In September 2004, Stanford University and UT Austin collected crustal reflection/refraction data with the Network for
Earthquake Engineering Simulation (NEES) tri-axial (T-Rex) vibrator. Data were collected in two separate surveys: (1) a 40 km crustal scale profile, and (2) a 16 km ‘high-resolution’ basin imaging profile. Both experiments were completed in the northwestern Basin and Range transition zone as part of a larger, 300 km wide-angle refraction line, recorded by an IRIS-PASSCAL transportable array. The broad goals were to test the feasiblility of the T-Rex in crustal-scale applications with existing IRIS-PASSCAL recording equipment, and to augment our refraction data with structural information.
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