S41B:
Intermediate-Depth and Deep-Focus Earthquakes II Posters

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Session ID#: 13028

Session Description:
Intermediate-depth and deep-focus earthquakes are key features of geodynamics because they contribute approximately to a fifth of the Earth's seismicity. Intermediate and deep earthquakes challenge our understanding of earthquake physics, because they occur under extreme pressure and temperature conditions. The essential mechanical process responsible for their existence remains one of the outstanding unsolved problems of geophysics. Their source properties provide unique clues into deep Earth mineral physics, stress state, and subducted slab dynamics. Understanding these deep events can also help us understand earthquake processes in general. In the last few years, new laboratory experiments, numerical simulations, and studies of recent deep events pushed forward our view of deep earthquakes. The aim of this session is to be interdisciplinary and we welcome contributions about all aspects of deep earthquakes (including shallower events that bear on relevant physics), and encourage further interactions among seismology, mineral and rock physics, and geodynamics.
Primary Convener:  Zhongwen Zhan, California Institute of Technology, Seismological Laboratory, Pasadena, CA, United States
Conveners:  Alexandre Schubnel, Ecole Normale Supérieure Paris, Laboratoire de Géologie, Paris, France and Greg Hirth, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States
Chairs:  Alexandre Schubnel, Ecole Normale Supérieure Paris, Laboratoire de Géologie, Paris, France, Greg Hirth, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States and Zhongwen Zhan, California Institute of Technology, Seismological Laboratory, Pasadena, CA, United States
OSPA Liaison:  Zhongwen Zhan, California Institute of Technology, Seismological Laboratory, Pasadena, CA, United States
Co-Organized with:
Tectonophysics, Mineral and Rock Physics, and Tectonophysics

Cross-Listed:
  • MR - Mineral and Rock Physics
  • T - Tectonophysics

Proposed Co-Organized Session with:
  • MR - Mineral and Rock Physics
  • T - Tectonophysics
Index Terms:

