, Institute of Earth Sciences, Saint Petersburg, Russia, (4)Alfred Wegener Institute, Bremerhaven Frg, Germany, (5)VNIIOkeangeologia, Saint Petersburg, Russia
High-resolution sub-bottom seismic and sediment core records from the Chukchi Abyssal Plain reveal Quaternary glaciation impacts on the western Arctic Ocean (291542)
Young Jin Joe, Korea Polar Research Institute, Incheon, Korea, Republic of (South), Yoon Seokhoon, Cheju National University, Earth and marine sciences, Cheju, South Korea, Seung-il Nam, Korea Polar Research Institute, Incheon, South Korea, Leonid Polyak, Byrd Polar and Climate Research Center, Columbus, OH, United States and Frank Niessen, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany
Size-dependent δ18O and δ13C variations in a planktic foraminiferal Neogloboquadrina pachyderma (sinistral) record from Chukchi Plateau: implications for (sub)surface water conditions in the western Arctic Ocean over the past ~50 ka (247139)
Rujian Wang1, Wenshen Xiao1, Jing Mei1 and Leonid Polyak2, (1)Tongji University, State Key Laboratory of Marine Geology, Shanghai, China, (2)Byrd Polar and Climate Research Center, Columbus, OH, United States
Reconstructing Holocene Summer Sea-Ice Conditions in the Central and Western Arctic Ocean: Morphological Variations and Stable Isotope Composition of Neogloboquadrina pachyderma (248091)
Hirofumi Asahi1, Seung-il Nam2, Ruediger H Stein3, Andreas Mackensen4 and Yong-ju Son2, (1)Korea Polar Research Institute, Incheon, Korea, Republic of (South), (2)Korea Polar Research Institute, Incheon, South Korea, (3)Alfred Wegener Institute, Bremerhaven Frg, Germany, (4)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany
Distribution of pelagic phytoplankton-derived lipid biomarkers in the Northwest Pacific region: insights into their suitability as open-water indicators (248277)
Jong Ku Gal1,2, Jung-Hyun Kim2, Lukas Smik3, Sun Yong Ha2, Simon T. Belt3, Seung-il Nam2 and Kyung-Hoon Shin4, (1)Hanyang University, Seoul, Korea, Republic of (South), (2)Korea Polar Research Institute, Incheon, South Korea, (3)Plymouth University, School of Geography, Earth and Environmental Sciences, Plymouth, United Kingdom, (4)Hanyang University, Department of Marine Sciences and Convergent Technology, Ansan, South Korea
Orbital-scale Central Arctic Ocean Temperature Records from Benthic Foraminiferal δ18O and Ostracode Mg/Ca Ratios (252383)
Katherine Keller, Natural Systems Analysts, Inc, Reston, VA, United States, Thomas M Cronin, U.S. Geological Survey, Florence Bascom Geoscience Center, Reston, United States, Gary S. Dwyer, Division of Earth and Ocean Sciences, Nicholas School of the Environment, Duke University, Durham, NC, United States, Jesse R Farmer, University of Massachusetts Boston, School for the Environment, Boston, MA, United States, Robert K Poirier, Rensselaer Polytechnic Institute, Department of Earth and Environmental Science, Troy, NY, United States and Morgan F Schaller, Rensselaer Polytechnic Institute, Earth and Environmental Sciences, Troy, NY, United States
Paleoceanographic Changes Since the Last Glacial as Revealed by Analysis of Alkenone Organic Biomarkers from the Northwest Pacific (Core LV 63-41-2) (265785)
Pai-Sen Yu1, Chia-Ju Liao2, Min-Te Chen2, Jian-Jun Zou3, Xuefa Shi4, A. A. Bosin5 and Sergey A. Gorbarenko5, (1)TORI Taiwan Ocean Research Institute, Kaohsiung, Taiwan, (2)NTOU National Taiwan Ocean University, Keelung, Taiwan, (3)First Institute of Oceanography, Ministry of Natural Resources, Qingdao, China, (4)First Institute of Oceanography, Ministry of Natural Resources, Key Laboratory of Marine Geology and Metallogeny, Qingdao, China, (5)Pacific Oceanological Institute FEB RAS, Vladivostok, Russia
Chronostratigraphy and paleoenvironmental change in the Makarov Basin of the western Arctic Ocean during the last ~1 Ma (269253)
