MG52A:
Hydrocarbon Seepage as a Conduit Connecting Deep Subsurface Sediments, Shallow Sediments, the Water Column, and Atmosphere I


Session ID#: 11527

Session Description:
Cold seeps are broadly distributed along active and passive continental margins. At these seeps, hydrocarbons migrate from shallow or ultra-deep reservoirs through fault networks that penetrate sediment packages, releasing hydrocarbons from the seabed through slow, diffuse seeps as well as high flow vents. Hydrocarbons are transformed biologically within the sediments during transport and after release into the water column. Hydrocarbon exposure affects patterns of microbial community structure and activity in sediments and the water column. Additionally, these fluxes also can promote physical mixing, potentially altering nutrient and material fluxes through the water column. Water column processes serve as the final biological filter than can consume hydrocarbons ranging from simple gases (e.g., methane) to petroleum (e.g. alkanes and polycyclic aromatic hydrocarbons), and prevent them from reaching the sea surface and atmosphere. Nonetheless, the patterns, rates and regulation of microbial hydrocarbon oxidation in sediments and the water column remain poorly constrained. This session will highlight recent advances in hydrocarbon dynamics at cold seeps, including the geological, physical, biological, and environmental factors that regulate the fate of hydrocarbons in oceanic environments. This session will target an interdisciplinary audience to provide a holistic understanding of hydrocarbon cycling in sediments and waters across diverse systems.
Primary Chair:  Samantha Benton Joye, Univ Georgia, Department of Marine Sciences, Athens, GA, United States
Chairs:  Joseph Peter Montoya, Georgia Inst Technology, Atlanta, GA, United States, Richard N Peterson, Coastal Carolina University, Coastal and Marine Systems Science, Conway, SC, United States and Ajit Subramaniam, Gordon and Betty Moore Found, Palo Alto, CA, United States
Moderators:  Samantha Benton Joye, University of Georgia, Athens, GA, United States and Richard N Peterson, Coastal Carolina University, Coastal and Marine Systems Science, Conway, SC, United States
Student Paper Review Liaison:  Ajit Subramaniam, Columbia University of New York, LDEO, Palisades, NY, United States
Index Terms:

4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4811 Chemosynthesis [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4825 Geochemistry [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4840 Microbiology and microbial ecology [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Co-Sponsor(s):
  • B - Biogeochemistry and Nutrients
  • MM - Microbiology and Molecular Biology

Abstracts Submitted to this Session:

MG52A-01
Complex Hydrocarbon Seepages Along a Short Segment of the North Anatolian Fault (Sea of Marmara, Turkey). (87030)
Livio Ruffine, Claire Croguennec, Jean-Pierre Donval, Emmanuel Rinnert, Yoan Germain, Laurent Bignon, Carla Scalabrin, Helene Ondreas, Anne-Sophie Alix, Ludovic Legoix, Sylvain Bermell and Louis Géli, IFREMER, Plouzané, France
MG52A-02
Differential methane oxidation activity and microbial community composition at cold seeps in the Arctic off western Svalbard (91303)
Friederike Grundger1, Mette M. Svenning2, Helge Niemann1,3, Anna Silyakova1, Pavel Serov1, Wei Li Hong1, Gunter Wegener4,5, Giuliana Panieri1 and JoLynn Carroll1,6, (1)The Arctic University of Norway, Centre for Arctic Gas Hydrate, Environment and Climate, Tromsø, Norway, (2)The Arctic University of Norway, Department of Arctic and Marine Biology, Tromsø, Norway, (3)University of Basel, Department of Environmental Sciences, Basel, Switzerland, (4)MARUM Center for Marine Environmental Research, University Bremen, Germany, (5)Max Planck Institute for Marine Microbiology, Bremen, Germany, (6)Fram Centre for Climate and the Environment, Tromsø, Norway
MG52A-03
Oceanographic Setting Dominates Methane Transport Through the Water Column in the Shallow Area West of Prins Karls Forland, Arctic Ocean (91003)
Anna Silyakova1, Pär Jansson1, Pavel Serov1, Carolyn Alice Graves2, Helge Niemann1,3, Friederike Grundger1, Bénédicte Ferre1 and Jurgen Mienert1, (1)University of Tromsø, Centre for Arctic Gas Hydrates, Environment and Climate (CAGE), Tromsø, Norway, (2)University of Southampton, United Kingdom, (3)University of Basel, Department of Environmental Sciences, Basel, Switzerland
MG52A-04
Rhythms of Methane Emission: Long-term Observations on Mud-volcano Eruptions (87468)
Dirk de Beer, Max Planck Institute for Marine Microbiology, Bremen, Germany, Antje Boetius, Max Planck Institute for Marine Microbiology, HGF-MPG Group for Deep Sea Ecology and Technology, Bremen, Germany, Christopher R German, WHOI, Woods Hole, United States, Karine Olu, Ifremer, Laboratoire Environnement Profond, Plousane, France and Tomas Feseker, Marum, Germany
MG52A-05
Chasing Sources and Transports of Methane Plumes in the Northern Gulf of Mexico Using In Situ Sensors on Untethered Landers (93546)
Christopher S Martens1, Howard Mendlovitz1, Harvey Seim1, Laura Lapham2, Cedric Magen3, Samantha Benton Joye4, Ian R MacDonald5, Vernon L Asper6 and Arne R Diercks7, (1)University of North Carolina at Chapel Hill, Marine Sciences, Chapel Hill, NC, United States, (2)University of Maryland Center for Environmental Science Appalachian Laboratory, Frostburg, MD, United States, (3)The University of Maryland Center for Environmental Science, Cambridge, MD, United States, (4)University of Georgia, Athens, GA, United States, (5)Florida State University, Tallahassee, FL, United States, (6)University of Southern Mississippi, Stennis Space Center, MS, United States, (7)The University of Southern Mississippi, Division of Marine Science, Stennis Space Center, MS, United States
MG52A-06
Succession of Hydrocarbon Degradation and Microbial Diversity during a Simulated Petroleum Seepage in Caspian Sea Sediments (91187)
Sonakshi Mishra1, Marion Stagars2, Peggy Wefers1, Mark Schmidt1, Katrin Knittel2, Martin Krueger3, Ira Leifer4 and Tina Treude5, (1)Geomar Helmholtz Center for Ocean Research, Marine Biogeochemistry, Kiel, Germany, (2)Max-Planck-Institute for Marine Microbiology, Bremen, Germany, (3)BRG, Hannover, Germany, (4)Bubbleology Research International, Solvang, CA, United States, (5)University of California Los Angeles, Department of Earth, Planetary and Space Sciences, Los Angeles, CA, United States
MG52A-07
Sedimentation of oil-derived material to the seabed is an unrecognized fate for oil derived from natural seepage. (92289)
Samantha Benton Joye, Univ Georgia, Department of Marine Sciences, Athens, GA, United States
MG52A-08
Marine Aggregates – Natural and Oiled Material Transport in the Deep Gulf of Mexico (93831)
Arne R Diercks, The University of Southern Mississippi, Division of Marine Science, Stennis Space Center, MS, United States, Vernon L Asper, Univ Southern Mississippi, Stennis Space Center, MS, United States, Clayton Dike, University of Southern Mississippi, Marine Science, Stennis Space Center, MS, United States, Kai Ziervogel, UNC Chapel Hill, Chapel Hill, NC, United States and Uta Passow, University of California Santa Barbara, Santa Barbara, CA, United States
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