The SZ4D
Implementation Plan
The SZ4D Implementation Plan has been released in the Fall 2022.
The report, built and revised upon community input, lays out the key science priorities, focused field and laboratory infrastructure, modeling and computational capability, and building equity and capacity efforts.
Preferred Citation
Hilley, G. E. (ed.), Brodsky, E.E., Roman, D., Shillington, D. J., Brudzinski, M., Behn, M., Tobin, H. and the SZ4D RCN (2022). SZ4D Implementation Plan. Stanford Digital Repository.
Acknowledgments
We gratefully acknowledge the intellectual contributions of the 3400 participants in SZ4D activities between 2020-2022. The generous and deep commitment of the community has built this plan during some of the most difficult years of our personal and professional lives. SZ4D efforts have been supported under NSF grants EAR-1828096, EAR-1824343 and EAR-2221947.
This document is the final report of both the SZ4D RCN and the MCS RCN, which were supported under the first two of these awards.

Contents
ES
Scientific and societal rationale
1
Rationale for an SZ4D initiative
2
An integrated vision for subduction zone hazards
3.1
Faulting and Earthquake Cycles
When and where do large earthquakes happen?
3.2
How do subduction zones control surface hazard and landscape evolution?
3.3
What controls the location of volcanoes and the occurrence of eruptions?
4.1
Building Equity and Capacity with Geoscience
Toward an inclusive science community and broader understanding of geohazards to address social justice and equity issues in hazard mitigation
4.2
Modeling Collaboratory for Subduction
Toward an integrative community framework for subduction zone models
5.1
Identifying SZ4D regions of special interest
5.2
Building partnerships for an integrative SZ4D
5.3
A
Appendices
Editing and Production
Ellen Kappel . . . . . . . . . . . . . . . . . . Editing, Geosciences Professional Services Inc.
Anaïs Férot . . . . . . . . . . . . . . . . . . . . . . . . . . Production, SZ4D UC Santa Cruz