Room: Ballroom
Date: 4/20/2023
Session Time: 8:00 AM to 5:45 PM (local time)
Constraining Seismic Hazard in the Cascadia Subduction Zone
The Cascadia Subduction Zone is host to a range of significant earthquake and tsunami-related hazards, which have the potential to impact major population centers and coastal communities. Due to the historically low seismicity in this region, it has been difficult to constrain the hazard and risk to nearby communities from earthquakes and their cascading effects. However, in recent years, our understanding of seismic hazard in Cascadia has progressed thanks to advances in instrumentation and modeling and interdisciplinary collaborations. For example, the M9 Project and Cascadia Coastal Hazards Research Coordination Network have integrated geosciences and structural engineering with social science and public policy planning. These have helped to better characterize CSZ seismic hazards, both from great megathrust earthquakes and from the more frequent low-to-moderate magnitude seismicity occurring on nearby crustal faults and in the subducting slab. Additional multidisciplinary efforts are anticipated over the next few years: the draft SZ4D implementation plan calls for additional long-term instrumentation in the Cascadia Subduction Zone and collaborations resulting from a nascent earthquake science center proposal (Cascadia Region Earthquake Science Center, CRESCENT) aim to understand hazards from an interdisciplinary perspective, with stakeholder input.
This session welcomes presentations that address all aspects of earthquake and tsunami hazard in Cascadia, including seismic or geodetic modeling efforts, offshore and onshore observational studies, statistical seismology, probabilistic hazard estimation, early warning and communication and policy planning. We encourage contributions related to intraslab and crustal earthquakes as well as megathrust events.
Conveners
Leah Langer, U.S. Geological Survey (llanger@usgs.gov)
Max Schneider, U.S. Geological Survey (mschneider@usgs.gov)
Erin A. Wirth, U.S. Geological Survey (emoriarty@usgs.gov)
Diego Melgar, University of Oregon (dmelgarm@uoregon.edu)
Valerie Sahakian, University of Oregon (vjs@uoregon.edu)
Poster Presentations
| Participant Role | Details | Action |
|---|---|---|
| Submission | Analysis of the Seismic Noise Using PPSD for Non-Volcanic Tremors in Cascadia Prior the Onset of SSEs | View |
| Submission | Ambient Noise Seismic Imaging of an Urban Fault: A Citizen Scientist-Hosted Investigation of the Seattle Fault Zone | View |
| Submission | Variability in Diatom-Based Coseismic Subsidence Estimates Over Multiple Earthquake Cycles in a Southern Oregon Tidal Wetland, Cascadia Subduction Zone | View |
| Submission | Constraining Basin Structure and Characterizing Ground-Motions in the Oregon Willamette Valley | View |
| Submission | Characterizing Aftershock Dynamics in the Pacific Northwest Using Bayesian Etas | View |
| Submission | The California Geological Survey Response to the 20 December 2022 Magnitude m6.4 Ferndale Earthquake Sequence | View |
Constraining Seismic Hazard in the Cascadia Subduction Zone [Poster]
Description