OS005
Cold seep methane dynamics - geological drivers and biogeochemical impacts.

Session ID#: 161214

Session Description:
Vast amounts of methane are stored in the global ocean as gas hydrate. Gas hydrates are way-stations for methane and larger alkanes (ethane, propane, butane) as these gases migrate from subsurface reservoirs through surficial sediments and into the water column. The slow release of methane from geologic reservoirs at cold seeps creates distinct geomorphologies, supports chemosynthetic communities, and modifies interstitial and water column biochemistry. The impact of cold seeps on the surrounding environment are complex, highly dynamic, and respond rapidly to external perturbations.

 

As such, numerous data gaps challenge our understanding of their governing processes and interaction with the surrounding marine environment. This multidisciplinary session seeks contributions advancing our understanding of hydrocarbon cold seep processes from the subsurface to the water column. We welcome contributions on active and fossil cold seep systems on topics including, but not limited to, geologic controls of seepage, subsurface fluid migration dynamics, biogeochemical cycling, chemosynthetic ecosystems, authigenic carbonate geochemistry, bubble transport, and seep detection/distribution. Results from field, laboratory, theoretical, and numerical simulation studies are welcome.

Index Terms:

0428 Carbon cycling [BIOGEOSCIENCES]
0448 Geomicrobiology [BIOGEOSCIENCES]
4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4811 Chemosynthesis [OCEANOGRAPHY: CHEMICAL]

Primary Convener:  Samantha Benton Joye, University of Georgia, Marine Sciences, Athens, GA, United States
Conveners:  Davide Oppo, University of Louisiana at Lafayette, Lafayette, LA, United States, Sunita R Shah Walter, University of Delaware, School of Marine Science and Policy, Newark, DE, United States and Adam D Skarke, Mississippi State University, Department of Geosciences, Mississippi State, MS, United States
 
Evidence for Methane Seepage in South Atlantic from the Occurrence of Authigenic Gypsum and Framboidal Pyrite in Deep-sea Sediments (1041370)
Rafaela Dantas1, Muhammad Bin Hassan2, Francisco William Cruz Sr.3 and Luigi Jovane2, (1)University of Sao Paulo, Institute of Geosciences, Sao Paulo, United States, (2)University of Sao Paulo, Oceanographic Institute, Sao Paulo, Brazil, (3)University of Sao Paulo, Institute of Geosciences, Sao Paulo, Brazil
 
Sediment loading triggered gas and fluid expulsions during the last 130 ka: Evidence from Gulf of Mexico continental slope (1050045)
Dong Feng1, Xudong Wang2, Davide Oppo3, Maoyu Wang4, Tian-Yu Chen5, Harry H Roberts6 and Duofu Chen2, (1)Shanghai Ocean University, Lingang, China, (2)Shanghai Ocean University, Shanghai, China, (3)University of Louisiana at Lafayette, Lafayette, LA, United States, (4)Nanjing University, School of Earth Sciences and Engineering, Nanjing, China, (5)Nanjing University, Nanjing, China, (6)Louisiana State University, Baton Rouge, LA, United States
 
Diving Deeper Into Methane Seep Distributions Along the Cascadia Convergent Margin, USA (1050999)
Jane Rudebusch1, Nancy Prouty2, Janet Tilden Watt2, James E Conrad2, Jenna C Hill2 and Jared Kluesner2, (1)San Francisco State University, San Francisco, United States, (2)U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, United States
 
Large Pockmark fields point to extensive past fluid expulsion in the Gippsland Basin (SE Australia) (1056144)
Juliet Aralu, Houston, TX, UNITED STATES, Davide Oppo, University of Louisiana at Lafayette, Lafayette, LA, United States and Tiago M. Alves, Cardiff University, 3D Seismic Lab, School of Earth and Ocean Sciences, Cardiff, United Kingdom
 
Archives of short-term fluid flow dynamics and possible influence of human activities at methane seeps: Evidence from high-resolution element geochemistry of chemosynthetic bivalve shells (1086950)
Xudong Wang1, Steffen Kiel2, Shanggui Gong1 and Dong Feng3, (1)Shanghai Ocean University, Shanghai, China, (2)Naturhistoriska Riksmuseet, Department of Palaeobiology, Stockholm, Sweden, (3)Shanghai Ocean University, Lingang, China
 
Individual Benthic Foraminifera Analysis and its Use in Reconstructing Methane Seepage: the Case of Woolsey Mound, Gulf of Mexico (1091236)
Gracie Lynn Babineaux1, Davide Oppo1, Kaustubh Thirumalai2, Giuliana Panieri3, Julie N Richey4 and Leonardo Macelloni5, (1)University of Louisiana at Lafayette, Lafayette, LA, United States, (2)University of Arizona, Department of Geosciences, Tucson, AZ, United States, (3)University of Troms, Troms, Norway, (4)USGS, St. Petersburg, FL, United States, (5)University of Southern Mississippi, Stennis Space Center, United States
 
