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2023 USGS Subduction Zone Science Workshop

The U.S. Geological Survey invites you to a free Subduction Zone Science workshop in Seattle at the University of Washington from January 10-11, 2023.

The U.S. Geological Survey (USGS) Subduction Zone Science working group is hosting an in-person subduction zone science workshop at the University of Washington from January 10-11, 2023. Workshop themes align with three USGS subduction zone science priorities:

1) new observations and models of subduction zone processes,

2) the quantification of natural hazards and risk, and

3) forecasting and situational awareness of subduction zone hazards.

Sessions will include a mix of invited keynotes, as well as contributed short-format talks, and poster presentations. Contributions to any of the workshop themes are strongly encouraged, including recent research, new datasets, and work in progress. Breakouts and discussions will focus on identifying current critical needs and research priorities from the community, and plan for a cross-discipline community of practice. This workshop is open to everyone - both internal and external the USGS.

Please contact Kirstie Haynie if you are planning to attend.


The USGS Subduction Zone Science Working Group Members:

Richard Briggs, Uri Brink, Joan Gomberg, Alex Grant, Matt Haney, Kirstie Haynie, Jenna Hill, Emily Johnson, Jeffrey McGuire, Nathaniel Miller, Stephanie Ross, Janet Watt, Aaron Wech, and Erin Wirth


Workshop Schedule


Tuesday, January 10

Alder Auditorium, University of Washington

8:30-9:00 Check-in and Poster Set-up (only coffee and tea will be served)

9:00-9:30 Welcoming Remarks

New Observations & Models of Subduction Zone Processes

  • 9:30-10:20 - Invited Speaker Presentations by Jenna Hill (USGS) and Suzanne Carbotte (Lamont-Doherty Earth Observatory - Columbia University)
  • 10:20-12:00 - Short-form Presentations by Tianhaozhe Sun (Geological Survey of Canada), Emily Johnson (USGS), Ben Brooks (USGS), John DeSanto (University of Washington), Harold Tobin (University of Was hington), Valere Lambert (University of California Santa Cruz), Donna Shillington (Northern Arizona University), Uri ten Brink (USGS)

12:00-1:30 Lunch (On your own. See logistics page for suggestions.)

New Observations & Models of Subduction Zone Processes (continued)

  • 1:30-2:10 Short-form Presentations by Belle Philibosian (USGS), Marine Denolle (University of Washington), Matthew Haney (USGS), Stephen Angster (USGS), Megan Anderson (Washington Geological Survey)

2:10-2:30 Break

The Quantification of Natural Hazards & Risk

  • 2:30-2:55 - Invited Speaker Presentations by David Small (University of Oregon) and alex grant (USGS)
  • 2:55-4:00 - Short-form Presentations by Lydia Staisch (USGS), Marc Eberhard (University of Washington), Ian Stone (USGS), Peter Powers (USGS), Alice Gabriel (University California San Diego)

4:00-4:30 Discussion

4:30-6:00 Poster Presentations & Reception


Wednesday, January 11

Alder Auditorium, University of Washington

8:30-9:00 Check-in (only coffee and tea will be served)

Forecasting & Situational Awareness of Subduction Zone Hazards

  • 9:00-9:50 - Invited Speaker Presentations by Renate Hartog (Pacific Northwest Seismic Network) and Michelle Coombs (USGS)
  • 9:50-10:30 - Short-form Presentations by Tim Melbourne (Central Washington University), Seth Moran (USGS), Terry Plank (Lamont-Doherty Earth Observatory - Columbia University), Maximillian Dixon (Washington Emergency Management Division), Tiegan Hobbs (Geological Survey of Canada)

10:30-11:00 Discussion

11:00-12:00 Poster Presentations

12:00-1:30 Lunch (On your own. See logistics page for suggestions.)

1:30-2:30 Subduction Zone Science Research Centers and Initiatives Panel

  • Panel Members: Emily Brodsky (University of California Santa Cruz), Sang-Mook Lee (Seoul National University), Andrew Newman (Georgia Institute of Technology), Diego Melgar (University of Oregon), Harold Tobin (University of Washington), Tobias Fischer (University of New Mexico)

2:30-2:45 Break

2:45-3:00 USGS Subduction Zone Science Community of Practice Discussion

3:00-4:30 Topical Breakouts


  1. Tsunami and Earthquake Hazards and Communication
  2. Offshore Modelling
  3. Integrated Modelling
  4. Volcanoes

4:30-5:00 Breakout and Meeting Wrap-up


Logistics Information