Abstract

Travel times for the seismic core waves, PKP, PKS, and SKS, were computed by integration along the travel paths. For this purpose the velocity distribution within the earth was broken into segments which were represented by continuous functions. Except for rays of grazing incidence to the outer core the times calculated for PKP and PKS are intermediate between the smoothed times given by Jeffreys and times based upon recent observed data. The times calculated for SKS are in fair agreement with the smoothed times given by Jeffreys.

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