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Fine Structure of the Upper Mantle.
Seismic data lab. rept.,
TELEDYNE INDUSTRIES INC ALEXANDRIA VA EARTH SCIENCES DIV
Pagination or Media Count:
The lateral and radial variations of upper mantle elastic velocities are required in considerable detail for an understanding of the physical state of the material in the mantle. This same information is required for any quantitative discussion of tectonics and in general for models of dynamical processes associated with the evolution of the planet. In this study we use the spectral amplitudes and travel times of seismic body waves to determine mantle velocity structures appropriate to distinct structural provinces within the western continental United States. In addition to basic amplitude and time data, travel time delays and Pn velocity data from other studies are used as constraints in the systematic inversion of the data for mantle structure. Author
APPROVED FOR PUBLIC RELEASE