I am interested in the mechanics of how magma moves through the Earth's crust, and in the structure, evolution, and dynamics of volcanic conduit systems. Most of my research focuses on understanding changes in seismicity and stress in response to the migration of magma through volcanic conduits, and on developing techniques and strategies for monitoring active or restless volcanoes through the analysis of high-frequency volcanic seismicity. Additional research interests include source processes of background seismicity at quiescent volcanoes, tectonic and 'cryptovolcanic' microearthquake swarms, and the nature of volcanic intrusions ('failed' eruptions). As an offshoot of earlier research on volcanic glass compositions, I also work on the Dikika Research Project in Ethiopia, and was involved in establishing the geological context and age of the 3.3 Ma juvenile A. Afarensis fossil, "Selam" (DIK-1/1).
Effect of Regional Tectonic Setting on Local Fault Response to Episodes of Volcanic Activity (with Philip Heron), Geophysical Research Letters (2007)
In this study we examine the interaction of tectonic and volcanically-generated stress fields, and their...