Thread: SSA 2019: Towards a 3D Seismic Model for Cascadia: Foundations, Construction and Applications

Started: 2018-12-26 19:48:52
Last activity: 2018-12-26 19:48:52
Topics: SSA Meetings
Dear Colleagues,

Please consider submitting an abstract to our session at the 2019 SSA
Annual Meeting in Seattle: *Towards a 3D Seismic Model for Cascadia:
Foundations, Construction and Applications*. Abstracts are accepted
until *January
11, 2019*, and can be submitted here:

*Session Description*

The Cascadia subduction zone represents one of the largest potential
hazards for earthquakes in the United States. It is also one of the most
seismically well instrumented subduction zones globally, due in part to
EarthScope, the Cascadia Initiative and its role as a Geoprisms focus site,
as well as to active source experiments spanning several decades. In
particular, experiments in the last five years have yielded an increase in
multiscale seismic data sensitive to the forearc, which has traditionally
been an elusive region to image and monitor. The new data have thus far
yielded improved catalogs of offshore seismicity, detailed images of the
seismic structure of the accretionary wedge and plate interface offshore
and shoreline-crossing seismic images extending from the upper lithosphere
through the upper asthenosphere across the entire margin. Many questions,
however, remain. How do we link seismic imaging observations that range
from small scale upper crustal constraints to along margin asthenospheric
images? What are the challenges to using this new multi-frequency
amphibious seismic data in the forearc? How can these observational results
be integrated with other current and future experiments, models and
observations? In this session, we invite submissions that highlight recent
studies using multifrequency seismic techniques, particularly using data
from the forearc in Cascadia and advances in multidisciplinary integrative
approaches towards describing the Cascadia subduction system.


Helen A. Janiszewski, Carnegie Institution for Science (

Kevin M. Ward, South Dakota School of Mines & Technology (

Anne M. Trehu, Oregon State University (trehu<at>



Dr. Helen A. Janiszewski

Postdoctoral Fellow
Dept. of Terrestrial Magnetism
Carnegie Institution for Science, Washington DC

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