Magmatic Drivers of Eruption​

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

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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

Pete Barry                    WHOI

Ben Black                     CCNY

Claire Bucholz             Caltech

Simon Carn                  Michigan Tech 

Esteban Gazel             Cornell

Trish Gregg                  University of Illinois

*Matt Haney                US Geological Survey

*Chris Huber                Brown University

Shaul Hurwitz               US Geological Survey

*Adam Kent                 Oregon State University
Eric Kiser                      University of Arizona
Pete LaFemina             Penn State

Yves Moussallam          LDEO

Carolina Muñoz-Saez   University of Nevada Reno

*Diana Roman              Carnegie

*Christy Till                   Arizona State University

Rick Wessels                 US Geological Survey

Heather Wright            US Geological Survey

Wenlu Zhu                    University of Maryland

* Steering Committee Member

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

Interest Group Contact

Diana Roman - droman (at)