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NSF PR 03-120 - October 15, 2003
Note About
Images
Image 1
EarthScope will drill directly into the earthquake zone of the San
Andreas Fault to measure changes in rock properties before, during, and
after earthquakes. Linked to other EarthScope measurements at the surface,
these direct observations will, for the first time, monitor how an active
fault and responds to regional and local changes in stress.
Credit: EarthScope
Image 2
EarthScope will use a transportable array of 400 seismic instruments
that will gradually roll across the entire United States over a ten-year
period, making observations for one to two years at some 2000 sites.
Credit: EarthScope
Image 3
EarthScope will use an array of permanent stations equipped with global
positioning satellite receivers and strainmeters, extending along the
western margin of North America from Mexico to Alaska to monitor the
boundary of the North American plate. Clusters of additional instruments
will be installed on volcanoes, along the San Andreas fault system and near
other major faults, to provide detailed measurements in areas of rapid
deformation.
Credit: EarthScope
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