Recent Professional Activities: Co-Guest Editor, Special Section of Journal of Geophysical Research on "Volcanic and Hydrothermal Processes at the Southern Juan de Fuca Ridge", in March, 1994 issue. Member of NSF RIDGE Steering Committee- 1995 to present Member of working group for NSF RIDGE Observatory Experiment Member of working group for NSF RIDGE Event Detection and Response Member of American Association for the Advancement of Science and the American Geophysical Union Current Research Interests: (1) Relationships between tectonics, volcanic and hydrothermal processes on seafloor spreading centers, concentrating on the Juan de Fuca Ridge off Oregon/Washington. (2) Structure and tectonics of transform fault zones.