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Two proposed measures of seismicity

St. Amand, Pierre (1956) Two proposed measures of seismicity. Bulletin of the Seismological Society of America, 46 (1). pp. 41-45. ISSN 0037-1106.

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Two measures of seismic activity are proposed. The first, called specific seismicity is the sum of the energy released by all the earthquakes occurring in an area in a given time, divided by the area and the time. The second is called tectonic flux and is the sum of the square roots of the energies of all the earthquakes occurring in a given area in a given time, divided by the area and the time. Tectonic flux is proportional to the rate of strain release in the area. Maps contoured in either measure are convenient for expressing the seismic activity of a region.

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Additional Information:Copyright © 1956, by the Seismological Society of America. Manuscript received for publication, July 29, 1954. The author is indebted to Drs. Beno Gutenberg, C. F. Richter, and Hugo Benioff, and to Messrs. H. O. Wood, Ralph Gilman, and John Nordquist, for their assistance and encouragement in the development of this discussion and for the use of the data on the Kern County shocks. John Nordquist drafted the figures.
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Caltech Division of Geological Sciences687
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ID Code:48025
Deposited By: George Porter
Deposited On:06 Aug 2014 14:20
Last Modified:03 Oct 2019 06:59

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