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Magmatic Drivers of Eruption​

What controls the location of volcanoes and the occurrence of eruptions?

Recent seismic and magnetotelluric imaging studies have identified regions of melt and fluid in the mantle wedge that underlie subduction-generated volcanoes. At the same time, magma pathways in the crust have been observed “lighting up” with increases in seismic events between, prior to, and during eruptions, and some magma storage regions “breathe” geodetically between eruptions. New evidence has emerged from petrologic and geochemical studies documenting timescales of magma assembly, transport and run-up to eruption.


Despite these myriad observations of magma on the move, connections between the mantle melting region, the crustal magmatic system and eruption dynamics are poorly understood. We currently have no unifying models that allow us to understand the connections among magma generation, storage, transport, and eruption from the hydration of the mantle wedge above the subducting slab to the volcano at the surface. By considering the mantle melting region and tectonic setting as parts of the volcanic system, SZ4D will provide a fundamentally new way to interrogate and develop long-term forecasts of volcanic system behavior.

Working Group Members

Geoff Abers (Cornell University)

Alvaro Amigo Ramos (SERNAGEOMIN)

*Pete Barry (WHOI) - co-Chair

Ben Black (Rutgers)

Laura Bono Troncoso (SERNAGEOMIN)

John Browning (Pontificia Universidad Catholica de Chile)

Daniel Díaz (Universidad de Chile)

Esteban Gazel (Cornell)

Matt Haney (USGS)

Jeffrey Johnson (Boise State University)

Kayla Iacovino (Jacobs/NASA Johnson Space Center)

*Adam Kent (Oregon State University) - co-Chair

Valbone Memeti (California State University Fullerton)

Carolina Muñoz-Saez (University of Nevada Reno)

Daniel O'Hara (Universiteit Brussel) 

Mike Poland (USGS)

Lizette Rodriguez (University of Puerto Rico at Mayagüez)

Diana Roman (Carnegie)

Francisco Vera (SERNAGEOMIN)

Kevin Ward (South Dakota School of Mines and Technology)

* Steering Committee Member

Planning for the SZ4D Initiative: Meet the Magmatic Drivers of Eruption Working Group (June 2020 Webinar)

Working Group Contact

Adam Kent - Adam.Kent (at)
Pete Barry - pbarry (at)

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