Electromagnetic remote sensing
of the Earth's plate boundaries

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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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Last updated: December 19, 2000