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AGU Session Announcements, Calls for Abstracts

Date: 07/29/2019

Dear SCEC Community,

This is the last announcement we will send pertaining to AGU sessions / calls for abstracts. The deadline for submission is this Wednesday, July 31st, at 11:49 EDT.

1. T010: Can fault healing control slip style and the seismic cycle?
2. S021 - How do earthquakes start?
3. T024 - Geology and Geodynamics of the San Francisco Bay Area
4. T004 - Advances in Methods for Observing and Modeling Seismic and Aseismic Processes

We appreciate your interest in SCEC.

Regards,

SCEC Information

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1. T010: Can fault healing control slip style and the seismic cycle?:
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I would be grateful if you could include this AGU session in the next scecinfo announcement. Thank you.

Dear Colleagues,
We would like to draw your attention to the following session at the upcoming AGU annual meeting in San Francisco.

T010: Can fault healing control slip style and the seismic cycle?
Submission Deadline: Wednesday, 31 July at 23:59 EDT.

Description:
Fault healing (post-seismic recovery of fault-rock strength and permeability) has been invoked as a control on the magnitude, recurrence, and slip speed of earthquakes as well as episodic tremor and slow-slip events. Lack of healing may promote steady creep preventing repetitive failure events. The efficacy of healing processes, however, depends on the relative rates of geochemical reaction and volumetric deformation throughout the seismic cycle. Whereas deformation rates around faults are generally well understood, time scales of physico-chemical processes that dictate healing are poorly constrained by direct observation. Thus, it is rarely demonstrated whether the physico-chemical processes invoked can occur with a magnitude and rapidity consistent with the time- and strain rate-dependence of fault healing. We invite interdisciplinary studies that explore fault-rock healing in the context of the full spectrum of fault-slip behaviors, with an emphasis on the magnitude, rate, and implications of healing processes over single or multiple slip cycles.

Confirmed Invited Speakers:
Heather Savage, University of California, Santa Cruz
Martijn van den Ende, Université Nice Sophia Antipolis

Regards,
Randy Williams, Ake Fagereng, Kohtaro Ujiie, Marco Scuderi

2. S021 - How do earthquakes start?:
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Dear colleagues,

We would like to draw your attention to the following session organized by the Seismology section at the upcoming 2019 AGU Fall Meeting. As a reminder, the deadline for abstract submissions for this year's meeting is Wednesday, July 31 at 23:59 EDT.

S021 - How do earthquakes start?
https://agu.confex.com/agu/fm19/prelim.cgi/Session/74342

Invited Speakers:
Emily Brodsky, University of California Santa Cruz
Paul Johnson, Los Alamos National Laboratory

Session Description:
While a number of physical processes and properties, such as fault frictional/structural heterogeneity, the presence of fluids, thermal effects, aseismic deformation, as well as static and dynamic stress changes, have been proposed to play a role in the nucleation and triggering of earthquakes, their relative significance and relevant spatial and temporal scales remain uncertain. We welcome experimental, theoretical and observational studies that explore and provide constraints on the mechanisms and conditions that are critical for understanding how ruptures begin, including but not limited to the following questions: (1) To what degree and at what spatio-temporal scales does heterogeneity impact nucleation? (2) Under what conditions do fluids induce unstable slip? (3) What role do static/dynamic stress changes play in promoting seismicity? (4) What is the relationship between aseismic deformation and earthquake nucleation? (5) Why do some ruptures accelerate and become large dynamic events while others remain small or aseismic?

Conveners:
Valère Lambert, California Institute of Technology
Yihe Huang, University of Michigan Ann Arbor
Thomas Goebel, University of California, Santa Cruz
Zachary Ross, California Institute of Technology

3. T024 - Geology and Geodynamics of the San Francisco Bay Area:
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We are pleased to invite your submissions to an interdisciplinary session at the AGU Fall Meeting:

*Watch for further updates on pre-meeting field trips and the launch of a new online/mobile field trip guide to exceptional Bay Area geo-sites during the Fall Meeting.*

T024 - Geology and Geodynamics of the San Francisco Bay Area

In the San Francisco Bay Area, plate boundary deformation accommodated along the San Andreas Fault System, comprising multiple active faults, and surface processes such as landslides, fluvial erosion, and deposition work together to shape the multifaceted landscape. The geometry and properties of the active San Andreas Fault System, as well as the landslide and erosion patterns in the region, are strongly affected by the Mesozoic subduction history which formed the underlying bedrock and predecessors to the present-day fault system. This session addresses how the integrated geological history of the bedrock impacts the modern geodynamic and landscape processes. We invite studies that can the contribute to an interdisciplinary session addressing the interrelationships between the bedrock geologic history, active faults, hydrogeology, environmental geology, surface processes and engineering geology of the Bay Area and surrounding coastal California areas.

Conveners:
James D Kirkpatrick, McGill University
Callan Bentley, Northern Virginia Community College Annandale
Kimberly Blisniuk, San José State University
Christie D Rowe, McGill University

Index Terms:
4302 Geological
8106 Continental margins: transform
8170 Subduction zone processes
8175 Tectonics and landscape evolution

4. T004 - Advances in Methods for Observing and Modeling Seismic and Aseismic Processes:
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Dear Colleagues,

The AGU abstract deadline is July 31 at 23:59 EDT. We invite you to submit an abstract to our AGU 2019 Fall Meeting session, "T004 - Advances in Methods for Observing and Modeling Seismic and Aseismic Processes."

The session description is as follows:

Our ability to resolve aspects of the earthquake cycle continues to improve with the ongoing development of new geodetic and modeling techniques. To understand short-term and long-term tectonic processes in a complex earth, it is crucial to 1) correctly separate the contributions made by seismic, aseismic and non-tectonic deformation in data, and then 2) link these observations to fault and bulk processes with a view of their spatiotemporal complexities and interactions. We welcome new contributions on: improved methods detect the signals of interest, new techniques to invert these signals for robust interpretations of the physical processes driving them (e.g. seismic vs. aseismic slip, off-fault deformation, etc.), advances in modeling these processes using realistic physics, and any combination of these and similar topics. The aim is to provide an environment in which the observational and modeling communities can discuss our understanding of seismic and aseismic processes and the development new approaches.

Conveners:
Kali Allison, University of Maryland College Park
Chris Rollins, Michigan State University
Jessica Murray, US Geological Survey
Adriano Gualandi, California Institute of Technology

Invited speakers:
Jorge Jara, Ecole Normale Superiore de Paris
Louisa Tsang, Geoazur, Nice

You may submit an abstract to this session using the following URL: https://agu.confex.com/agu/fm19/prelim.cgi/Session/79655

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