His research primarily uses observational seismology to investigate tectonic and magmatic processes. Recently he is involved in a collaborative project to investigate melt generation, melt transport, and crustal evolution in the Cascades arc at Mount St. Helens (www.imush.org). The project includes multi-scale seismic arrays, magnetotelluric imaging, and petrologic analyses. The subset of the seismic studies lead by UNM uses two weeks of continuous recording with a 900-geophone array concentrated within about 12 km of Mount St. Helens. Presentations will largely focus on this hybrid active and passive source portion of the project and place those results in the broader context of recent advanced views of magmatic processes at Mount St. Helens.