Ground Motion Modeling

Workshop Goals

Ground Motion Modeling Topical Workshop

The goal of the Ground Motion Modeling Topical Workshop is to define from a community perspective the broad needs, goals, and directions of ground motion modeling and hazard in Cascadia and to identify priorities in fundamental and applied science directions for the next decade.  The desired outcome is to write a peer reviewed roadmap or opinion piece for this frontier.

The Ground Motion Modeling Topical Workshop originally scheduled for October 2025 was postponed. We are continuing to pursue our goals through two virtual sessions open to the CRESCENT community, followed by an in person workshop on Wednesday, May 27th 2026.

GMM Special Interest Group Virtual Sessions

Virtual Session Agendas

Notes: All times Pacific Time. Agenda is tentative and subject to change.

Friday, January 9, 2026 – Outputs: What ground motion estimation in Cascadia needs to address

9:00 – 11:00 am P.S.T., on zoom

  • Albert Kottke (PG&E): “Importance of Spatially Varying Ground Motion Models and Implications for Cascadia” 
  • Jeff Berman (UW): “Ground motion considerations for the built environment in Cascadia”
  • Brett Maurer (UW): “Ground Motions and Ground Failure: Looking Mostly Forward and A Little Bit Backward”
  • Morgan Moschetti (USGS): “Ground-motion modeling in Cascadia for the U.S. National Seismic Hazard Model: Current modeling approaches and open questions” 
  • Karen Sung (UC Berkeley): “Implementing Simulations in Ground Motion Models: Practical Needs and Challenges” 
  • Q&A and Discussion

Date TBA, 2026 – “Inputs and Methodologies”

Time TBA, on zoom

  • Agenda forthcoming

In-person Workshop Agenda

Notes: All times Pacific Time.

Wednesday, May 27, 2026

Eugene, OR

  • Agenda forthcoming

Travel & Lodging

Venue

This CRESCENT Topical Workshop will be held at the University of Oregon, in the Gumwood Room of the Erb Memorial Union Building (EMU) located at 1395 University St., Eugene, OR 97403

Local information

The EMU is located at the heart of the University of Oregon campus, within easy reach of downtown Eugene and surrounding places of interest. Click here for information on where to eat, drink and recreate, or check this map for more ideas.

Flights and ground transportation

Eugene airport (EUG) is a ~20 minute drive from the meeting venue. There is no public transportation from the airport to the university, though several taxi, shuttle and rideshare options are available.

Parking

The University of Oregon has two main parking garages that are an eight-minute walk from the workshop venue: 13th St Garage and Millrace Drive Garage. Daily visitor permits for other campus lots, including ADA parking spaces, are available via the University’s parking portal.

Lodging – Info to come

Workshop Planning Committee

Valerie Sahakian, University of Oregon

Valerie Sahakian
University of Oregon
vjs@uoregon.edu

Alice Gabriel
University of California, San Diego
algabriel@ucsd.edu 

Erin Wirth, US Geological Survey

Erin (Wirth) Moriarty
United States Geological Survey
emoriarty@usgs.gov

Emrah Yenier
Haley & Aldrich 
EYenier@haleyaldrich.com

Chih-Hsuan Sung
University of California, Berkeley
karensung@berkeley.edu 

Alex grant, US Geological Survey

alex grant
United States Geological Survey
agrant@usgs.gov

Brett Maurer
University of Washington
bwmaurer@uw.edu

Norman Abrahamson
University of California, Berkeley
abrahamson@berkeley.edu 

Morgan Moschetti
United States Geological Survey
mmoschetti@usgs.gov

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