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Earthquake of January 28, 1931

Richter, Charles F. (1931) Earthquake of January 28, 1931. Bulletin of the Seismological Society of America, 21 (4). p. 284. ISSN 0037-1106.

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On January 28, 1931, at 12:50 a.m., P.S.T., occurred an earthquake which was perceptible over a limited area in the southwestern section of the city of Los Angeles. The seismographic amplitudes were only a few millimeters at the Pasadena station, distant twenty-one kilometers. Field investigation showed that the stronger effects, probably nowhere exceeding IV on the Rossi-Forel scale, were confined to an area about one and one-half kilometers in radius, centering at latitude 34°00'N., longitude 180°19'W. This point is near the intersection of Forty-eighth Street and Second Avenue, Los Angeles. The shock was perceptible in most directions only to a distance of about three kilometers from the center given; but to the south and southeast it was felt very slightly to a distance of about ten kilometers.

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Additional Information:Copyright © 1931, by the Seismological Society of America.
Issue or Number:4
Record Number:CaltechAUTHORS:20140804-155853789
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47942
Deposited By: George Porter
Deposited On:05 Aug 2014 14:47
Last Modified:03 Oct 2019 06:58

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