SSA and EGU Session Announcements

Dear SCEC Community,

Below are several announcements regarding SSA and EGU sessions. Going forward, we will continue to combine multiple session announcements into a single email.

Regards,

SCEC Information

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Please consider contributing an abstract to our session about surface-rupturing earthquakes at the upcoming SSA Meeting in Pasadena, CA. Abstract deadline is January 9, 2015.

http://www.seismosoc.org/meetings/2015/

Scott, Kate, and Julian

Session Title: How Reliable Are Reconstructions and Models of Surface-Rupturing Earthquakes?

Historic surface-rupturing earthquakes have demonstrated a potential for complex, discontinuous rupture traces. With this in mind, how well do reconstructions and models of past ruptures from paleoseismology, geomorphologic slip-rate studies, or finite fault models and forecasts of future surface-rupturing earthquakes [e.g. UCERF3 (CA), WGUEP (UT), J-SHIS (Japan)] realistically describe the complexity of surface ruptures? Are earthquake magnitudes and rupture lengths from empirically-based models consistent with individual field-based observations (e.g. timing, displacement) of past events)? This session will highlight advancements in earthquake science that improve our understanding of fault segmentation, rupture dynamics, distributed deformation, along-strike and down-dip fault-slip gradients, and related seismic hazard topics. We welcome abstracts from a wide spectrum of scientists, including paleoseismologic studies of Quaternary-active structures, detailed studies of modern ruptures, and dynamic or simulator models of rupture scenarios. We invite discussion of new, innovative approaches that characterize active structures and earthquakes using field-based techniques, computer modeling, and remote sensing. The goal of this session will be to consider ways to improve the documentation of past earthquakes and to advance our estimates of earthquake probabilities.

Conveners:
Scott Bennett - USGS Golden
Kate Scharer - USGS Pasadena
Julian Lozos - Stanford/USGS Menlo Park

Invited Speakers:
James Dolan (USC)
Eileen Evans (USGS)

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Dear colleagues,

I would like to bring to your attention our session of the European Geosciences Union General Assembly in April 2015.

TS8.4/ESSI1.7/G3.6/GD7.8/GMPV5.6
Crustal deformation processes observed by InSAR, GPS and photogrammetry (co-organized)
The occurrence of subsidence, landslides and volcano unrest, as well as liquid{—÷πuid and gas reservoir changes are observed by remote sensing data and validated by ground truth. The detection of such crustal deformation occurrence allows uncovering spatial and temporal patterns of subsurface processes such as fault slip, strain and stress field changes, reservoir pressurization and drainage, and feedback mechanisms.
Besides the source of deformation, also rheology, temporal and mechanical behavior of the surrounding rocks, effects of fault and heterogeneity complexities and interactions of sources, loading types and the topography are in the focus of this session.
In this session we are seeking contributions from geodetic, structural geology and modeling community to analyze and interpret observations from microwave and optical sensors, including InSAR time series, high rate GPS, far field and near field photogrammetry, UAV observations and image correlation methods.
Emphasizis on errors sources, contamination and correction procedures is welcome. Analytical and numerical inverse and forward modeling strategies and model deficiencies ideally contribute to process understanding, and eventually allow assessment of natural hazards and human induced deformation.
Therefore, the aim of this session is to bring together researchers from different communities working at different scales of crustal deformation processes. We welcome contributions from tectonics, volcanology, geodynamics, geodetic and natural hazards community.

We are aiming to bring together people interested in observing modeling and interpreting surface deformation using different tools 

Deadline for abstract submission is January 7th.
Detailed information on how to submit an abstract can be found at: http://egu2015.eu//abstract_management/how_to_submit_an_abstract.html

Apologies for cross-posting.

Sincerely

Rocco Malservisi, Thomas Walter, Riccardo Lanari

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Dear Colleagues,

We would like to bring your attention our session “Seismic Imaging and Monitoring of Near-surface and Crustal Scales: Recent Advances and Future Directions” at the SSA 2015 Annual Meeting.

