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Earthquake study in southern California, 1945

Gutenberg, B. and Richter, C. F. (1946) Earthquake study in southern California, 1945. Transactions, American Geophysical Union, 27 (4). pp. 559-560. ISSN 0002-8606. doi:10.1029/tr027i004p00559.

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This continues the previous report of Gutenberg and Richter [see “References” at end of report, 1945 a]. Three papers reported as in press in 1945 have since appeared [Gutenberg, 1945 a and b; Gutenberg and Richter, 1945 b]. Wood's paper [pending] on local epicenters and fault structure in Southern California has been submitted to the Seismological Society of America. As the first paper of Gutenberg and Richter [1941] on seismicity of the Earth is now out of print, a revision has been undertaken, incorporating the results of the supplementary paper [Gutenberg and Richter, 1945 b] and much new material. No epicenter has been accepted from the International Summary or any other source without careful revision. A large file of individual station bulletins has been accumulated through correspondence, as exchange or on loan. This has facilitated assigning magnitudes, and has much improved the statistics of large shocks. Magnitudes have been assigned to all shocks, shallow and deep, of magnitude 6 or larger, used in the study. For further statistical investigation the data have been entered on punch cards, which now number about 2500 for shallow earthquakes, and over 1000 for deep shocks. It is hoped that it will be possible to publish the full list of epicenters.

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Additional Information:© 1946 American Geophysical Union. Manuscript received April 27, 1946; read by JAMES B. MACELWANE at the Twenty-Seventh Annual Meeting, Washington, D. C., May 27, 1946; open for formal discussion until January 1, 1947.
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Balch Graduate School of the Geological Sciences385
Issue or Number:4
Record Number:CaltechAUTHORS:20211105-174057194
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Official Citation:Gutenberg, B., and Richter, C. F. (1946), Earthquake study in southern California, 1945, Eos Trans. AGU, 27(4), 559– 560, doi:10.1029/TR027i004p00559
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:111768
Deposited By: Tony Diaz
Deposited On:05 Nov 2021 21:14
Last Modified:05 Nov 2021 21:14

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