Seismic Refraction (IMAGE)
Caption
Seismic refraction data is collected from geophones that record the arrival of energy sent through the shallow subsurface by sledgehammer blows at the surface. Alec Spears (left) and Troy Covill were University of Wyoming students at the time of the study. Cliff Riebe, an associate professor in UW's Department of Geology and Geophysics, and his research team discovered that weathering of subsurface rock in the Southern Sierra Nevada Mountains of California occurs due more to rocks expanding than from chemical decomposition, as previously thought.
Credit
Russell Callahan
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