Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published April 1960 | Published
Journal Article Open

The Walnut, California, earthquakes of July-August, 1959


A swarm of minor earthquakes began on July 29, 1959, near 34° 00′ N, 117° 48′ W. Records at Pasadena show P and S waves reflected from the Moho. A portable instrument recorded some of these at a point about 6 km. from the epicenter. The characteristic false S - P of about one second at short distances was recorded.

Additional Information

Copyright © 1960, by the Seismological Society of America. Manuscript received for publication October 7, 1959. Work on these shocks was carried out largely on funds provided by the National Science Foundation project NSF-G6065. In the operation and maintenance of the temporary stations, the authors wish to acknowledge the generous cooperation of Mr. Shelton Alexander, Mr. David Harkrider, and Mr. Stewart Smith.

Attached Files

Published - 181.full.pdf


Files (278.7 kB)
Name Size Download all
278.7 kB Preview Download

Additional details

August 19, 2023
October 26, 2023