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The magnitude distribution of earthquakes near Southern California faults

Page, Morgan T. and Alderson, David and Doyle, John (2011) The magnitude distribution of earthquakes near Southern California faults. Journal of Geophysical Research B, 116 . Art. No. B12309. ISSN 0148-0227.

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We investigate seismicity near faults in the Southern California Earthquake Center Community Fault Model. We search for anomalously large events that might be signs of a characteristic earthquake distribution. We find that seismicity near major fault zones in Southern California is well modeled by a Gutenberg-Richter distribution, with no evidence of characteristic earthquakes within the resolution limits of the modern instrumental catalog. However, the b value of the locally observed magnitude distribution is found to depend on distance to the nearest mapped fault segment, which suggests that earthquakes nucleating near major faults are likely to have larger magnitudes relative to earthquakes nucleating far from major faults.

Item Type:Article
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Doyle, John0000-0002-1828-2486
Additional Information: © 2011 American Geophysical Union. Received 14 August 2010; revised 16 September 2011; accepted 28 September 2011; published 16 December 2011. We would like to thank J. Woessner and E. Hauksson for providing their rCFM catalog and K. Felzer and J. M. Carlson for many helpful discussions.
Subject Keywords:Community Fault Model; Gutenberg-Richter; Southern California; characteristic earthquakes; magnitude distribution; statistical seismology
Record Number:CaltechAUTHORS:20120123-130627739
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Official Citation:Page, M. T., D. Alderson, and J. Doyle (2011), The magnitude distribution of earthquakes near Southern California faults, J. Geophys. Res., 116, B12309, doi:10.1029/2010JB007933
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:28922
Deposited By: Tony Diaz
Deposited On:28 Feb 2012 23:03
Last Modified:26 Nov 2019 11:15

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