Areas of expertise:
Petrology and geochemistry of intermediate and felsic magmas; micro-analysis of trace volatile and light lithophile elements by ion microprobe, inductively-coupled plasma mass spectrometry laser, and electron microprobe studies; understanding physical processes and forecasting eruptions at active subduction-zone volcanoes; geochemistry of volcanic gases, their use for eruption prediction, and their impact on the atmosphere; new infrared remote sensing techniques to measure gases at active volcanoes; integration of geological, geochemical, and geophysical datasets to model volcano plumbing systems.