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Academic Background | Research Interests | Bio Sketch | Publications | CV
Mailing Address:
130 Olin Hall
34th and North Charles Streets
Johns Hopkins University
Baltimore, Maryland 21218
U.S.A.
Academic
Background
1977 Ph.D. University of
California, Berkeley
Geophysics
The focus of my research is to
understand the dynamics of
Earth's interior, including both the mantle and the core. I am
especially interested in how these two major parts of the Earth
interact to produce plate tectonics, deep mantle plumes, and the
geomagnetic field.
My approach is to combine theory, numerical models, and laboratory
fluid dynamics experiments, and to use these
to interpret global geophysical data pertaining to the deep
interior of the Earth and other planets.
Lately I have focused on the dynamics of Earth's core,
particularly the magnetohydrodynamic processes by which the
geomagnetic
field
is generated in the fluid outer core, and modified by the
solid
inner core and the lower mantle. I have also been collaborating on
environmental problems related to the Earth's slow carbon cycle and
the rapid melting of polar ice shelves. This work is being done in
collaboration with
colleagues around the world and with graduate students and
postdoctoral
fellows here at Johns Hopkins.
Examples of my recent research include:
Numerical
Models
of the Geodynamo
Polar Vortex Motion in the Core
Zonal Winds generation on the Giant Planets
Rotating Convection
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