OB24G:
Seafloor Cold Seepage: Interactions and Effects of Hydrocarbon Emission and Methane Hydrates on the Geological and Biological Environments Posters
Session ID#: 85844
Session Description:
Hydrocarbons seepage into the ocean fuels chemosynthetic biological communities at the seafloor, supports the formation of new habitats through long-term precipitation of carbonate hard grounds, and potentially has a regional impact on the chemistry and biology of the overlying water column. There has been a rapid advance in the discovery of these sites, with a new appreciation for the widespread nature of hydrate and methane fueled systems at both active and passive continental margins and the recognition that geological or environmental events, such as earthquakes, submarine landslides, and ocean warming, can alter the release of sequestered methane into the ocean. These discoveries have expanded our understanding of the role and scale of methane-based processes within the earth-ocean-atmosphere system. This session seeks to combine multi-disciplinary research topics to assess the current baseline of cold seepage to the global oceans and its environmental impact. We welcome contributions including, but not limited to, geophysical surveys of the subsurface, regional mapping of bubble streams, analyses of source gases and hydrate and their fate in the water column, investigations of biogeochemical cycles at seep sites, and ecosystem-based studies of seep-driven chemosynthetic environments.
Co-Sponsor(s):
Primary Chair: Davide Oppo, University of Louisiana at Lafayette, School of Geosciences, Lafayette, LA, United States
Co-chairs: Samantha Benton Joye, University of Georgia, Marine Sciences, Athens, GA, United States, Tamara Baumberger, Oregon State University, Corvallis, United States and Amanda W Demopoulos, US Geological Survey, Wetland and Aquatic Research Center, Gainesville, United States
Primary Liaison: Davide Oppo, University of Louisiana at Lafayette, School of Geosciences, Lafayette, LA, United States
Moderators: Davide Oppo, University of Louisiana at Lafayette, School of Geosciences, Lafayette, LA, United States and Tamara Baumberger, Oregon State University, Corvallis, United States
Student Paper Review Liaison: Samantha Benton Joye, Univ Georgia, Department of Marine Sciences, Athens, GA, United States
Abstracts Submitted to this Session:
An Insight into Shallow Gas Hydrates in the Dongsha Area, South China Sea (637303)
Jiangxin Chen1, Bin Liu2, Luis M Pinheiro3, Li Yang2, Shengxuan Liu2, Yongxian Guan2, Haibin Song4, Nengyou Wu1, Huaning Xu5 and Rui Yang5, (1)Qingdao Institute of Marine Geology, Qingdao, China, (2)Guangzhou Marine Geological Survey, China, (3)University of Aveiro, Aveiro, Portugal, (4)Tongji University, Shanghai, China, (5)Qingdao Institute of Marine Geology, China
From the Seafloor to the Surface: In situ Chemical Analysis of Rising Bubbles along the Cascadia Margin (646969)
Anna Michel1, Andrew Stafford Johnson2, Kristen Fauria3, Victoria Preston1, David P Nicholson4, Daniel Hoer5, Peter R Girguis6 and Scott D Wankel7, (1)Woods Hole Oceanographic Institution, Applied Ocean Physics and Engineering, Woods Hole, MA, United States, (2)Woods Hole Oceanographic Institution, Woods Hole, United States, (3)Woods Hole Oceanographic Institution, Woods Hole, CA, United States, (4)Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, MA, United States, (5)Harvard University, United States, (6)Harvard University, Organismic and Evolutionary Biology, Cambridge, MA, United States, (7)Harvard University, Woods Hole, United States
A chemosynthetic ecotone - 'chemotone' - surrounds deep-sea methane seeps (647001)
Oliver Ashford1, Shuzhe Guan1, Dante Capone1,2, Katherine Rigney1,3, Katelynn Rowley1, Erik E Cordes4, Victoria J Orphan5, Sean William Mullin6, Katherine Dawson7, Jorge Cortés8, Greg W. Rouse9, Guillermo Mendoza1 and Lisa A Levin1,10, (1)Scripps Institution of Oceanography, Integrative Oceanography Division, La Jolla, CA, United States, (2)University of California Santa Cruz, Santa Cruz, CA, United States, (3)Carleton College, Northfield, MN, United States, (4)Temple University, Philadelphia, PA, United States, (5)California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, United States, (6)California Institute of Technology, Pasadena, CA, United States, (7)Rutgers University, Environmental Sciences, New Brunswick, United States, (8)Universidad de Costa Rica, Centro de Investigación en Ciencias del Mar y Limnología, San Jose, Costa Rica, (9)University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States, (10)Scripps Institution of Oceanography, Center for Marine Biodiversity and Conservation, La Jolla, CA, United States
Observations and modeling of submarine hydrocarbon seeps within the hydrate stability zone (648393)
Binbin Wang1, Scott A Socolofsky2, Inok Jun3, Mihai Leonte4 and John D Kessler4, (1)University of Missouri, Department of Civil and Environmental Engineering, Columbia, MO, United States, (2)Texas A&M University, Zachry Department of Civil and Environmental Engineering, College Station, United States, (3)Texas A&M University, Zachry Department of Civil Engineering, College Station, TX, United States, (4)University of Rochester, Department of Earth and Environmental Sciences, Rochester, NY, United States
