T51I:
Subduction Top to Bottom (ST2B-2) VIII

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Session ID#: 16046

Session Description:
From top-to-bottom, many geological, geophysical, petrologic/geochemical, and theoretical advances have been made toward understanding subduction zone processes and dynamics since AGU Geophysical Monograph “Subduction Top to Bottom” was published 20 years ago. This session and a related themed issue in GEOSPHERE are intended to revisit the issues that were explored in the 1996 publication and re-assess them in light of recent advancements as well as explore new discoveries and advances in subduction zone research. We invite the broadest possible range of contributions, including subduction-related hazards (volcanic eruptions, earthquakes and tsunamis) and resources.
Primary Convener:  Gray E Bebout, Lehigh University, Dept. Earth and Environmental Sciences, Bethlehem, PA, United States
Conveners:  Gray E Bebout, Lehigh University, Dept. Earth and Environmental Sciences, Bethlehem, PA, United States, David William Scholl, USGS Geological Survey, Emeritus, Earthquake Science Center, Moffett Field, CA, United States and Robert J Stern, University of Texas at Dallas, Geosciences, Richardson, TX, United States
Chairs:  David William Scholl, USGS Geological Survey, Emeritus, Earthquake Science Center, Moffett Field, CA, United States and Gray E Bebout, Lehigh University, Dept. Earth and Environmental Sciences, Bethlehem, PA, United States
OSPA Liaison:  Gray E Bebout, Lehigh University, Dept. Earth and Environmental Sciences, Bethlehem, PA, United States

Cross-Listed:
  • DI - Study of the Earth's Deep Interior
  • MR - Mineral and Rock Physics
  • S - Seismology
  • V - Volcanology, Geochemistry and Petrology
Index Terms:

1031 Subduction zone processes [GEOCHEMISTRY]
7240 Subduction zones [SEISMOLOGY]
8104 Continental margins: convergent [TECTONOPHYSICS]
8413 Subduction zone processes [VOLCANOLOGY]

Abstracts Submitted to this Session:

Advances in Understanding the Seismogenic Plate Interface From Nearly Two Decades of Geodetic and Seismic Observations on the Nicoya Peninsula, Costa Rica (145107)
Susan Y Schwartz1, Marino Protti2, Victor M. Gonzalez2, Timothy H Dixon3, Andrew Vern Newman4, Zhigang Peng4 and Yan Jiang5, (1)University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, CA, United States, (2)Observatorio Vulcanológico y Sismológico de Costa Rica, Heredia, Costa Rica, (3)University of South Florida, School of Geosciences, Tampa, United States, (4)Georgia Institute of Technology Main Campus, Atlanta, GA, United States, (5)Geological Survey of Canada Sidney, Pacific Geoscience Centre, Sidney, BC, Canada
Along-strike Variation From Net Accretion to Subduction Erosion, and in Thermal History, Along an Exhumed Subduction Zone, Western California (140106)
John Wakabayashi, California State University Fresno, Earth and Environmental Sciences, Fresno, CA, United States
Role of subduction obliquity in controlling mantle wedge flow and subduction zone processes (Invited) (118892)
Ikuko Wada, University of Minnesota Twin Cities, Minneapolis, United States, Jiangheng He, Pacific Geoscience Centre, Geological Survey of Canada, Sidney, BC, Canada and Ellen Jilek, University of Minnesota, Minneapolis, MN, United States
Intermediate-Depth Subduction Earthquakes Recorded by Pseudotachylyte in Dry Eclogite-Facies Oceanic Lithosphere from the Alps (142248)
Marco Scambelluri1, Giorgio Pennacchioni2, Mattia Gilio1 and Michael Bestmann3, (1)University of Genoa, Genoa, Italy, (2)University of Padova, Department of Geosciences, Padova, Italy, (3)GeoZentrum Nordbayern, Erlangen, Germany
Alpine Serpentinite Geochemistry As Key To Define Timing Of Oceanic Lithosphere Accretion To The Subduction Plate Interface (154837)
Mattia Gilio1, Marco Scambelluri1, Samuele Agostini2, Marguerite Godard3, Dr Thomas Pettke4 and Samuel Angiboust5, (1)University of Genoa, Genoa, Italy, (2)Consiglio Nazionale delle Ricerche, Pisa, Istituto di Geoscienze e Georisorse, Pisa, Italy, (3)University of Montpellier II, Montpellier Cedex 05, France, (4)University of Bern, Bern, Switzerland, (5)Deutsches GeoForschungsZentrum GFZ, Potsdam, Germany
Seismic signals from the slab surface within and downdip of the thrust zone: blind men and the elephant? (Invited) (160774)
Geoffrey A Abers1, Helen A Janiszewski2, Katie M Keranen3, Jiyao Li4, Demian M Saffer5, Donna J Shillington2 and Kevin Schindler3, (1)Cornell University, Ithaca, NY, United States, (2)Columbia University of New York, Palisades, NY, United States, (3)Cornell University, Earth and Atmospheric Sciences, Ithaca, NY, United States, (4)Lamont Doherty Earth Observatory of Columbia University, Palisades, NY, United States, (5)Penn State University, Department of Geosciences, University Park, PA, United States
Subduction and dehydration of slow-spread oceanic lithosphere (175653)
Michele Paulatto, Université Côte d’Azur, CNRS, OCA, IRD, Géoazur, Sophia Antipolis, Valbonne, France, Mireille Laigle, Université Côte d'Azur, OCA, CNRS, UPMC, IRD, Géoazur, Sophia Antipolis, Valbonne, France, Audrey Galve, Université Côte d’Azur, CNRS, Observatoire Côte d'Azur, IRD, Géoazur, Sophia Antipolis, Valbonne, France and Philippe Charvis, Géoazur - Université Côte d'Azur, IRD, CNRS, OCA, Valbonne, France
Thermal Evolution of Diapirs with Complex Mantle Wedge Flow (193651)
Richard Tucker Sylvia, University of Rhode Island Graduate School of Oceanography, Narragansett, RI, United States and Chistopher Kincaid, University of Rhode Island, Graduate School of Oceanography, narragansett, RI, United States

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