3613 Subduction zone processes [MINERALOGY AND PETROLOGY]
7209 Earthquake dynamics [SEISMOLOGY]
7215 Earthquake source observations [SEISMOLOGY]
8118 Dynamics and mechanics of faulting [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Determination of focal mechanism solutions for the Cauca nest, Colombia (187559)
Sergio Andres Diaz and Jean Baptiste Tary, Universidad de los Andes, Bogotá, Colombia
Laboratory earthquakes triggered during the eclogitization of lawsonite bearing blueschist (122132)
Sarah Incel1, Nadege Hilairet2, Loic Labrousse3, Timm John4, Damien Deldicque5, Thomas P Ferrand1, Yanbin Wang6, Joerg Renner7, Luiz F. G. Morales8 and Alexandre Schubnel2, (1)Ecole Normale Supérieure Paris, Paris, France, (2)CNRS, Paris Cedex 16, France, (3)UMI Takuvik Ulaval-CNRS, Quebec City, QC, Canada, (4)Free University of Berlin, Institute of Geological Sciences, Berlin, Germany, (5)Ecole Normale Supérieure Paris, Laboratoire de Géologie, Paris, France, (6)University of Chicago, Chicago, IL, United States, (7)Ruhr University Bochum, Institute for Geology, Mineralogy, and Geophysics, Bochum, Germany, (8)Helmholtz-Zentrum Potsdam Deutsches GeoForschungsZentrum GFZ, Potsdam, Germany
The influence of testing apparatus stiffness on the source properties of laboratory stick-slip (127017)
Brian D Kilgore1, Arthur McGarr1, Nicholas M Beeler2 and David A Lockner3, (1)USGS Earthquake Science Center, Menlo Park, CA, United States, (2)USGS Cascades Volcano Observatory, Vancouver, United States, (3)USGS Western Regional Offices Menlo Park, Menlo Park, CA, United States
Seismotectonics of the Trans-Himalaya, Eastern Ladakh, India (133792)
Arpita Paul, Wadia Institute of Himalayan Geology, Dehradun, India
Combined functional network and frequency-time analysis of acoustic emissions during cracking excitations  (134159)
Hoagy O. OGhaffari, PhD1,2 and W. Ashley Griffith1, (1)University of Texas at Arlington, Arlington, TX, United States, (2)University of Texas at Arlington, Department of Earth and Environmental Sciences, Arlington, TX, United States
Dehydration-driven stress transfer triggers intermediate-depth earthquakes (150089)
Alexandre Schubnel1, Thomas P Ferrand1, Nadege Hilairet1, Sarah Incel2, Damien Deldicque3, Loic Labrousse4, Julien Gasc5, Joerg Renner6, Yanbin Wang7 and Harry W Green II8, (1)CNRS, Paris Cedex 16, France, (2)Ecole Normale Supérieure Paris, Paris, France, (3)Ecole Normale Supérieure Paris, Laboratoire de Géologie, Paris, France, (4)UMI Takuvik Ulaval-CNRS, Quebec City, QC, Canada, (5)Géosciences Montpellier, Montpellier Cedex 05, France, (6)Ruhr University Bochum, Institute for Geology, Mineralogy, and Geophysics, Bochum, Germany, (7)University of Chicago, Chicago, IL, United States, (8)University of California Riverside, Riverside, CA, United States
Frequency-size distributions of Wadati-Benioff zone and near-boundary, intraplate earthquakes (152813)
Jordan Todes1, Emile Okal1 and Stephen H Kirby2, (1)Northwestern University, Evanston, IL, United States, (2)USGS Retired, Menlo Park, United States
Magnitude-Frequency Distribution and Detection of Small Intermediate-Depth Events in the Subduction Zones of Japan (166968)
Shanna Chu, Stanford Earth Sciences, Stanford, United States and Gregory C Beroza, Stanford University, Department of Geophysics, Stanford, CA, United States
Slab Seismicity in the Western Hellenic Subduction Zone: Constraints from Tomography and Double-Difference Relocation (171008)
Felix Julian Halpaap1, Stephane Rondenay2 and Lars Ottemoller2, (1)University of Bergen, Bergen, Norway, (2)University of Bergen, Department of Earth Science, Bergen, Norway
Tectonic Implications of Intermediate-depth Earthquakes Beneath the Northeast Caribbean (175212)
Hannah Mejia, Baylor University, Waco, TX, United States, Jay Pulliam, Baylor University, Department of Geosciences, Waco, United States, Victor A Huerfano Moreno, Puerto Rico Seismic Network, Geology, Mayaguez, United States and Eugenio Polanco Rivera, Universidad Autónoma de Santo Domingo, Instituto Sismológico Universitario, Santo Domingo, Dominican Republic
Experimental investigation of processes responsible for dehydration weakening and embrittlement (175338)
Greg Hirth, Brown University, Department of Earth, Environmental, and Planetary Sciences, Providence, RI, United States, Keishi Okazaki, Brown University, Providence, United States and Brooks Proctor, Brown University, Geology, Providence, RI, United States
How reaction and permeability develop in dehydrating systems (176329)
Henri Joseph Leclère, University of Liverpool, Liverpool, L69, United Kingdom, Dan Faulkner, University of Liverpool, Department of Earth, Ocean and Ecological Sciences, Liverpool, L69, United Kingdom, John Wheeler, University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, L69, United Kingdom and John D Bedford, University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom
Similarity and Cluster Analysis of Intermediate Deep Events in the Southeastern Aegean (176404)
Marija Ruscic, University of Kiel, Department of Geosciences, Kiel, Germany, Dirk Becker, University of Hamburg, Hamburg, Germany, Andrea Bruestle, Landesamt für Geologie und Bergbau Rheinland-Pfalz, Landeserdbebendienst Rheinland-Pfalz, Mainz, Germany and Thomas Meier, Kiel University, Institute of Geosciences, Kiel, Germany
Microseismic Monitoring of the Olivine → Spinel Transition in Fayalite Under Non-Hydrostatic Stress (179226)
Timothy Officer and Richard Secco, University of Western Ontario, Earth Sciences, London, ON, Canada
Full moment tensor inversion of two Hindu Kush intermediate-depth earthquakes using teleseismic and region waveforms (181816)
Zhe Jia, California Institute of Technology, Pasadena, United States, Sidao Ni, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, China and Zhongwen Zhan, California Institute of Technology, Seismological Laboratory, Pasadena, CA, United States
Characterizing intermediate-depth earthquake rupture in the Northern Mariana Subduction Zone (193234)
Adam Arce, Cedric Twardzik and Chen Ji, University of California Santa Barbara, Santa Barbara, CA, United States
A dynamic model for slab development associated with the 2015 Mw 7.9 Bonin Islands deep earthquak (194051)
Ting Yang1, Michael Gurnis2 and Zhongwen Zhan2, (1)CalTech Seismological Laboratory, Pasadena, CA, United States, (2)California Institute of Technology, Seismological Laboratory, Pasadena, CA, United States
Structure and Seismogenesis of Double Benioff Zones (196951)
Manuel Alberto Florez, Massachusetts Institute of Technology, Cambridge, MA, United States and German A Prieto, Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Sciences, Cambridge, MA, United States

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