OS33C:
Seafloor Hydrocarbon Seepage and Venting: The Contributions and Impacts to the Hydrosphere, Atmosphere, and Seep Habitat Biosphere Posters


Submit an Abstract to this Session


Session ID#: 46072

Session Description:
Hydrocarbons escaping from the seafloor can have profound impacts on the marine environment. This session aims to collect examples of hydrocarbon seepage in any form including methane from gas hydrate fields or oil from thermogenic hydrocarbon resource fields, for areas from coastal, nearshore to deep continental slopes, from fast changing geographic regions like the Arctic to continental margins. Recent and ongoing programs in seafloor mapping reveal the vast diversity of (in)active seeps either as bubble streams in the water column or high backscatter intensity from carbonates. Repeat measurements or continuous in-situ observations from ocean observatory networks exhibit the variation and overall dynamics of these systems. We further aim to include the fate of the hydrocarbons as they are consumed by biological processes or get absorbed in the ocean and/or escape into the atmosphere from shallow-water seeps. Potential energy resources and anthropogenic sources like blowouts are included in this multi-disciplinary session.
Primary Convener:  Martin Scherwath, University of Victoria, Ocean Networks Canada, Victoria, BC, Canada
Conveners:  Tamara Baumberger, University of Bergen, Bergen, Norway; NOAA Pacific Marine Environmental Laboratory, Newport, Oregon, United States, Ira Leifer, Bubbleology Research International, Goleta, United States and Hiroaki Watanabe, Kyushu University, Faculty of Engineering Sciences, Fukuoka, Japan
Primary Liaison:  Martin Scherwath, University of Victoria, Ocean Networks Canada, Victoria, BC, Canada
Chairs:  Martin Scherwath, University of Victoria, Ocean Networks Canada, Victoria, BC, Canada, Tamara Baumberger, University of Bergen, Bergen, Norway, Ira Leifer, Bubbleology Research International, Goleta, United States and Hiroaki Watanabe, Kyushu University, Faculty of Engineering Sciences, Fukuoka, Japan
OSPA Liaison:  Martin Scherwath, University of Victoria, Ocean Networks Canada, Victoria, BC, Canada
Index Terms:

3002 Continental shelf and slope processes [MARINE GEOLOGY AND GEOPHYSICS]
3004 Gas and hydrate systems [MARINE GEOLOGY AND GEOPHYSICS]
3045 Seafloor morphology, geology, and geophysics [MARINE GEOLOGY AND GEOPHYSICS]
3050 Ocean observatories and experiments [MARINE GEOLOGY AND GEOPHYSICS]

Abstracts Submitted to this Session:

