T11F:
The Spatiotemporal Evolution of Structure and Fault Properties During the Seismic Cycle Posters


Submit an Abstract to this Session


Session ID#: 45562

Session Description:
Geological faults are complex and heterogeneous structures with elastic and hydraulic properties that are interrelated and exhibit spatiotemporal variability. Structural and physical evolution of fault zones during the seismic cycle controls the mechanical response of the fault to changes in the stress conditions with implications for the likelihood of earthquake nucleation and the source properties of rupture. Characterization of the frictional/mechanical behaviour of faults, and their structural evolution in both space and time, is thus a prerequisite for understanding the processes of faulting and earthquake generation. We welcome contributions that investigate, i) mechanical, chemical and hydrological processes on seismic or aseismic faults, ii) feedbacks that arise between different fault zone processes during inter- and co-seismic periods, and, iii) the effects of structural heterogeneity on fault properties. Results from rock-deformation experiments, geological investigations of natural fault zones, earthquake seismology and numerical modelling are encouraged.
Primary Convener:  John D Bedford, University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom
Conveners:  Marieke Rempe, University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom and Christopher Harbord, University College London, Department of Earth Sciences, London, United Kingdom
Primary Liaisons:  John D Bedford, University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom and Christopher Harbord, University College London, Department of Earth Sciences, London, United Kingdom
Chairs:  Marieke Rempe, University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom and Christopher Harbord, University College London, Department of Earth Sciences, London, United Kingdom
OSPA Liaison:  Christopher Harbord, University College London, Department of Earth Sciences, London, United Kingdom

Cross-Listed:
  • MR - Mineral and Rock Physics
  • S - Seismology
Index Terms:

7209 Earthquake dynamics [SEISMOLOGY]
8010 Fractures and faults [STRUCTURAL GEOLOGY]
8118 Dynamics and mechanics of faulting [TECTONOPHYSICS]
8163 Rheology and friction of fault zones [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Dynamic Evolution Of Off-Fault Medium During An Earthquake (Invited) (346311)
Marion Y Thomas, Ecole Normale Supérieure Paris, PSL Research University, Département de Géosciences, Paris, France and Harsha Bhat, Ecole Normale Supérieure, PSL, CNRS UMR 8538, Laboratoire de Géologie, Paris, France
Petrophysical Changes in Fault Damage Zone Rock Induced by Single and Repeated Earthquakes: a Laboratory Study. (Invited) (347430)
Frans M. Aben, University College London, London, United Kingdom, Mai-Linh Doan, Université Grenoble Alpes, ISTerre, Grenoble, France and Thomas M Mitchell, University College London, Department of Earth Sciences, London, United Kingdom
Fluid-assisted healing of micro-cracks in fault damage zones (366420)
Alissar Yehya1, Tajudeen M Iwalewa1, James R Rice1,2 and Zhuo Yang2, (1)Harvard University, John A. Paulson School of Engineering and Applied Sciences, Cambridge, MA, United States, (2)Harvard University, Department of Earth and Planetary Sciences, Cambridge, MA, United States
Reading spatial stress variations observed at multiple scales in boreholes from the Taiwan Chelungpu-fault Drilling Project (387939)
Mayukh Talukdar, University of Wisconsin Madison, Geological Engineering Program, Madison, United States, Hiroki Sone, University of Wisconsin-Madison, Geological Engineering Program, Madison, United States and Li-Wei Kuo, National Central University, Earth Sciences, Kanagawa, Japan
Extreme geothermal gradients at active plate boundaries (388302)
John Townend, Victoria University of Wellington, Wellington, New Zealand, Rupert Sutherland, Victoria University of Wellington, SGEES, Wellington, New Zealand, Virginia Toy, University of Otago, Dunedin, New Zealand and the DFDP Science Team
Coupling long-term and short-term physics of an earthquake on complex fault (397411)
Khurram Aslam, University of Oregon, Department of Earth Sciences, Eugene, United States, Eric G Daub, Center for Earthquake Research and Information, Memphis, TN, United States and Eunseo Choi, PhD, University of Memphis, Center for Earthquake Research and Information, Memphis, TN, United States
Probing changes in frictional state due to normal stress perturbations using controlled-source ultrasonics (410317)
Srisharan Shreedharan, Utah State University, Department of Water, Earth, and Environmental Sciences, Logan, United States, Jacques Riviere, Pennsylvania State University, Engineering Science and Mechanics, University Park, PA, United States and Chris Marone, Pennsylvania State University, Department of Geosciences, University Park, United States
Grain-Scale Deformation Mechanisms Reveal Slow-to-Fast Slip on an Actively Exhuming Low-Angle Normal Fault, Woodlark Rift, SE Papua New Guinea (428936)
Timothy A Little1, Marcel Mizera1, Carolyn J Boulton1 and David John Prior2, (1)Victoria University of Wellington, Wellington, New Zealand, (2)University of Otago, Geology, Dunedin, New Zealand
On the Controls of Fragment Size in Pulverized Fault Zones: The Competition Between Strain Energy and Kinetic Energy during Transient Tensile Fragmentation (436230)
W Ashley Griffith1, Rene C St. Julien2, Hoagy O OGhaffari, PhD3, Troy Barber4, Thomas Marren5 and Sasha Larocque5, (1)Ohio State University Main Campus, Earth Sciences, Columbus, OH, United States, (2)University of Texas at Arlington, Arlington, TX, United States, (3)Massachusetts Institute of Technology, Earth, Atmospheric and Planetary Sciences, Cambridge, United States, (4)Joint Resources Company, Weatherford, TX, United States, (5)Ohio State University Main Campus, School of Earth Sciences, Columbus, OH, United States
A new module designed to study seismic attenuation in large displacement experimental faults (446489)
Giulio Di Toro, University of Padova, Padova, Italy, Christopher Harbord, University College London, Department of Earth Sciences, London, United Kingdom, Elena Spagnuolo, National Institute of Geophysics and Volcanology, Rome, Italy and Nicola Tisato, University of Texas at Austin, Austin, TX, United States

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