Dear SCEC Community,

See the following announcements:

  • AGU Session T002 - Characteristics of faults and fault zones and their influence on earthquake physics
  • AGU Session T021 - Shallow fault zone deformation over the earthquake cycle
  • AGU session MR009. Mechanisms of friction with implications to faults, landslides, and ice sheets
  • AGU Session S028: Recent advances in kinematic and dynamic source modeling
  • Save the Date: USGS Subduction Zone Science Meeting
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On behalf of Travis V. Alongi, USGS
AGU Session T002 - Characteristics of faults and fault zones and their influence on earthquake physics

Please consider submitting an abstract to AGU session 'T002 - Characteristics of faults and fault zones and their influence on earthquake physics: observations, models, and experiments'

Session link - https://agu.confex.com/agu/agu24/prelim.cgi/Session/224612

Abstract
Fault zone structures in the upper crust are characterized by highly localized slip surfaces surrounded by intensely fractured rock. These slip surfaces are often geometrically complex and topographically rough over many orders of magnitude. The damage zone surrounding the slip surface has variability in size, shape, and fracture density that alters the permeability and rheology of the volume. Studies show that quantifiable parameters of faults and fault zones influence fundamental properties of earthquakes including the nucleation, propagation, slip distribution, strain energy budget, and ground motion. However, more work is necessary to improve our understanding of the relationship between earthquakes and the structures that host them. In this session, we welcome contributions from a variety of disciplines to better understand the manifestation and evolution of faults and fault zones in nature as well as the impact of structural variability on the behavior of earthquakes.

Conveners
- James Atterholt (California Institute of Technology)
- Travis Alongi (United States Geological Survey)
- Yihe Huang (University of Michigan Ann Arbor)
- Monica R Barbery (Brown University)



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On behalf of Solène L. Antoine, JPL
AGU Session T021 - Shallow fault zone deformation over the earthquake cycle

Interested in earthquake surface deformation and faulting processes? Please consider submitting an abstract to AGU 2024 Tectonophysics session T021 - and let your colleagues know about the session. This session seeks contributions from diverse fields of geology and geophysics including geodetic and field observations, laboratory experiments, and numerical modeling. Two invited presentations will be given by Jessica McBeck (University of Oslo), and Kathryn Materna (University of Colorado Boulder).

Tectonophysics session T021: Shallow fault zone deformation over the earthquake cycle: observations, experiments, and models.

Shallow fault zones are transitional regions between deep crustal faults, where earthquake ruptures nucleate and propagate, and Earth’s free surface where earthquake ruptures may or may not terminate shallowly and generate distributed deformation in the surrounding crust. Understanding what factors mechanically control the spatiotemporal distribution of shallow fault slip and deformation throughout the earthquake cycle remains an outstanding question with significant implications for seismic and surface rupture hazard models. This session aims at bringing together complementary perspectives that investigate shallow fault zone deformation, including its sensitivity to fault and crustal rheological properties, the interplay between coseismic slip and aseismic slip (creep, afterslip), fluid interactions, and relations with the earthquake source properties. We welcome contributions with new geodetic, geophysical, and geological observations of natural faults, laboratory observations and experiments, and models (theoretical, geomechanical, kinematic and dynamic) that investigate the physics of shallow faulting and/or reproduce observations.

Submit an abstract: https://agu.confex.com/agu/agu24/prelim.cgi/Session/224696

Session conveners:
Solène Antoine, NASA Jet Propulsion Laboratory, California, USA
Johanna Nevitt, United States Geological Survey, California, USA
Ahmed Elbanna, University of Illinois Urbana-Champaign, Illinois, USA
Daniel Faulkner, University of Liverpool, Great Britain
Yuexin Li, California Institute of Technology, California, USA



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On behalf of Monica Barbery, Brown University
AGU session MR009. Mechanisms of friction with implications to faults, landslides, and ice sheets

We kindly invite submissions to the AGU 2024 session MR009. Mechanisms of friction with implications to faults, landslides, and ice sheets. A detailed description of the session is included below. AGU 2024 will take place on December 9-13 in Washington, DC. Abstracts are due July 31 23:59 EDT/03:59 +1 GMT.

