The 1978 Yellowstone-eastern Snake River Plain seismic profiling experiment: data and upper crustal structure of the Yellowstone region( Idaho, Wyoming).

Abstract

Eleven in-line refraction profiles, recorded to distances of 300km, and one azimuthal fan plot were constructed from data recorded with a 150-station array in the Yellowstone National Park area during the 1978 Yellowstone-Snake River Plain seismic experiment. Interpretations of the data suggest that the crustal P wave velocity model for the Yellowstone region is characterized by 1) an averaged 10km-thick upper crustal layer, Vp = 6.0km/s, 2) an average crustal velocity of 6.3km/s, and 3) a total crustal thickness of 44km. Velocity models are presented for profiles that emphasize the upper crust.-Authors