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Multiple SSA Session Announcements

Date: 01/09/2018

Dear SCEC Community,

Please see below for several SSA announcements:
1 Exploring Rupture Dynamics and Seismic Wave Propagation along Complex Fault Systems
2 Testing PSHA input data, source models, and hazard estimates
3 Observed Characteristics of Induced Seismicity: From Laboratory to Field Scale | Adaptation of New Technologies and Methods to Drive New Discoveries in Seismology and Geodesy
4 Bridging Observations from Geology and Geodesy to Understand Tectonic Deformation over Multiple Timescales
5 Science Gateways and Computational Tools for Improving Earthquake Research
Regards,

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1. Exploring Rupture Dynamics and Seismic Wave Propagation along Complex Fault Systems
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Dear Colleagues,

We would like to draw your attention to our session on "Exploring Rupture Dynamics and Seismic Wave Propagation along Complex Fault Systems" at the SSA Seismology of the Americas Meeting, taking place 14–17 May, 2018, in Miami, Florida.

Exploring Rupture Dynamics and Seismic Wave Propagation along Complex Fault Systems

Investigations related to how complexities in fault parameters could potentially impact the behavior of earthquake rupture and affect seismic hazard are areas of active and challenging research. This session will highlight recent advances in rupture dynamics on complex fault systems. We are open to a wide range of studies related to numerical, experimental and observational fault rupture dynamic studies with heterogeneities such as fault geometry, fault roughness, frictional parameters, creeping mechanisms, stress asperities, off-fault material properties, bi-material interfaces and wedge structures along subduction zones. We also encourage contributions on research that explores links between earthquake source physics, tsunami generation/propagation and ground motion variability.

Session Conveners

Roby Douilly <roby.douilly@ucr.edu>
Kenny Ryan <kryan@usgs.gov>
David Oglesby <david.oglesby@ucr.edu>
Ruth Harris <harris@usgs.gov>
Eric Geist <egeist@usgs.gov>

2. Testing PSHA input data, source models, and hazard estimates
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Dear Colleagues,

The Seismological Society of America meets May 14 - 17 in Miami. Abstracts are due soon: January 24, 2018.

Probabilistic seismic hazard assessment models are widely used and becoming increasingly sophisticated. Many ask about their complexity and how to evaluate their ingredients and their performance. If you develop or use PSHA models and have ideas on how to test them, please consider submitting an abstract to the Special Session described below.

Testing PSHA input data, source models, and hazard estimates
Conveners: D. Jackson, Y. Rong, and H. Magistrale

Many open, transparent probabilistic seismic hazard assessment (PSHA) models have become available, each involving many types of input data and assumptions. To inspire confidence, their input data, source models (i.e., earthquake forecasts), and hazard estimates require rigorous testing and validation.

UCERF3, the most advanced and comprehensive earthquake forecast ever, serves as an important example of a PSHA source model. It uses earthquake history, geologic fault data, geodetic and geologic strain rates, and many assumptions. It is used in the US National Seismic Hazard Maps and the Uniform Building Code. With 1440 logic tree branches in just the time-independent models, it calculates off-fault epicenter rate density and rates of about 250,000 fault rupture scenarios, offering targets to evaluate the internal consistency and influence of model parameters and data values.

We welcome contributions to testing PSHA input data, including earthquake history, paleo-seismic event rates, geological and geodetic fault slip rates; strategies for integrating those data into source models; ground motion prediction equations; and resulting hazard estimates.

3. Observed Characteristics of Induced Seismicity: From Laboratory to Field Scale | Adaptation of New Technologies and Methods to Drive New Discoveries in Seismology and Geodesy
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Dear Colleagues,

We invite you to submit an abstract to the SSA 2018 Annual Meeting in the following Special Sessions. The abstract deadline is 24 January 2018.