Kwangkyu Park1, Seung-il Nam2, Boo-Keun Khim3, Gee-Soo Kong4, Michael Schreck5, Andreas Mackensen5 and Frank Niessen5, (1)Pusan National University, Marine Research Institute, Busan, South Korea, (2)Korea Polar Research Institute, Incheon, South Korea, (3)Pusan National University, Department of Oceanography, Busan, Korea, Republic of (South), (4)Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon, South Korea, (5)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany
Deglacial remobilization of permafrost carbon to sediments along the East Siberian Arctic Seas (271328)
Dr. Jannik Martens1,2, Birgit Wild2,3, Lisa Bröder1,4, August Andersson1,2, Christof Pearce5,6, Matt O'Regan6,7, Martin Jakobsson6,7, Tommaso Tesi8,9, Francesco Muschitiello6,10, Martin Sköld11, Igor Peter Semiletov12,13, Oleg Dudarev12,14 and Orjan Gustafsson2,3, (1)Stockholm University, Department of Environmental Science and Analytical Chemistry, Stockholm, Sweden, (2)Stockholm University, Bolin Centre for Climate Research, Stockholm, Sweden, (3)Stockholm University, Department of Environmental Science, Stockholm, Sweden, (4)Vrije Universiteit Amsterdam, Department of Earth Sciences, Amsterdam, Netherlands, (5)Aarhus University, Department of Geoscience, Aarhus, Denmark, (6)Stockholm University, Department of Geological Sciences, Stockholm, Sweden, (7)Bolin Centre for Climate Research, Stockholm, Sweden, (8)CNR Institute for Marine Science, Venice, Italy, (9)Stockholm University, Stockholm, Sweden, (10)Lamont -Doherty Earth Observatory, Palisades, NY, United States, (11)Stockholm University, Department of Mathematics, Stockholm, Sweden, (12)National Research Tomsk Polytechnic University, Tomsk, Russia, (13)University of Alaska Fairbanks, Fairbanks, AK, United States, (14)Pacific Oceanological Institute FEB RAS, Vladivostok, Russia
Geochemical evidences of methane hydrate dissociation in Alaskan Beaufort Margin during Holocene (271880)
Masao Uchida1, Stephan Rella1, Yoshimi Kubota2, Hidetoshi Kumata3, Kanako Mantoku1, Shigeto Nishino4 and Motoyo Itoh4, (1)National Institute for Environmental Studies, Tsukuba, Japan, (2)National Museum of Nature and Science, Tsukuba, Japan, (3)Tokyo University of Pharmacy and Life Sciences, Hachioji, Japan, (4)Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan
Late to middle Pleistocene Arctic glacial history implied from a sedimentary record from the Northwind Ridge (272689)
Linsen Dong1, Yanguang Liu2, Xuefa Shi3 and Aimei Zhu1, (1)the First Institute of Oceanography, State Oceanic Administration, Qingdao, China, (2)First Institute of Oceanography, State Oceanic Administration, Qingdao, China, (3)First Institute of Oceanography, Ministry of Natural Resources, Key Laboratory of Marine Geology and Metallogeny, Qingdao, China
Iceberg and meltwater discharge events in the western Arctic Ocean since MIS 5: a comparison of sediment cores off the East Siberian and Chukchi margins (223314)
Wenshen Xiao1, Rujian Wang1, Taoliang Zhang1, Xiao Duan1 and Leonid Polyak2, (1)Tongji University, State Key Laboratory of Marine Geology, Shanghai, China, (2)Byrd Polar and Climate Research Center, Ohio State University, Columbus, OH, United States
Can we constrain postglacial sedimentation in the western Arctic Ocean by ramped pyrolysis 14C? A case study from the Chukchi-Alaskan margin. (231782)
Kenta Suzuki1, Masanobu Yamamoto1, Brad E Rosenheim2, Takayuki Omori3, Leonid Polyak4 and Seung-il Nam5, (1)Hokkaido University, Sapporo, Japan, (2)University of South Florida, College of Marine Science, St. Petersburg, FL, United States, (3)University of Tokyo, Bunkyo-ku, Japan, (4)Byrd Polar and Climate Research Center, Columbus, OH, United States, (5)Korea Polar Research Institute, Incheon, South Korea

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