My research involves marine geophysical studies of the formation and early evolution of the Earth's oceanic crust at mid-ocean ridges, magma chamber processes, crustal evolution within plate interiors, and subduction zone properties. I make use of marine reflection seismic imaging, as well as other marine geophysical methods including sonar mapping, magnetics, gravity, and deep submergence studies. I am also involved in the development of cyberinfrastructure for geosciences providing data tools and services for the academic marine geoscience community. I have been a participant on 16 marine research expeditions since 1986, 7 as Chief, Co-Chief or co-PI. My field-work includes expeditions in the Pacific and Atlantic Oceans as well as near shore studies of sediment processes in the New York region.