Characterization of Recently Located Methane Seeps on the Cascadia Margin (419901)
Tamara Baumberger1, Susan G Merle2, Camilla Maya Wilkinson3, Nathaniel J Buck4, Kevin K Roe5, Sarah Seabrook6, Rebecca Crawford1, Robert W. Embley7, David A Butterfield5, Joseph A Resing8, Marvin D Lilley9, Nicole Raineault10 and John E Lupton11, (1)Oregon State University, Corvallis, United States, (2)Oregon State University, Cooperative Institute for Marine Ecosystem and Resource Studies, Newport, United States, (3)Oregon State University, CIMRS, Newport, OR, United States, (4)NOAA/PMEL, Joint Institute for the Study of the Atmosphere and the Ocean, Seattle, WA, United States, (5)University of Washington, Cooperative Institute for Climate, Ocean & Ecosystem Studies, Seattle, United States, (6)Oregon State University, CEOAS, Corvallis, OR, United States, (7)Oregon State University, CIMRS Program / NOAA PMEL Earth Ocean Interactions Program, Newport, OR, United States, (8)Joint Institute for the Study of the Atmosphere and Ocean, and NOAA/PMEL, Seattle, WA, United States, (9)University of Washington, School of Oceanography, Seattle, United States, (10)Ocean Exploration Trust, Narragansett, United States, (11)NOAA/PMEL, Newport, OR, United States
Accoustic characters of Methane Plume and Methane Density in water culum (371643)
Hayato Kashiwa, Tokyo University of Marine Science and Technology, Tokyo, Japan
Observation of gas plume at long and short distances by Weighing fish finder and Multi beam echo sounder (372357)
Momoka Yamamura, Tokyo University of Marine Science and Technology, Tokyo, Japan
Observation of the quantity of methane plumes and volume backscattering strength of Umitaka Spur in offshore Joetsu over the years. (372085)
Hideaki Okazaki, Tokyo University of Marine Science and Technology, Tokyo, Japan
Environment assessment on methane plumes using CH4 concentration measurement (372152)
Ryoto Ohama, Tokyo University of Marine Science and Technology, Tokyo, Japan
High Resolution Simulations of Oil and Gas Blowouts (433563)
Nico Wienders, Florida State University, Tallahassee, FL, United States, William K Dewar, Florida State University, EOAS, Tallahassee, FL, United States and Jean-Michel Campin, M.I.T./EAPS, Cambridge, United States
Dissolved Methane Distributions and Air-sea Flux from Hydrocarbon Seeps in the Lintou Promontory Seep Field, Northern South Sea (385973)
Pengfei Di, South China Sea Institute of Oceanology, Guangzhou, China, Dong Feng, Shanghai Ocean University, Lingang, China, Duofu Chen, Shanghai Ocean University, Shanghai, China and Ian R MacDonald, Florida State University, Tallahassee, United States
Large-scale gas flux estimation from random ship surveys of tidally controlled dynamic bubble emissions - an example from Cascadia (360338)
Michael Riedel1, Martin Scherwath2, Stan E Dosso3, Miriam Roemer4, Martin Heesemann2 and Mario Veloso1, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (2)University of Victoria, Ocean Networks Canada, Victoria, BC, Canada, (3)University of Victoria, Department of Earth and Ocean Sciences, Victoria, BC, Canada, (4)Marum and University of Bremen, Bremen, Germany
An Expanded Inventory of Methane Seeps on the US Atlantic Margin (418375)
Maleen Kidiwela, Mississippi State University, Mississippi State, MS, United States and Adam D Skarke, Mississippi State University, Department of Geosciences, Mississippi State, MS, United States
Expanded U.S. Atlantic Margin Seep Inventory Yields Insight into Methane Dynamics (448220)
Adam D Skarke, Mississippi State University, Department of Geosciences, Mississippi State, MS, United States, Carolyn D Ruppel, U.S. Geological Survey, Woods Hole Coastal and Marine Science Center, Woods Hole, United States, Maleen Kidiwela, Mississippi State University, Mississippi State, MS, United States, Wayne E. Baldwin, USGS, Coastal and Marine Science Center Woods Hole, Woods Hole, United States and William W Danforth, US Geological Survey, Woods Hole Coastal and Marine Science Center, Woods Hole, MA, United States
Timing of enhanced seepage throughout the past 50 ka from the Gulf of Mexico (352077)
Dong Feng, SCSIO South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China, Harry H Roberts, Louisiana State University, Department of Oceanography & Coastal Sciences, Baton Rouge, United States and Duofu Chen, Shanghai Ocean University, Shanghai, China
Global modeling of seafloor methanogenesis using machine-learning predicted inputs to well-known deterministic models (374977)
Taylor Runyan Lee1, Warren T Wood1, Benjamin J Phrampus1, Jason Dale2 and John Yu3, (1)US Naval Research Laboratory, Ocean Sciences Division, Washington, DC, United States, (2)US Naval Research Lab, Geosciences Division, Stennis Space Center, MS, United States, (3)ASEE Student Apprenticeship, US Naval Research Laboratory, Stennis Space Center, United States
Timing Methane Migration in a Tectonic Active Margin (403286)
Saulwood Lin1, Wei-Cheng Wang2, Lan-Feng Fan2, Kai-Li Lien2 and I-Chih Hsieh3, (1)NTU National Taiwan University, Institute of Oceanography, Taipei, Taiwan, (2)IONTU Institute of Oceanography National Taiwan University, Taipei, Taiwan, (3)NTU National Taiwan University, Taipei, Taiwan
Optimization of Hydrocarbon Seep Sampling Strategies through Integration of Geophysical and Geological Data with Real-Time Offshore Geochemical Analyses (461005)
Pablo García del Real1, Elías Kassabji1, Jayme McBee1, Jamshid Jim Gharib2 and Samuel Hulme1, (1)Fugro Consultants, Inc. Houston, Houston, TX, United States, (2)Fugro, Houston, TX, United States

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