Electromagnetic remote sensing
of the Earth's plate boundaries
Martyn Unsworth, Ph.D.
University of Washington
Wednesday, May 27, 1998
3:30 p.m. – Pacific Forum
In recent years electromagnetic remote-sensing techniques have greatly improved in
their ability to image the internal structure of the Earth. They are effective in mapping
regions of sub-surface fluids, owing to the low electrical resistance associated with
these fluids. In this presentation I will outline in a non-technical approach how these
techniques work and summarize results from recent studies of:
 | Subduction zones (Cascadia Subduction Zone in Washington) |
| Continent-continent collisions (Tibet) |
| Strike-slip faults ( San Andreas Fault) |
| Mid-ocean ridges ( East Pacific Rise) |
In particular, the role of aqueous and magmatic fluids in these tectonically active
zones will be reviewed.
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