Massachusetts Institute of Technology, Cambridge, MA
Ph.D., Earth and Planetary Sciences, 1975
Thesis: Plastic Flow of Single-Crystal Olivine; Advisor: C. Goetze
Cornell University, Ithaca, NY
B.S., Engineering Physics, 1969
2006 - present
Massachusetts Institute of Technology, Cambridge, MA
Senior Research Scientist, Earth, Atmospheric, and Planetary Sciences Department
1977 – 2006
Lawrence Livermore National Laboratory, Livermore, CA
Physicist, Earth Sciences Department, Experimental Geophysics Group
General research interests: Experimental investigation of the effect of pressure, temperature, and chemical environment on the physical properties of rock and the relationship of those physical properties to crack, pore, and dislocation structures.
1994 – 1995
Bayerisches Geoinstitut, Bayreuth, Germany
(one-year sabbatical leave from LLNL) Experimental deformation of single and polycrystalline olivine at mantle pressure and temperatures.
1985 – 1986
Institüt für Physikalische Chemie und Elektrochemie
Universität Hannover, Hannover, Germany
(one-year sabbatical leave from LLNL) Experimental studies of (1) the effect of nonhydrostatic stress on chemical potential, and (2) sublimation of forsterite.
1975 – 1977
University of Paris, Orsay, France
Research Associate, Centre National de la Recherche Scientifique
Investigation of (1) the diffusion of oxygen in forsterite as a function of temperature and pressure, and (2) the deformation of forsterite at high temperature and very low stress.
Physical properties of mantle materials at in situ conditions, with emphasis on the mineral olivine and in particular phase transformation kinetics and mechanical properties.Flow and fracture of solid water, carbon dioxide, nitrogen, and other ices and icy mixtures of planetary significance to temperatures as low as 30 K and pressures to 1 GPa.Physical properties and reaction kinetics of gas clathrate hydrates.
Alexander von Humboldt Fellowship (Fed. Republic of Germany) 1985 – 1986
Associate Editor Journal of Geophysical Research-Solid Earth 1989 – 1996
Alexander von Humboldt Senior U.S. Scientist Award, 1994 – 1995
American Geophysical Union Publications Committee, 1994 – 1996
American Geophysical Union Fellow, 2003
German National Academy of Sciences Leopoldina, elected 2012