OS44B:
Scientific and Technical Advances in Mapping and Characterizing Seafloor Volcanism and Hydrothermal Processes III

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Session ID#: 15129

Session Description:
More than 70% of the Earth is covered by oceanic lithosphere yet the accretion and subsequent evolution of this lithosphere remains poorly understood. Seafloor volcanism is manifested through oceanic spreading centers, back-arcs, arcs and hot-spot volcanism. These, in turn, give rise to associated seafloor processes that are diverse, complex and integrated, meaning that cross-disciplinary research is essential to understand how these different components interact. Historically data collection has been hampered by the difficulty of making detailed observations of the deep ocean floor and only recently have technological and methodological innovations made it possible to collect comprehensive, detailed datasets. In this session we invite contributions related to the scientific application of these new methodologies to studying processes associated with seafloor volcanism. Scientific findings in volcanic accretion, tectonic extension, hydrothermal cooling and biodiversity as well as interdisciplinary research combining these topics is particularly welcomed.
Primary Convener:  Timothy J Crone, Lamont-Doherty Earth Observatory, Palisades, NY, United States
Conveners:  Timothy J Crone, Lamont-Doherty Earth Observatory, Palisades, NY, United States and Delwayne R Bohnenstiehl, North Carolina State University, Marine, Earth and Atmospheric Sciences, Raleigh, United States
Chairs:  Delwayne R Bohnenstiehl, North Carolina State University, Marine, Earth and Atmospheric Sciences, Raleigh, United States and Timothy J Crone, Lamont-Doherty Earth Observatory, Palisades, NY, United States
OSPA Liaison:  Delwayne R Bohnenstiehl, North Carolina State University, Marine, Earth and Atmospheric Sciences, Raleigh, United States
Index Terms:

3045 Seafloor morphology, geology, and geophysics [MARINE GEOLOGY AND GEOPHYSICS]
3050 Ocean observatories and experiments [MARINE GEOLOGY AND GEOPHYSICS]
3094 Instruments and techniques [MARINE GEOLOGY AND GEOPHYSICS]

Abstracts Submitted to this Session:

Heat flow in the flanks of the Oceanographer-Hayes segment of the Mid-Atlantic Ridge (123633)
Virginie Le Gal1,2, Francis Lucazeau3, Mathilde Cannat4, Anne Battani5, Jeffrey Poort6, Xavier Guichet1, Christophe Monnin7, Fabrice J Fontaine8, Sylvie D Leroy2 and Oceanograflu team, (1)IFP Energies nouvelles, Rueil-Malmaison Cedex, France, (2)University Pierre and Marie Curie Paris VI, istep, Paris, France, (3)Institut de Physique du Globe, Paris, France, (4)Institut de Physique du Globe de Paris, Paris, France, (5)IFP Energies nouvelles, Rueil-Malmaison, France, (6)Sorbonne Université, CNRS-INSU, Institut des Sciences de la Terre de Paris, Paris, France, (7)University Paul Sabatier Toulouse III, Toulouse Cedex 09, France, (8)Université de Paris, Institut de Physique du Globe de Paris, UMR 7154, Paris, France
In situ study of the factors controlling Fe, Cu and Zn scavenging during the early mixing between hydrothermal fluids and seawater (141015)
Cecile Cathalot1, Agathe Laes-Huon2, Ewan Pelleter3, Lise Maillard4, Sandrine Chéron5, Audrey Boissier6, Matthieu Waeles7, Laura Cotte7, Benoit Pernet-Coudrier7, Nicolas Gayet8, Jozee Sarrazin9 and Pierre-Marie Sarradin10, (1)Geo-Ocean, University of Brest, CNRS, Ifremer, IRD, IUEM, Plouzané, France, (2)IFREMER, REM/RDT/LDCM, Plouzané, France, (3)IFREMER, Department of Marine Geosciences, Plouzané, France, (4)IFREMER, REM/GM/LCG, Plouzane, France, (5)Ifremer, centre de Brest, LGM, Plouzané, France, (6)IFREMER, GM, Plouzane, France, (7)IUEM Institut Universitaire Européen de la Mer, LEMAR, Plouzané, France, (8)Ifremer, centre de Brest, LEP, Plouzané, France, (9)IFREMER, Centre de Bretagne, Plouzané, France, (10)IFREMER, Brest, France
Earthquake Tidal Triggering Associated with the 2015 Eruption of Axial Seamount (Invited) (161460)
William S D Wilcock1, Maya Tolstoy2, Felix Waldhauser3, Yen Joe Tan3, Charles Garcia4, Adrien F Arnulf5 and Timothy J Crone6, (1)University of Washington Seattle Campus, School of Oceanography, Seattle, United States, (2)University of Washington, College of the Environment, Seattle, United States, (3)Columbia University of New York, Palisades, NY, United States, (4)University of Washington Seattle Campus, School of Oceanography, Seattle, WA, United States, (5)Institute for Geophysics, Austin, United States, (6)Lamont-Doherty Earth Observatory, Palisades, NY, United States
Tracking Spatial and Temporal Changes in Microbial Metabolic Potential and Gene Expression Patterns Across Geochemical Gradients at Axial Seamount (Invited) (163478)
Caroline S Fortunato1, David A Butterfield2, Benjamin Larson3, Christopher K Algar4 and Julie A Huber1, (1)Marine Biological Laboratory, Woods Hole, MA, United States, (2)University of Washington, Cooperative Institute for Climate, Ocean & Ecosystem Studies, Seattle, United States, (3)Pacific Marine Environmental Laboratory, Seattle, WA, United States, (4)Dalhousie University, Halifax, NS, Canada
Microearthquake focal mechanisms and ring-fault mechanics during periods of inflation, deflation, and re-inflation surrounding the 2015 eruption of Axial Seamount (169514)
Samuel R Levy, North Carolina State University Raleigh, Raleigh, NC, United States, Delwayne R Bohnenstiehl, North Carolina State University, Marine, Earth and Atmospheric Sciences, Raleigh, United States and Jeffery Weis, North Carolina State Univ., Marine, Earth and Atmospheric Sciences, Raleigh, NC, United States
Scales of magmatic replenishment and differentiation on an intermediate spreading mid-ocean ridge segment: Endeavour, Juan de Fuca Ridge (182758)
Brian M Dreyer1, James Gill1 and David A Clague2, (1)University of California Santa Cruz, Santa Cruz, CA, United States, (2)Monterey Bay Aquarium Research Institute, Moss Landing, CA, United States
Circulation, Hydrography, and Transport over the Summit of Axial---the Destination Node of OOI’s Cabled Array (189840)
Guangyu Xu, Applied Physics Laboratory University of Washington, Acoustics, Seattle, United States and J William Lavelle, NOAA, Seattle, WA, United States
Observatory enabled discovery of diffuse discharge temperature structure (162644)
Karen G Bemis, Rutgers University New Brunswick, Department of Marine and Coastal Sciences, New Brunswick, United States, Raymond Lee, University of Victoria, Victoria, BC, Canada and Anatoliy N. Ivakin, Applied Physics Laboratory University of Washington, Seattle, WA, United States

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