Observed Characteristics of Induced Seismicity: From Laboratory to Field Scale
A wide variety of methods have been employed to examine the physical mechanisms and site-specific conditions that control anthropogenically induced seismicity. Laboratory experiments and mesoscale experiments of fluid injection into active faults investigate the role of fluids and friction on fault stability and the contribution of aseismic slip to the nucleation process. Seismic array installations including large-N array deployments characterize the seismic wave-field, microseismicity and fault structure. Advanced earthquake detection and location techniques are being used to identify complex spatial and temporal migration patterns and statistical methods are used to differentiate between tectonic and induced events. Deployment of pressure monitoring networks explore the migration of fluids in the subsurface and illuminate how earthquakes modify the poroelastic environment. Geomechanical reservoir simulations relate fluid injection volumes/rates to subsurface fluid-pressure changes and numerical methods couple reservoir models to earthquake simulators to understand how induced seismicity sequences evolve due to changes in injection operations. These methods reveal that the character and evolution of induced seismicity are more complex than previously thought. We solicit contributions from laboratory/field experiments and observational, geomechanical and numerical modeling studies that explore the wide variety of characteristics, as well as the physical conditions and mechanisms, that control behavior of induced seismic sequences. In addition, we encourage contributions that discuss datasets and techniques needed to further understand and mitigate the risk associated with fluid injection.
Session Conveners: Kayla A. Kroll (LLNL), Elizabeth S. Cochran (USGS), Brett Carpenter (OU)
Adaptation of New Technologies and Methods to Drive New Discoveries in Seismology and Geodesy
In recent years, advancements in seismology and geodesy have been made possible by innovative adaptation of new methods and technology from other fields. Improved earthquake detection and ground motion characterization have been achieved by using consumer MEMS accelerometers, consumer GPS chips, wireless nodal systems and other new sensor technology that enable dense sensor networks. Deep learning, fingerprinting and linkage methods originally developed for Internet search engines and image recognition can substantially improve our ability to detect and categorize seismic events, including earthquakes and low frequency earthquakes. In this session, we encourage submissions on any approach that expands the horizons of seismology and geodesy beyond traditional instruments and methods.
Session Conveners: Sarah E. Minson (USGS), Elizabeth S. Cochran (USGS)

4. Bridging Observations from Geology and Geodesy to Understand Tectonic Deformation over Multiple Timescales
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Dear Colleagues,

We would like to draw your attention to our session SE21: Bridging Observations from Geology and Geodesy to Understand Tectonic Deformation over Multiple Timescales at the 2018 AOGS meeting in Honolulu, Hawaii, on 4-8 June 2018. In this session, we invite contributions that explore deformation at timescales anywhere from days to years to millennia.

Please go to the AOGS webpage (http://www.asiaoceania.org/aogs2018/public.asp?page=abstract.htm) to submit your abstract. The submission deadline is 19 January. Details of the session are below:

Session Title
Bridging Observations from Geology and Geodesy to Understand Tectonic Deformation over Multiple Timescales

Session Conveners
Dr. Aron Meltzner (Nanyang Technological University, Singapore), meltzner@ntu.edu.sg
Dr. Ya-Ju Hsu (Academia Sinica, Taiwan), yaru@earth.sinica.edu.tw
Dr. Tadafumi Ochi (Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, Japan), tadafumi.ochi@aist.go.jp
Dr. Yu-Nung Nina Lin (Nanyang Technological University, Singapore), ynlin@ntu.edu.sg
Dr. Emma Hill (Nanyang Technological University, Singapore), ehill@ntu.edu.sg

Session Description
Tectonic processes occur at a variety of timescales, from seconds (coseismic) to weeks (short-term slow slip) to years (postseismic and long-term slow slip) to decades (interseismic) to millennia or longer (long-term deformation). Studies focused on results derived from a single technique may not have sufficient context to assess how deformation evolves over time. In order to address this important problem, we invite contributions in which results from multiple techniques are combined to explore tectonic deformation over multiple timescales. We also encourage contributions that compare present to past behavior or that focus specifically on variability of tectonic deformation over long timescales.

Further Information at AOGS website: http://asiaoceania.org/aogs2018/
Abstract Deadline: 19 January 2018
Meeting Dates: 4-8 June 2018

Aron Meltzner
Ya-Ju Hsu
Tadafumi Ochi
Nina Lin
Emma Hill

5. Science Gateways and Computational Tools for Improving Earthquake Research
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Dear Colleagues,

We would like to draw your attention to a Special Session at the 2018 Annual Meeting of the Seismological Society of America, taking place 14–17 MAY 2018 in Miami, Florida.

Abstract Deadline is 24 January 2018.

Science Gateways and Computational Tools for Improving Earthquake Research

Science gateways allow research communities to access shared data, software, computing services, instruments, educational materials and other resources. Advances in earthquake science are becoming increasingly tied to the ability to fuse and model multiple data types, requiring advances in computational infrastructure. Earthquake scientists must rely on computational laboratories to integrate disparate data sets and perform simulation experiments, particularly because earthquake processes span multiple spatial and temporal scales, ranging from microscopic, millisecond source physics to long-term, global tectonic scales. This session focuses on advances in computational infrastructure and data synthesis for enhancing earthquake science, including software, supercomputing, simulation models, sensor technology, heterogeneous data sets, cloud computing, management of huge data volumes and development of community standards.

Session Conveners,

Andrea Donnellan, Jet Propulsion Laboratory, California Institute of Technology, <andrea.donnellan@jpl.nasa.gov>
Lisa Grant Ludwig, University of California, Irvine, <lgrant@uci.edu>

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