Abstract:

This session will highlight leading-edge theoretical and practical developments in seismic imaging and monitoring applied on different scales (e.g., the meter-scale in near-surface seismology up to the kilometer-scale in crustal seismology) using both active and passive seismic data. This session includes presentations on various techniques inferring the structure of the Earth as well as velocity and attenuation models derived at local, regional, and global scales, for example, ambient noise tomography and coda-wave interferometry. We invite both methodological studies, which are demonstrating the applicability of new methods, as well as studies aimed at developing new instrumentation to contribute to this session. We welcome innovations and advances in 3D traveltime tomography, waveform tomography, surface wave inversion, joint inversion of multiple geophysical observations as well as multi-repeated observations of geophysical data to detect temporal variations of large-scale environments as well as smaller structures such as volcanoes, fault zones and landslides. We also invite contributions highlighting the physical understanding of the related wave-field composition and phenomena at different scales, its variability over space and time and its statistical treatment. Discussions on the pitfalls and limitations of such methods and potential remedies are also welcomed.

Conveners:

Marco Pilz
GFZ German Research Center for Geosciences
pilz@gfz-potsdam.de

Nori Nakata
Stanford University
nnakata@stanford.edu

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Dear all,

We would like to draw your attention to the following minisymposium taking place as part of the upcoming SSA meeting [Pasadena, April 21-23 (2015)].
We are very excited for this session and hope to see you there either in the audience or giving a talk!  Please feel free to pass this announcement on to your students, or anyone who may be interested.
Best Wishes,
Ahmed Elbanna <elbanna2 [at] illinois [dot] edu>
Harsha Bhat <bhat [at] ipgp [dot] fr>
Multiscale Modeling and Characterization of Fragmentation and Damage Patterns in Fault Zones
The brittle portion of the crust contains structural features such as faults, jogs, joints, bends and cataclastic zones that span a wide range of length scales. These features have a profound effect on earthquake nucleation, propagation and arrest mechanisms. They also contribute to prestress heterogeneity and complexity of ground motion patterns. The feedback between seismic/aseismic slip and these geometric features leads to (1) different slip modes that ranges from extremely localized to widely distributed, (2) activation and de-activation of many of these geometric features during the seismic cycle, and (3) different spatio-temporal distributions of aftershocks and nucleation sites. This session solicits contributions in the broad area of multiscale modeling and characterization of fragmentation and damage generation in fault zones. Possible topics include, but not limited to: (i) constitutive modeling of rate dependent damage accumulation and healing in rocks, (ii) fault zone topology evolution through strain and strain rate dependent grain size evolution, (iii) strain localization in fault gouge and its influence on off-fault damage generation, (iv) field investigations of spatiotemporal distribution near fault surfaces, (v) computational earthquake models that account explicitly for inelastic processes on and off the faults.
 
Ahmed Ettaf Elbanna, PhD.
Assistant Professor
Civil and Environmental Engineering Department
University of Illinois, Urbana-Champaign
2219 Newmak Civil Engineering Lab
205 N. Mathews Ave, Urbana, IL 61801

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On behalf of Nate Onderdonk and Dan Francis:

We're having a session at the SSA meeting in Pasadena April 21-23 next year- see below. 
Send in your abstracts-- We could have a nice set of papers and a discussion about the Borderland...

Dan

http://www.seismosoc.org/meetings/2015/

Recent Advances in Understanding the Onshore and Offshore Southern California Fault System 

Despite being one of the best-studied fault systems in the world, important characteristics of many active faults in southern California remain poorly understood. These include basic characteristics such as fault structure, slip rate, and slip history of offshore structures and poorly exposed faults in the Los Angeles Basin and Mojave Desert. A clearer understanding of fault behavior such as variations in slip rate through time, strain distribution across parallel faults in both space and time, and connectivity between fault zones is also needed. This session seeks contributions that present new data and interpretations that affect seismic hazard estimates of onshore and offshore faults in southern California, including fault structure, slip rate, paleoseismology, and Neogene tectonic evolution.

Session Chairs

Nate Onderdonk <nate [dot] onderdonk [at] csulb [dot] edu>

Robert Francis <rfrancis [at] csulb [dot] edu>