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Geophysics Research
Geophysical research at the Great Basin Center
focuses on the factors controlling
high-temperature geothermal systems in the Great
Basin, including tectonic strain, faulting, and
heat flow. See available data downloads in
the list to the right: |
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Recent advances in GPS technology allow for very precise location
measurements, which in turn can be used to detect subtle crustal
movements and thus directly measure current ongoing crustal strain.
Geoff Blewitt,
Corne Kreemer, and
Bill Hammond of the
Nevada Geodetic Laboratory are
accomplishing this by synthesizing data from several GPS networks
and producing maps of shear and dilational strain for the Great
Basin. Click
here for more information. |
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Gravity data can be
filtered to emphasize near-surface gravity differences that help
identify major through-going faults that serve as conduits for
geothermal fluids. Similarly, satellite radar imagery (InSAR) can
show areas of local ground subsidence or swelling associated with
the removal or injection of geothermal fluids.
Gary Oppliger of the
Arthur Brant Laboratory for
Exploration Geophysics ('ABLE Lab') is the primary researcher
exploring this avenue. |
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What is the thickness of the crust
underneath the Great Basin? Are there areas where thinner crust
corresponds to higher heat flow and high-temperature geothermal
systems? John Louie of the
UNR
Seismological Laboratory is finding out. |
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