V52B:
New Insights into Oceanic Spreading Centers from Seafloor Observatories I


Submit an Abstract to this Session


Session ID#: 57299

Session Description:
Oceanic Spreading Centers (OSC) are complex settings in which geological, hydrothermal, biological and oceanographic processes all interact. The challenges of understanding these systems and of capturing the volcanic and tectonic events responsible for forming the ocean crust has led to the establishment of longterm multidisciplinary seafloor observatories and miscellaneous deep-sea experiments. The resulting datasets require exploration, integration, and modeling at a level that cumulatively must transcend traditional disciplinary boundaries. The goal of this session is to bring together the broad research community working on OSC to better understand 1) magma supply, storage and emplacement 2) the dynamic hydrothermal system that link the geosphere to the ocean and 3) the associated seafloor ecosystems We also  encourage submissions presenting new advances in deep-sea technologies involved in OSC experiments.
Primary Convener:  Christian Baillard, School of Oceanography, University of Washington, Marine Geology and Geophysics, Seattle, United States
Conveners:  Thibaut Barreyre, Department of Earth Science, University of Bergen, Bergen, Norway, Marjolaine Matabos, IFREMER, Centre de Bretagne, Plouzané, France and David A Butterfield, University of Washington, Cooperative Institute for Climate, Ocean & Ecosystem Studies, Seattle, United States
Primary Liaison:  Christian Baillard, School of Oceanography, University of Washington, Marine Geology and Geophysics, Seattle, United States
Chairs:  Christian Baillard, Ecole Normale Supérieure Paris, Geology, Paris, France and Thibaut Barreyre, Department of Earth Science, University of Bergen, Bergen, Norway
OSPA Liaison:  Christian Baillard, Ecole Normale Supérieure Paris, Geology, Paris, France
Co-Organized with:
Volcanology, Geochemistry and Petrology, and Tectonophysics

Cross-Listed:
  • B - Biogeosciences
  • OS - Ocean Sciences
  • S - Seismology
  • T - Tectonophysics

Proposed Co-Organized Session with:
  • B - Biogeosciences
  • OS - Ocean Sciences
  • S - Seismology
  • T - Tectonophysics
Index Terms:

0450 Hydrothermal systems [BIOGEOSCIENCES]
4825 Geochemistry [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
8416 Mid-oceanic ridge processes [VOLCANOLOGY]
8424 Hydrothermal systems [VOLCANOLOGY]

Abstracts Submitted to this Session:

Constraining Permeability of Fast-spreading Upper Crust: Estimates From Seismic Velocity and Poroelastic Response at the L-vent Site (East Pacific Rise) (Invited) (386432)
Milena Marjanovic, Institut de Physique du Globe de Paris, Paris, France and Javier Escartin, Institut de Physique du Globe, Paris, France
Spatial, Temporal and Size-Frequency Characteristics of Microearthquake Sequences Leading up to the 2015 Eruption of Axial Seamount (422567)
Delwayne R Bohnenstiehl1, Dale Parker Sprinkle II2, Christian Baillard3, Pamela A Moyer4 and Margaret S Boettcher4, (1)North Carolina State University, Marine, Earth and Atmospheric Sciences, Raleigh, United States, (2)North Carolina State University Raleigh, Raleigh, NC, United States, (3)School of Oceanography, University of Washington, Marine Geology and Geophysics, Seattle, United States, (4)University of New Hampshire, Durham, NH, United States
Tracking salt and magmatic gas in two hydrothermal observatories in the NE Pacific (452306)
David A Butterfield, NOAA Pacific Marine Environmental Laboratory, Seattle, WA, United States and Marvin D Lilley, University of Washington, School of Oceanography, Seattle, United States
Exploring Diffuse Temperature Flow, Seismicity, and Tidal Pressure Controls on Flocculation Events at Axial Seamount (442052)
Elizabeth Pesar1, Emilio Tesin1, Dax Christian Soule1, Timothy J Crone2 and Friedrich Knuth3, (1)CUNY Queens College, Flushing, NY, United States, (2)Lamont-Doherty Earth Observatory, Palisades, NY, United States, (3)University of Washington Seattle Campus, Seattle, United States
Coupled stability and change in hydrothermal fluid chemistry during a quarter century at 9°50’N East Pacific Rise (Invited) (431369)
Jill M McDermott1, Daniel J Fornari2, Julia G Bryce3, Maria Florencia Fahnestock4, Thibaut Barreyre5, Jeffrey Seewald6, Karen L. Von Damm4 and Marvin D Lilley7, (1)Lehigh University, Bethlehem, PA, United States, (2)Woods Hole Oceanographic Institution, Department of Geology and Geophysics, Woods Hole, MA, United States, (3)University of New Hampshire, Department of Earth Sciences, Durham, United States, (4)University of New Hampshire, Durham, United States, (5)Department of Earth Science, University of Bergen, Bergen, Norway, (6)Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, United States, (7)University of Washington, School of Oceanography, Seattle, United States
Characterizing the geologic setting of popping rocks: Preliminary results from the 2018 Popping Rocks cruise to the Mid-Atlantic Ridge (Invited) (417901)
Eric L Mittelstaedt1, Mark D Kurz2, V. Dorsey Wanless3, Adam A Soule4, Max Jones4, Kristen E Fauria5, Joshua Curtice4 and Darin M Schwartz6, (1)University of Idaho, Moscow, ID, United States, (2)Woods Hole Oceanographic Institution, Department of Marine Chemistry & Geochemistry, Woods Hole, MA, United States, (3)Boise State University, Department of Geosciences, Boise, United States, (4)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (5)Woods Hole Oceanographic Institution, Woods Hole, United States, (6)Boise State University, Geosciences, Boise, ID, United States
A NOVEL APPROACH TO THE STUDY OF ACTIVELY ERUPTING SUBMARINE VOLCANOES ON EARTH AND BEYOND (Invited) (422094)
John R Delaney, University of Washington, School of Oceanography, Seattle, United States, Dana Manalang, Applied Physics Laboratory University of Washington, Seattle, United States, Kendra L Daly, University of South Florida, College of Marine Science, St. Petersburg, United States, William S D Wilcock, University of Washington Seattle Campus, School of Oceanography, Seattle, United States and OOI Cabled Observatory O & M Team

See more of: Volcanology, Geochemistry and Petrology