Ground-motion relations for eastern North America, Bull. Shallow structure of the Illinois Basin from fundamental and higher-mode regional surface wave dispersion, Ph. D. Dissertation , Saint Louis University, 243pp. Dispersion of short period Rayleight waves with the Ozard Uplift and Illinois Basin, Seism. For more details, get in touch with him. These are average values compiled from various sources which used different shearwave determination methods.
Question marks are where a lack of data exists and values are best estimates.
Create a new directory in and MS-DOS window. Go to that directory. Copy rbhsm18.exe to that directory, and execute the program. It is only necessary to find a suitable version of make Purpose and use of the program dorvt180 . The file tavd.out is the time series outout, and will be very large.