Harvard College Professor and Professor of Geophysics Chair, Department of Earth & Planetary Sciences Ph.D., Cambridge University, 1986
Planetary magnetic fields, dynamo theory, structure and dynamics of the earth's core and lower mantle, inverse theory, mathematical geophysics.
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Department of Earth and Planetary Sciences 20 Oxford Street Cambridge, MA 02138 Telephone: (617) 495-9517 Fax: (617) 495-7660
