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Published October 1950 | Published
Journal Article Open

Velocities of P at short distances

Richter, C. F.


Recording of P and S at six or more stations to epicentral distances not over 160 km. makes it possible to calculate the velocities, assuming only that they are constant. Origin times, epicenters, and depths are found independently of velocity. Installation of new temporary stations has supplied appropriate data in southern California. For 6 of 8 well-recorded shocks the calculated velocity of P is near 6.4 km/sec.

Additional Information

Copyright © 1950, by the Seismological Society of America. Manuscript received for publication November 21, 1949. Mr. J. M. Nordquist has drafted the figures and assisted with some of the calculations. The writer is indebted to Dr. B. Gutenberg for much helpful discussion.

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