Diverse Seafloor Depressions offshore Aotearoa New Zealand – Relict Seeps or Geomorphological Anomalies? (1096543)
Jess Irene Tsahai Hillman1, Sally Watson2, Katherine L Maier2, Fynn Warnke3,4, Ingo Andreas Pecher5, Bryan William Davy6, Jasper Hoffmann7 and Suzanne Bull1, (1)GNS Science, Lower Hutt, New Zealand, (2)National Institute of Water and Atmospheric Research, Wellington, New Zealand, (3)University of Bremen, Bremen, Germany, (4)University of Auckland, Auckland, New Zealand, (5)Texas A&M University Corpus Christi, Corpus Christi, United States, (6)GNS Science-Institute of Geological and Nuclear Sciences Ltd, Lower Hutt, New Zealand, (7)Alfred Wegener Institute Helmholtz-Wadden Sea Station Sylt, List, Germany
 
Molybdenum isotope compositions of authigenic carbonates from methane seeps (1099021)
Zice Jia1, Yu Hu2, Shanggui Gong2, Xudong Wang2, Duofu Chen2, Dong Feng2 and Jie Li3, (1)Shanghai Ocean University, Lingang, China, (2)Shanghai Ocean University, Shanghai, China, (3)Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China
 
Spatial Association Between Methane Seeps and Geomorphology on the Northern US Atlantic Margin (1113732)
Adam D Skarke and Gabriel Emile Hernandez, Mississippi State University, Department of Geosciences, Mississippi State, MS, United States
 
Geochemical and Thermal Evidence from Pythia’s Oasis Seep Indicate Strike-Slip Faults May Regulate Megathrust Pore Fluid Pressure Offshore Central Oregon (1115785)
Irita Evelyn Aylward, University of Washington Seattle, School of Oceanography, Seattle, United States, Evan A Solomon, Univ Washington, Seattle, WA, United States, Brendan Thomas Philip, University of Washington, Seattle, WA, United States; University of Maryland, College Park, United States, Marta E Torres, Oregon State Univ, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, Robert N Harris, Oregon State University, Corvallis, OR, United States, Robert W Collier, Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States and Deborah S Kelley, University of Washington Seattle Campus, School of Oceanography, Seattle, WA, United States
 
Results from E/V Nautilus Expedition NA128 “Cascadia Margin Seep Exploration”: Cascadia Margin Mapping, High-Resolution ROV Multibeam, and Gas/Fluid Sampling (1120413)
Jeffrey W Beeson1,2, Tamara Baumberger1,2, Susan G. Merle1,2, Anson MacKenzie Antriasian1,2, David A Butterfield3,4, Nathaniel J Buck3,4, Guang-Sin Lu3,4, Kevin K Roe3,4 and Scientific Team of E/V Nautilus Expedition NA128, (1)Oregon State University, Cooperative Institute for Marine Ecosystem and Resource Studies, Newport, United States, (2)NOAA Pacific Marine Environmental Laboratory, Newport, United States, (3)University of Washington, Cooperative Institute for Climate, Ocean & Ecosystem Studies, Seattle, United States, (4)NOAA Pacific Marine Environmental Laboratory, Seattle, United States
 
Dynamics Methane Seeps in the Black Sea: Transfer between the Water Masses and to the Atmosphere (1123765)
Livio Ruffine1, Roberto Grilli2, Olivia Fandino1, Mathis Lozano3, Christophe Peyronnet4, Jean-Pierre Donval5, Vincent Riboulot6, Stéphanie Dupré6 and Jean-Daniel Paris7, (1)UMR Geo-Ocean, Univ Brest-CNRS-IFREMER, Plouzane, France, (2)Univ. Grenoble Alpes, CNRS, IRD, Grenoble INP, IGE, 38000 Grenoble, France, Grenoble, France, (3)LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France, (4)IFREMER, REM, Unité RDT, Plouzané, France, (5)IFREMER, Department of Marine Geosciences, Plouzané, France, (6)IFREMER, Plouzané, France, (7)IPSL/CNRS/CEA/UVSQ, Gif Sur Yvette, France
 
Updated Inventory of Methane Seeps on the U.S. Atlantic Margin (1128367)
Adam D Skarke1, Gabriel Emile Hernandez1 and Surabhi Gupta2, (1)Mississippi State University, Department of Geosciences, Mississippi State, MS, United States, (2)Mississippi State University, Mississippi State, United States
 
