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An AGU Session

The SZ4D Experiment: Comparing Subduction Zone Processes Across Margins | ORAL & POSTER SESSIONS

December 8, 2026

8:30-10AM Local Time

Moscone Center

Open to all - AGU registration required

Objectives

Compare subduction zones to identify the processes controlling geohazards, understand interactions between tectonics and surface processes, and improve predictive models of earthquakes, volcanic eruptions, landslides, and tsunamis.

Please join us on Tuesday, December 8, and Wednesday, December 9 for the SZ4D oral and poster sessions: The SZ4D Experiment: Comparing Subduction Zone Processes Across Margins.


Session Description


Understanding the processes controlling landslides, earthquakes, volcanic eruptions and tsunamis requires utilizing natural experiments to identify and isolate driving factors. How do climate and tectonics interact to determine the susceptibility to landslides? What is the relative importance of magma supply, upper plate structure, and crustal stress regime in controlling eruptive frequency? Are the size and location of earthquakes affected by structural boundaries, fluids, and fault geometry? How prevalent are cascading hazards over time? These and other geohazard questions can be addressed by studying behaviors across subduction zones or along subduction zones with contrasting segments. Ultimately, this understanding should motivate advances in predictive models. We invite observational, theoretical, laboratory, and modeling contributions that leverage the power of comparison across multiple subduction zones or along multiple subduction zone segments to develop new insights or test predictive models. Studies incorporating the SZ4D focus areas of Cascadia, Alaska and Chile are particularly welcome.


The SZ4D Science Program at the AGU Fall Meeting


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Organizers

Primary Convener: Brandon Schmandt (Rice University)

Conveners: John B Naliboff (New Mexico Institute of Mining and Technology), Adam Kent (Oregon State University), Jeffrey Todd Freymueller (Michigan State University)

Agenda

SZ4D events at AGU Fall Meetings are supported by the National Science Foundation

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