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SSA Session Announcements - Deadline Today

Date: 01/10/2019

Dear SCEC Community,

Please see below for the following SSA session announcements:

1. SSA 2019 Technical Session: Building, Using, and Validating 3D Geophysical Models
2. 2 advertisements for technical sessions at the SSA annual meeting (23-26 April 2019 - Seattle)
3. State of Stress and Strain in the Crust and Implications for Fault Slip Based on Observational, Numerical and Experimental Analysis

Regards,
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1. SSA 2019 Technical Session: Building, Using, and Validating 3D Geophysical Models:
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Dear Colleagues,

Please join us in Seattle, 23–26 April, 2019 for the SSA Annual Meeting and consider participating in the session entitled "Building, Using, and Validating 3D Geophysical Models" (description below). Abstracts are due by 11 January, 2019. Please see https://www.seismosoc.org/annual-meeting/ for additional meeting details.

Session description:
Geophysical models, such as 3-D geologic and seismic velocity models, are needed in three and sometimes four dimensions for a host of applications from predicting earthquake ground motions to locating natural resources to planning subsurface infrastructure. Many types of observations can be used to inform geophysical models including geologic mapping, borehole data, active and passive seismic imaging, potential field observations, and observations from other direct and indirect methods. Geophysical theory or empirical models may also be used to solve for missing geophysical attributes given other related observations, for example, solving for S-wave velocity and density given the P-wave velocity. Further, some observations sample distinct locations while others average over volumes of varying size, and different methods of informed interpolation and extrapolation may be used to reconcile observations, theory, and empirical relationships into a single geophysical model. We seek contributions in which researchers have developed and/or applied methods for reconciling multiple datasets into a unified geophysical model. Discussion should address the advantages and disadvantages of various types of datasets and methods in an effort to improve and validate the next generation of geophysical models. Applications of geophysical models to improve assessment of hazard and risk, particularly in novel ways or for novel applications, are also encouraged.

See you in Seattle!

Oliver Boyd, USGS Golden (olboyd@usgs.gov)
Bill Stephenson, USGS Golden (wstephens@usgs.gov)
Brad Aagaard, USGS Menlo Park (baagaard@usgs.gov)

2. 2 advertisements for technical sessions at the SSA annual meeting (23-26 April 2019 - Seattle)
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Please consider submitting your ground motions or environmental seismology work to the following technical sessions:

Earthquake Ground Motions and Structural Response in Subduction Zones: A Focus on Cascadia
Accurate estimates of earthquake ground motions and structural response in subduction zone settings are critical to improving seismic hazard assessment and community resilience. This is especially true in the Cascadia subduction zone, with its susceptibility to multiple types of earthquake sources (e.g., megathrust, crustal and intraslab), the presence of deep sedimentary basins and proximity to major cities such as Portland, Oregon; Seattle, Washington and Vancouver, British Columbia. We invite studies focusing on ground motion estimates using a variety of seismological approaches (e.g., observational, theoretical, numerical modeling), as well as those that assess the response of man-made structures and the underlying local site due to earthquake ground motions. We welcome results from all subduction zone systems, with a particular focus on those that may improve our understanding of seismic hazard in Cascadia.
Conveners:
Erin Wirth, U.S. Geological Survey (ewirth@usgs.gov);
Marine A. Denolle, Harvard University (mdenolle@fas.harvard.edu);
Nasser Marafi, University of Washington (marafi@uw.edu);
Valerie Sahakian, University of Oregon (vjs@uoregon.edu)
https://seismosoc.secure-platform.com/a/solicitations/5/sessiongallery/43

Environmental Seismology: Glaciers, Rivers, Landslides and Beyond
Environmental seismology is the study of seismic signals generated at and near the surface created by environmental forces in the atmosphere, hydrosphere or solid Earth. Contributions to this session are welcome on a wide variety of topics including (but not limited to) the seismic signals associated with landslides, rock falls, debris flows, lahars, snow avalanches, cliff or pinnacle resonance, bedload transport, fluid flow in open and confined channels, open water waves, tides, glacial stick-slip, iceberg calving, crevassing, extreme weather, other anthropogenic sources. In addition, other processes monitored by seismic waves such as permafrost, groundwater, soil moisture using seismometers or DAS data are welcome. Contributions that seek to conduct monitoring, create physical or statistical models of source processes or systems, detect events, characterize a wave propagation environment, or interact with other branches of the Earth or social sciences are additionally encouraged.
Conveners:
Bradley Paul Lipovsky, Harvard University (brad_lipovsky@fas.harvard.edu)
Marine A. Denolle, Harvard University (mdenolle@fas.harvard.edu)
Richard C. Aster, Colorado State University (rick.aster@colostate.edu)
https://seismosoc.secure-platform.com/a/solicitations/5/sessiongallery/49

The deadline to submit abstracts at the 23-26 April 2019 annual SSA meeting by January 11th, 2019 here: https://www.seismosoc.org/meetings/submission-system/

3. State of Stress and Strain in the Crust and Implications for Fault Slip Based on Observational, Numerical and Experimental Analysis
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Please consider submitting an abstract to our session at the upcoming SSA Annual Meeting 2019, Seattle, Washington: "State of Stress and Strain in the Crust and Implications for Fault Slip Based on Observational, Numerical and Experimental Analysis".

Session Description:
Understanding the stress and strain distributions in the crust and specifically near fault zones is essential towards refining knowledge on deformation processes, fault mechanics and earthquake source physics. This session focuses on (1) the estimation of the state of stress/strain and (2) the analysis of stress/strain distributions at different spatial and temporal scales by soliciting works based on theory, observational data, modeling and laboratory experiments. Contributions are encouraged but not limited to address the following questions: 1) How are stress and strain distributed in lab experiments and nature, and how can we bridge the two environments? 2) What are insights from numerical simulations on stress state and to what extent can models help in interpreting observations such as earthquakes or slow slip events? 3) What can we extract from the geodetic, geologic, borehole and seismic data regarding the state of stress at regional and local scales? 4) How can spatial stress/strain variations from long-term data compilations improve our knowledge of fault zone structure, earthquake mechanics, and aseismic slip? 5) How can information on the state of stress/strain be used to improve seismic hazard assessments?

The deadline to submit an abstract is January 11, 2019.

Link to the session description: https://seismosoc.secure-platform.com/a/solicitations/5/sessiongallery/117
To submit your abstracts: https://www.seismosoc.org/meetings/submission-system/
Only if your institution is affected by the US government shutdown visit: message-for-u-s-government-employees-affected-by-the-shutdown/
Full meeting information: https://www.seismosoc.org/annual-meeting/

Conveners:
Niloufar Abolfathian, University of Southern California (nabolfat@usc.edu)
Patricia Martínez-Garzón, GFZ Research Center for Geosciences (patricia@gfz-potsdam.de)
Thomas Goebel, University of California, Santa Cruz (tgoebel@ucsc.edu)

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