Chemical distribution and range of the Cascadia Margin methane seep bubbles (648466)
Tamara Baumberger, Oregon State University, Corvallis, United States, Camilla Maya Wilkinson, Oregon State University, CIMRS, Newport, OR, United States, Marvin D Lilley, University of Washington, School of Oceanography, Seattle, United States, Eric J Olson, Univ Washington, Seattle, WA, United States, Amanda W Demopoulos, US Geological Survey, Wetland and Aquatic Research Center, Gainesville, United States, Nicole Raineault, Ocean Exploration Trust, Narragansett, United States, Michael Riedel, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, Martin Scherwath, University of Victoria, Ocean Networks Canada, Victoria, BC, Canada and John E Lupton, NOAA/PMEL, Newport, OR, United States
Gas hydrate dissociation during relatively sea level highstands: Evidence from U/Th dating of carbonate from gas hydrate drilling core of the South China Sea (648486)
Dong Feng1, Fang Chen2, Xudong Wang3 and Duofu Chen3, (1)Shanghai Ocean University, Lingang, China, (2)Ministry of Natural Resources, Guangzhou Marine Geological Survey, Guangzhou, China, (3)Shanghai Ocean University, Shanghai, China
Amino acid δ15N identifies mixed nitrogen source utilization in chemosymbiotic mussels (Bathymodiolus childressi) from deep-sea methane seeps along the NE Atlantic Margin (648580)
Natasha L Vokhshoori, University of California Santa Cruz, Ocean Sciences, Santa Cruz, CA, United States, Matthew McCarthy, University of California Santa Cruz, Ocean Sciences Department, Santa Cruz, CA, United States, Hilary G Close, Rosenstiel School of Marine, Atmospheric, and Earth Science, University of Miami, Department of Ocean Sciences, Miami, United States, Amanda W Demopoulos, US Geological Survey, Wetland and Aquatic Research Center, Gainesville, United States and Nancy Prouty, USGS, Santa Cruz, United States
Different Biogeochemical Regimes Structure Faunal Communities in Seep Habitats in the Western Atlantic (651290)
Jill R Bourque, US Geological Survey Wetland and Aquatic Research Center, Gainesville, FL, United States, Amanda W Demopoulos, US Geological Survey, Wetland and Aquatic Research Center, Gainesville, United States, Samantha Benton Joye, Univ Georgia, Department of Marine Sciences, Athens, GA, United States and Jason D Chaytor, USGS Coastal and Marine Science Center Woods Hole, Woods Hole, MA, United States
Ecotones at Methane Seeps: Understanding the seepage sphere of trophic influence for carbonate macrofauna (652814)
Olivia S Pereira1, Jennifer Tran Le1, Jennifer Gonzalez1, Oliver Ashford2, Erik E Cordes3, Victoria J Orphan4, Sean William Mullin5, Katherine Dawson6, Shana Goffredi7, Greg W. Rouse8 and Lisa A Levin1, (1)Scripps Institution of Oceanography, University of California San Diego, La Jolla, United States, (2)Scripps Institution of Oceanography, Integrative Oceanography Division, La Jolla, CA, United States, (3)Temple University, Philadelphia, PA, United States, (4)California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, United States, (5)California Institute of Technology, Pasadena, CA, United States, (6)Rutgers University, Environmental Sciences, New Brunswick, United States, (7)Occidental College, Los Angeles, CA, United States, (8)University of California San Diego, Scripps Institution of Oceanography, La Jolla, United States
Observations from controlled experiments on the dissolution of free-gas bubbles and hydrate-coated bubbles in water (653353)
Alexandra Michelle Padilla, University of New Hampshire, Center for Coastal & Ocean Mapping, School of Marine Science and Ocean Engineering/Joint Hydrographic Center, University of New Hampshire, Durham, NH, United States, William F Waite, U.S. Geological Survey, Woods Hole, MA, United States and Thomas C Weber, University of New Hampshire Main Campus, Mechanical Engineering, Durham, NH, United States
A Multimethod Approach to Study the Variability of a Natural Hydrocarbon Seep and its Connection to the Surface (655085)
Mahdi Razaz, University of Southern Mississippi, School of Ocean Science and Engineering, Stennis Space Center, United States, Daniela Di Iorio, University of Georgia, Department of Marine Sciences, Athens, GA, United States, Binbin Wang, University of Missouri, Department of Civil and Environmental Engineering, Columbia, MO, United States and Samira Daneshgar Asl, University of California Santa Barbara, Geography, Santa Barbara, CA, United States
Manganese and Iron Support Anaerobic Oxidation of Methane at Cold Seeps (655615)
Jennifer S Karolewski1,2, Veronique Oldham3, Anna Michel4, Colleen Hansel5 and Scott D. Wankel5, (1)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (2)Massachusetts Institute of Technology, Cambridge, MA, United States, (3)University of Rhode Island, Graduate School of Oceanography, Narragansett, United States, (4)Woods Hole Oceanographic Institution, Applied Ocean Physics and Engineering, Woods Hole, MA, United States, (5)Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, MA, United States
Presence and succession of cable bacteria at Hydrate Ridge, NE Pacific Ocean (656918)
Claire Andrade1, Cheng Li2 and Clare E Reimers2, (1)Oregon State University, College of Earth, Ocean and Atmospheric Sciences, Corvallis, United States, (2)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States
