Thread: SSA Session: Understanding and Modeling Ground Motions and Seismic Hazard from Induced Earthquakes

Started: 2017-01-06 23:33:45
Last activity: 2017-01-06 23:33:45
Topics: SSA Meetings
Are you interested in any aspect of hazard from induced earthquakes,
including modeling ground motion, understanding the physical controls (such
as stress drop) on ground motion, seismic source characterization or
testing of hazard maps?

Well, then, we encourage you to submit a presentation to our session
on "*Understanding
and Modeling Ground Motions and Seismic Hazard from Induced Earthquakes*"
at the SSA Annual Meeting in Denver, CO from April 18 to 20, 2017.

Abstract submission is now open on the meeting website: http://meetings.
seismosoc.org/ and the deadline is 5:00 PM U.S. Pacific Standard Time (UTC
−0800) on Wednesday 11 January, 2017.

We hope to see you in Denver!

Sincerely,
Annemarie Baltay, Dan McNamara, Eric Thompson and Mark Petersen
USGS

*Understanding and Modeling Ground Motions and Seismic Hazard from Induced
Earthquakes*

Performing a probabilistic seismic hazard analysis (PSHA) for induced
seismicity is very difficult because we have neither a complete
understanding of the genesis and recurrence of induced earthquakes nor a
comprehensive model for the ground motion excited by them. Whether there is
a fundamental physical difference between natural and induced events is
still an open question, and how any potential difference manifest
themselves in the ground motion is of great interest. Furthermore, the
level of seismic activity may be dependent on human activity, complicating
any hazard analysis. We seek contributions that will help establish the
modeling input parameters that are critical for the analysis, including
controls on both seismic activity and ground motion, the building blocks of
a PSHA. For earthquake activity, this may include including declustering
earthquake catalogs or determining rates, hypocenters, or maximum
magnitudes. By combining information on the state of stress, hydrologic
properties of injection formations and the basement, and the locations and
orientations of faults with injection data, we have the possibility of
building predictive models that anticipate the seismic potential of an area
based on its past history. On the ground motion side, we encourage
contributions related to understanding if ground motion from induced events
is similar or different to existing models, or how ground motion scales at
very close distances to these shallow events. This could include testing of
existing GMPEs, development of new empirical or simulation based GMPEs, or
understanding of the source, path, or site controls on observed ground
motion. We encourage submissions regarding the phsysical parameters
controling ground motion genesis (such as stress drop or depth) or
propagation (attenuation or other path effects). In particular, resolving
if these stress drop of these events is similar or very different from that
of other tectonic environments is of great interest. Addressing the trade
offs in stress drop and hypocentral depth is also of great interest. We
especially encourage novel, creative and ground-breaking presentations on
concepts that contribute to advancing next-generation induced earthquake
PSHA models.

*Session Chairs*
Annemarie Baltay <abaltay<at>usgs.gov>
Daniel McNamara <mcnamara<at>usgs.gov>
Eric Thompson <emthompson<at>usgs.gov>
Mark Petersen <mpetersen<at>usgs.gov>

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