OS11C:
Advances in Monitoring and Modeling of Subsea Permafrost Posters


Submit an Abstract to this Session


Session ID#: 48725

Session Description:
Rise in relative sea level since the late Pleistocene has submerged permafrost-bearing coastal zones in the Arctic and subjected them to temperature induced degradation. The submerged relict subsea permafrost is climatically unstable and has the potential to release methane gas into the atmosphere due to its stored organic carbon and destabilization of any associated gas hydrates. Knowledge of the extent of subsea permafrost and the processes affecting its degradation are important for climate change predictions and planning engineering activities in the Arctic. Recent modeling studies and observations indicate that our understanding of subsea permafrost is incomplete. This session seeks current contributions to our understanding of subsea permafrost systems, associated gas hydrate deposits, and greenhouse gases in shallow arctic waters. This session invites contributions from all techniques including numerical models, observations using remote sensing or geophysical techniques, measurements of gas concentrations, seabed morphology, paleoclimate, and climatic projections including permafrost degradation.
Primary Convener:  Dallas Sherman, Frontier Geosciences, British Columbia, Canada, R&D, Vancover, Canada
Conveners:  Jennifer Frederick, Sandia National Laboratories, Albuquerque, United States and Benjamin W Abbott, Brigham Young University, Department of Plant and Wildlife Sciences, Provo, United States
Primary Liaison:  Dallas Sherman, IGPP/SIO/UCSD, San Diego, United States
Chairs:  Benjamin W Abbott, Brigham Young University, Department of Plant and Wildlife Sciences, Provo, United States, Jennifer Frederick, Sandia National Laboratories, Albuquerque, United States and Dallas Sherman, IGPP/SIO/UCSD, San Diego, United States
OSPA Liaison:  Dallas Sherman, IGPP/SIO/UCSD, San Diego, United States

Cross-Listed:
  • C - Cryosphere
Index Terms:

0702 Permafrost [CRYOSPHERE]
3004 Gas and hydrate systems [MARINE GEOLOGY AND GEOPHYSICS]
3305 Climate change and variability [ATMOSPHERIC PROCESSES]

Abstracts Submitted to this Session:

What Can Measurements Near the Sea Surface Tell Us About Subsea Permafrost Methane Emissions? (Invited) (355703)
Brett F Thornton1, John Prytherch2, Marc C. Geibel3, Kristian Andersson1, Ian M Brooks4, Michael K H Tjernstrom2, Christoph Humborg5, Dominic Salisbury4 and Patrick M Crill3, (1)Stockholm University, Department of Geological Sciences, Stockholm, Sweden, (2)Stockholm University, Department of Meteorology, Stockholm, Sweden, (3)Stockholm University, Stockholm, Sweden, (4)University of Leeds, Leeds, United Kingdom, (5)Stockholm University, Baltic Sea Centre, Stockholm, Sweden
Modelling submarine permafrost extent and development at the circum-Arctic scale (Invited) (409261)
Sebastian Westermann, University of Oslo, Department of Geosciences, Oslo, Norway, Michael Angelopolous, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Potsdam, Potsdam, Germany, Thomas Schneider von Deimling, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Potsdam, Permafrost Research, Potsdam, Germany, Frederieke Miesner, Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, Potsdam, Germany, Mikhail Grigoriev, Melnikov Permafrost Institute SB RAS, Yakutsk, Russia, Bennet Juhls, Institute for Space Sciences, Department of Earth Sciences, Freie Universität Berlin, Carl-Heinrich-Becker-Weg 6–10, Berlin, Germany, Hugues Lantuit, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research, Permafrost Research Section, Potsdam, Germany and Paul Overduin, Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, Permafrost Research Section, Potsdam, Germany
Expert Assessment of Organic Carbon Stocks and Vulnerability in Subsea Permafrost (442793)
Sayedeh Sara Sayedi, Brigham Young University, Provo, UT, United States, Benjamin Abbott, Brigham Young University, Department of Plant and Wildlife Sciences, Provo, UT, United States, Jennifer M Frederick, Sandia National Laboratories, Albuquerque, NM, United States, Brett Thornton, Stockholm University, Department of Geological Sciences, Stockholm, Sweden, Stockholm, Sweden, Jorien Vonk, Vrije Universiteit, Amsterdam, Netherlands, Amsterdam, Netherlands, Paul Overduin, Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, Permafrost Research Section, Potsdam, Germany, Tingjun Zhang, Key Laboratory of West China's Environment (DOE), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, CHINA, Lanzhou, China, Elchin E Jafarov, Woodwell Climate Research Center, Falmouth, United States, Kevin M Schaefer, National Snow and Ice Data Center, Cooperative Institute for Research in the Environmental Sciences, University of Colorado at Boulder, Boulder, Colorado, U.S.A, Boulder, United States and Subsea Permafrost Working Group, A working group of the Permafrost Carbon Network, Alaska, United States

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