We look forward to seeing you in DC!

Conveners,
Nir Badt (University of Pennsylvania)
Kristina Okamoto (University of Minnesota Twin Cities)
Monica Barbery (Brown University)

Session link: https://agu.confex.com/agu/agu24/prelim.cgi/Session/226264

Invited Speakers:
Christine McCarthy (Columbia University)
Behrooz Ferdowski (University of Houston)

Session Description:
Friction mechanisms, of either physical or chemical origin, are expected to control the slip behavior and energy dissipation of faults, landslides, and ice sheets. The spatial scale of these mechanisms varies considerably, from chemical reactions and plastic deformation at the microscale, to fluid flow and granular processes at the centimeter scale, to large-scale roughness and fault interactions at the kilometer scale. Overall, the relative contribution and control of specific mechanisms is largely unknown. Within this view, the activation and contribution of different mechanisms likely depend on factors including composition, fluid chemistry, contact area, slip rate, temperature, and normal stress. This session welcomes experimental, field and theoretical studies that explore how different mechanisms contribute to frictional behavior in nature. This session aims to unite researchers from geology, geophysics and material sciences for an open discussion.

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On behalf of Yoshihiro Kaneko, Kyoto University
AGU Session S028: Recent advances in kinematic and dynamic source modeling

Please consider submitting an AGU abstract to our session:
Recent advancements in modeling of earthquake rupture, coupled with dense observations, have enhanced our understanding of earthquake source physics and seismic wave propagation. Despite these advances, relating these models to real-world data from natural faults remains a significant challenge due to inherent complexities. This session aims to address these challenges by inviting contributions that delve into the following questions: How do the complexities of natural faults influence kinematic and dynamic ruptures, ground motion, and how can we navigate our limited understanding of such complexities? What insights can we gain about earthquake physics from seismic, geodetic, geological, and laboratory data? We encourage studies that employ novel approaches for source modeling and incorporate data from both natural faults and laboratory experiments. Particularly, we welcome studies focusing on the kinematic or dynamic modeling of recent large earthquakes, such as the 2023 Turkey-Syria, 2024 Noto (Japan), and 2024 Hualien (Taiwan), characterized by dense observations.

Invited Speakers:
Alice-Agnes Gabriel (Scripps, University of California at San Diego)
Dara Goldberg (U.S. Geological Survey)


Conveners:
Yoshihiro Kaneko (Kyoto University)
Elisa Tinti (Sapienza Università di Roma)
Luca Dal Zilio (EOS Singapore)
Ruth Harris (U.S. Geological Survey)


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On behalf of Erin Moriarty, USGS
Save the Date: USGS Subduction Zone Science Meeting

The U.S. Geological Survey will host an in-person meeting focused on subduction zone science at the University of Washington in Seattle from January 8-9, 2025. Sessions will highlight new research, data, and scientific questions related to USGS priorities in subduction zones within the U.S. and globally. Topics will include earthquake rupture processes and recurrence, ground motions, volcanic systems, cascading hazards, onshore/offshore structure, and societally relevant hazards science. Additional information on session topics, schedule, and a call for talks and posters will come in Fall 2024. This meeting is open to anyone interested in subduction zone science, and we encourage participation from researchers, agency partners, and end-users working in a range of subduction zone systems.

Please stay tuned for future e-mails regarding registration and meeting details, and share this announcement with colleagues!

Cheers,

Erin Wirth (ewirth@usgs.gov), Joan Gomberg (gomberg@usgs.gov), alex grant (agrant@usgs.gov), Fred Pollitz (fpollitz@usgs.gov), Lydia Staisch (lstaisch@usgs.gov)

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