OS41A:
Ocean Gas Plume Science: Hydrocarbon Transport in the Geo-, Hydro-, Atmo-spheres II Posters

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Session ID#: 16261

Session Description:
It is estimated that approximately 30% of total CH4 emissions are a result of both natural and anthropogenic sources on the seafloor (Ciais et al.  2014). However, these emissions are not well characterized and observations are limited to relatively short timescales in a few select, heavily instrumented, regions (e.g., Barnes and Tunnicliffe 2008). Additionally, upward transport pathways and the fate of emitted CH4 from these sources is poorly constrained resulting in substantial uncertainty in models of natural CH4 injection and carbon cycling in the ocean and atmosphere (Stocker et al. 2013). This session seeks contributions focused on quantifying fundamental processes of hydrocarbon emissions, transport, and cycling in the geosphere, hydrosphere, and atmosphere. Results of field, laboratory, and numerical modeling investigations are welcomed and those integrating observational scales (e.g. linking bubble processes with plume detection and regional geological controls) or differentiating natural and anthropogenic emissions are encouraged.
Primary Convener:  Alex Barnard, University of Houston, Houston, TX, United States
Convener:  Hiroshi Fukuoka, Niigata University, Research Institute for Natural Hazards and Disaster Recovery, Niigata, Japan
Chairs:  Alex Barnard, University of Houston, Houston, TX, United States and Hiroshi Fukuoka, Niigata University, Research Institute for Natural Hazards and Disaster Recovery, Niigata, Japan
OSPA Liaison:  Alex Barnard, University of Houston, Houston, TX, United States
Index Terms:

3004 Gas and hydrate systems [MARINE GEOLOGY AND GEOPHYSICS]
3045 Seafloor morphology, geology, and geophysics [MARINE GEOLOGY AND GEOPHYSICS]
8010 Fractures and faults [STRUCTURAL GEOLOGY]
9810 New fields (not classifiable under other headings) [GENERAL OR MISCELLANEOUS]

Abstracts Submitted to this Session:

Numerous Bubble Plumes Mapped and New Seeps Characterized on the Cascadia Margin (139091)
Robert W Embley1, Susan G Merle2, Nicole Raineault3, Tamara Baumberger4, Sarah Seabrook5, H. P. Johnson6, Anne M Trehu7, John E Lupton8, Andrew Thurber5, Marta E Torres7, Stephen R Hammond9, Evan A Solomon10 and Marie Salmi6, (1)PhD, Newport OR, Newport, OR, United States, (2)Oregon State University, Cooperative Institute for Marine Ecosystem and Resource Studies, Newport, United States, (3)Ocean Exploration Trust, Narragansett, RI, United States, (4)NOAA/PMEL & Oregon State University, Newport, United States, (5)Oregon State University, CEOAS, Corvallis, OR, United States, (6)University of Washington, School of Oceanography, Seattle, WA, United States, (7)Oregon State Univ, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, (8)NOAA/PMEL, Newport, OR, United States, (9)NOAA Office of Ocean Exploration and Research, Portland, OR, United States, (10)University of Washington, School of Oceanography, Seattle, United States
Water Column Methane Bubble Stream Data Analysis and Visualization from a Survey of the U.S. Cascadia Continental Margin (160350)
Susan G Merle1, Robert W Embley2, Nicole Raineault3, H. P. Johnson4, Erica Sampaga4, Tamara Baumberger5 and Tai-Kwan Andy Lau6, (1)Oregon State University, Cooperative Institute for Marine Ecosystem and Resource Studies, Newport, United States, (2)Oregon State University, CIMRS, Corvallis, OR, United States, (3)Ocean Exploration Trust, Narragansett, RI, United States, (4)University of Washington Seattle Campus, School of Oceanography, Seattle, WA, United States, (5)NOAA Pacific Marine Environmental Laboratory, Newport, Oregon, United States, (6)Oregon State University, CIMRS, Newport, OR, United States
Passive acoustic records of two vigorous bubble-plume methane seeps on the Oregon continental margin (139448)
Robert P Dziak1, Haru Matsumoto2, Susan G Merle3, Robert W Embley2, Tamara Baumberger4 and Stephen R Hammond5, (1)NOAA Newport, Newport, OR, United States, (2)Oregon State University, CIMRS, Corvallis, OR, United States, (3)Oregon State University CIMERS Program / NOAA PMEL Earth Ocean Interactions Program, Newport, OR, United States, (4)Oregon State University, Corvallis, United States, (5)NOAA Office of Ocean Exploration and Research, Portland, OR, United States
Bubble composition of natural gas seeps discovered along the Cascadia Continental Margin (150833)
Tamara Baumberger1, Susan G Merle2, Robert W Embley3, Sarah Seabrook4, Nicole Raineault5, Marvin D Lilley6, Leigh J Evans7, Sharon L Walker8 and John E Lupton7, (1)NOAA/PMEL & Oregon State University, Newport, United States, (2)Oregon State University, Cooperative Institute for Marine Ecosystem and Resource Studies, Newport, United States, (3)PhD, Newport OR, Newport, OR, United States, (4)Oregon State University, CEOAS, Corvallis, OR, United States, (5)Ocean Exploration Trust, Narragansett, RI, United States, (6)University of Washington, School of Oceanography, Seattle, United States, (7)NOAA/PMEL, Newport, OR, United States, (8)NOAA Seattle, Seattle, WA, United States
E/V Nautilus Mapping and ROV Dives Reveal Hundreds of Vents along the West Coast of the United States (187517)
Renato Kane1, Nicole Raineault1, Robert W Embley2, Susan G Merle3, Peter R Girguis4, Onni Irish5, Megan Lubetkin6, Christopher R German7, Lisa A Levin8, Marie-Helene Cormier9, Chris Caldow10, Ryan Freedman10 and Lindsay Gee11, (1)Ocean Exploration Trust, Narragansett, RI, United States, (2)Oregon State University, CIMRS, Corvallis, OR, United States, (3)Oregon State University, Cooperative Institute for Marine Ecosystem and Resource Studies, Newport, United States, (4)Harvard University, Organismic and Evolutionary Biology, Cambridge, MA, United States, (5)Center for Coastal and Ocean Mapping Joint Hydrographic Center, Durham, NH, United States, (6)Bates College, Lewiston, ME, United States, (7)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (8)University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, (9)University of Rhode Island Narragansett Bay, Narragansett, RI, United States, (10)NOAA National Ocean Service, Channel Islands National Marine Sanctuary, Santa Barbara, CA, United States, (11)Acoustic Imaging, Noosa, Australia
Reconnaissance of gas plumes offshore Sado Island (199334)
Hiroshi Fukuoka, Niigata University, Research Institute for Natural Hazards and Disaster Recovery, Niigata, Japan, Chiharu Aoyama, Tokyo University of Marine Science and Technology, Tokyo, Japan, Hiroaki Watanabe, Kyushu University, Faculty of Engineering, Fukuoka, Japan, Hiroyuki Komatsu, Niigata University, Faculty of Engineering, Niigata, Japan and Hideo Tajima, Niigata University, Graduate School of Science and Technology, Niigata, Japan
Geological timing and duration of methane seepage in different sedimentary and tectonic settings in the Lower Congo Basin (187074)
Stefan Wenau, MARUM - University of Bremen, Bremen, Germany and Volkhard Spiess, University of Bremen, Faculty of Geosciences, Bremen, Germany

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