Room: Exhibit Hall A+B
Date: 4/16/2026
Session Time: 8:00 AM to 5:45 PM (local time)
Linking Subduction Zone Processes and Cascading Hazards in Alaska, Cascadia, Chile and Beyond
Subduction zone environments host some of the most dynamic interactions between geological processes and structures, from the deep to the shallow and surface and across timescales from seconds to millennia and beyond. Subduction zone hazards arise from and catalyze the enduring tectonic changes, often involving cascading, interlinked occurrences of earthquakes, tsunamis, volcanic eruptions, landslides and land-level changes that pose significant risks to society. Some of these hazards, such as joint ruptures of the subduction interface along with the upper/lower-plate faults, remain underobserved but complicate risk assessment. To illuminate the structure, source dynamics and hazard impacts in subduction zones, it is essential to integrate observations and models spanning a wide range of spatial and temporal scales. The deeper insights gained from comparing and contrasting the behaviors of archetypal convergent margins underpin the development of a systems-based framework for improving our predictive understanding of subduction zones.
This session is motivated by SZ4D (www.sz4d.org), a community-driven initiative for a long-term, interdisciplinary research program aimed at understanding how the different components of subduction zone systems interact to produce and magnify geohazards over time. We invite new contributions to studies of subduction zone systems globally, on topics including, but not limited to, sensing technologies, imaging, modeling and interpretation studies for faults and earthquakes (particularly linked ruptures of megathrust and crustal faults), lithosphere and asthenosphere, volcanoes, landscapes and associated geohazards and risk evaluation, across seismology, geodesy, geology, engineering and other related fields. Observational, theoretical, computational and laboratory studies on the SZ4D focus areas of Alaska, Cascadia and Chile, as well as other subduction zones offering relevant insights, are particularly welcome.
Conveners
Geoffrey Abers, Cornell University (abers@cornell.edu)
Tiegan E. Hobbs Geological Survey of Canada (thobbs@eoas.ubc.ca)
Andrew Howell, University of Canterbury (andrew.howell@canterbury.ac.nz)
Junle Jiang, University of Oklahoma (jiang@ou.edu)
Duo Li, Earth Sciences New Zealand (d.li@gns.cri.nz)
Camilla Penney, University of Canterbury (camilla.penney@canterbury.ac.nz)
Chris Rollins, GNS Science (c.rollins@gns.cri.nz)
Ignacio Sepulveda, San Diego State University (isepulveda@sdsu.edu)
Lingling Ye, Southern University of Science and Technology (yell@sustech.edu.cn)
Iris van Zelst University of Edinburgh (iris.vanzelst@ed.ac.uk)
Poster Presentations
| Participant Role | Details | Action |
|---|---|---|
| Submission | Comparison of Seismicity Along the Northern and Southern Central Andes and Its Relationship With Along-strike Variations in Andean Deformation | View |
| Submission | Low Frequency Earthquakes in the Alaska Subduction Zone | View |
| Submission | The Cascadia Offshore Subduction Zone Observatory Infrastructure Project | View |
| Submission | Crustal Stress and Faulting in the Pacific Northwest: Insights From an Updated Focal Mechanism Catalog | View |
| Submission | WITHDRAWN Seismic Patterns of the Luzon Arc South of Taiwan | View |
| Submission | A 2D and 3D Community Fault Model for the Cascadia Subduction Zone: Release of CRESCENT CFM Version 1.0 | View |
| Submission | Machine Learning-based High-resolution Earthquake Catalog for the Middle America Trench Using Ocean Bottom and Land Seismometers | View |
| Submission | Dynamic Rupture Modeling of the 2010 Mw 7.8 Mentawai Tsunami Earthquake With Self- Similar Stress Drop and Wedge Inelasticity | View |
| Submission | Monitoring Seafloor Deformation in Taiwan via Ocean-bottom Geodetic Instrumentation | View |
| Submission | Ensemble Analysis of Large Megathrust Earthquakes: From Rupture Heterogeneity to Stress Changes and Ground Motion | View |
| Submission | Machine Learning Detection of Offshore Tremor in the Cascadia Subduction Zone Using Multi-year Continuous Offshore and Onshore Seismic Data | View |
| Submission | WITHDRAWN Investigating Interseismic Vertical Land Motion Along the Cascadia Subduction Zone Using High-resolution Diatom-based Paleogeodesy and Radiocarbon Chronologies | View |
| Submission | Using Seafloor Geodesy to Constrain Gorda Plate Kinematics and Shallow Megathrust Locking in Southern Cascadia | View |
| Submission | Evaluating Seismic Hazards for Carbon Storage on the Scotian Shelf Offshore Nova Scotia | View |
| Submission | PACSAFE LEG2: Investigating Seismicity in the Northern Segment of the Queen Charlotte Triple Junction Using a Year-long OBS Deployment | View |
| Submission | A Surface-in-cell Approach to Including Evolving Faults in Geodynamic Models | View |
| Submission | Forearc Seismic Structure at the Alaska Peninsula Revealed From AACSE Receiver Functions | View |
| Submission | Revisiting the Tectonic Geomorphology of the Nicaragua Segment of the Middle America Trench Using Newly Collected High-resolution Bathymetry and Reprocessed Marine Seismic Reflection Data | View |
| Submission | Subduction, Faulting and Earthquake Interaction Across the Cook Strait of New Zealand | View |
Linking Subduction Zone Processes and Cascading Hazards in Alaska, Cascadia, Chile and Beyond [Poster]
Description