An Image Analysis for Understanding the Ascending Behavior of Methane Bubbles in the Ocean (1128694)
Chiyoko Hirose1, Daiki Nakashima2, Tsuyoshi Takenouchi2, Chiharu Aoyama3 and Hiroaki Watanabe4, (1)Kyushu University, Faculty of Engineering Sciences, Fukuoka, Japan, (2)Kyushu University, Interdisciplinary Graduate School of Engineering Sciences, Fukuoka, Japan, (3)Tokyo University of Marine Science and Technology, Tokyo, Japan, (4)Kyushu University, Faculty of Engineering Sciences, Fukuoka, Japan
 
Regional sub-seafloor sulfate budget of the northern South China Sea and implications for the deep-sourced methane (1134933)
Yu Hu1, Dong Feng1, Jörn Peckmann2, Xinxin Zhang1, Linying Chen1 and Duofu Chen1, (1)Shanghai Ocean University, Shanghai, China, (2)Institute of Geology, Universität Hamburg, Hamburg, Germany
 
Discovery of a Neogene Paleo-pockmark Field in the Northern Orange Basin, Offshore South Africa (1144750)
Ovie Emmanuel Eruteya1, Yakufu Niyazi2, Emna Meftah1, Boris Secke Bekonga Gouott3, Matteo Spada4, Mimonitu Opuwari5 and Andrea Moscariello1, (1)University of Geneva, Department of Earth Sciences, Geneva, Switzerland, (2)The University of Western Australia, Minderoo-UWA Deep-Sea Research Centre, School of Biological Sciences and Oceans Institute, Perth, Australia, (3)University of Yaoundé I, Department of Earth Sciences, Yaoundé, Cameroon, (4)Zurich University of Applied Sciences, School of Engineering, Winterthur, Switzerland, (5)University of the Western Cape, Department of Earth Sciences, Bellville, South Africa
 
Multiple sulfur isotope fingerprints of sulfate-driven anaerobic oxidation of methane (1148184)
Shanggui Gong1, Gareth Izon2, Dong Feng1, Yongbo Peng3, Qianyong Liang4, Jörn Peckmann5 and Duofu Chen1, (1)Shanghai Ocean University, Shanghai, China, (2)Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, United States, (3)Nanjing University, International Center for Isotope Effects Research, Nanjing, China, (4)Guangzhou Marine Geological Survey, MLR Key Laboratory of Marine Mineral Resources, Guangzhou, China, (5)Institute of Geology, Universität Hamburg, Hamburg, Germany
 
Temporal Diversity within Cretaceous Methane Seeps, Great Valley Group, Central California (1150888)
Judy Malas1, Elise Wallet2, George A Schaible3, Bryan J. Rodriguez-Colon4, Simon C Brassell5, Shaelyn Silverman6, Makayla N Betts6, John S Magyar6, Samuel Webb7, Alex L Sessions6, Victoria J Orphan6, Shana Goffredi8, Russell Scott Shapiro9 and International Geobiology Course 20226, (1)University of Illinois at Chicago, Earth and Environmental Sciences, Chicago, IL, United States, (2)Uppsala University, Department of Earth Sciences, Uppsala, Sweden, (3)Montana State University, Bozeman, United States, (4)University of Kansas, Geology, Lawrence, KS, United States, (5)Indiana University, Earth & Atmospheric Sciences, Bloomington, IN, United States, (6)California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, United States, (7)Stanford University, Stanford Synchrotron Radiation Lightsource, Stanford, United States, (8)Occidental College, Los Angeles, CA, United States, (9)California State University Chico, Chico, CA, United States
 
Numerical Modeling of Slope Instability in Marine Hydrate-Bearing Sediment (1197691)
Sulav Dhakal, Louisiana State University, Baton Rouge, LA, United States and Ipsita Gupta, Louisiana State University, Craft & Hawkins Department of Petroleum Engineering, Baton Rouge, LA, United States
 
Characterising Shallow Stress Fields from Seismic Observations of Gas Migration through the Hydrate Stability Zone, Hikurangi Margin, New Zealand (1201492)
Gareth James Crutchley1, Jess Irene Tsahai Hillman2, Karsten Friedrich Kroeger3, Sally Watson4, Francesco Turco5, Joshu J Mountjoy6, Bryan William Davy3 and Susi Woelz7, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (2)GNS Science, Lower Hutt, New Zealand, (3)GNS Science-Institute of Geological and Nuclear Sciences Ltd, Lower Hutt, New Zealand, (4)National Institute of Water and Atmospheric Research, Wellington, New Zealand, (5)University of Otago, Dunedin, New Zealand, (6)NIWA National Institute of Water and Atmospheric Research, Wellington, New Zealand, (7)NIWA, Wellington, New Zealand
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