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Earthquake magnitude, intensity, energy, and acceleration

Gutenberg, B. and Richter, C. F. (1942) Earthquake magnitude, intensity, energy, and acceleration. Bulletin of the Seismological Society of America, 32 (3). pp. 163-191. ISSN 0037-1106. doi:10.1785/BSSA0320030163.

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The magnitude of an earthquake was originally defined by the junior author (Richter, 1935), for shocks in southern California, as the logarithm of the maximum trace amplitude expressed in thousandths of a millimeter with which the standard short-period torsion seismometer (free period 0.8 sec., static magnification 2800, damping nearly critical) would register that earthquake at an epicentral distance of 100 kilometers. Gutenberg and Richter (1936) extended the scale to apply to earthquakes occurring elsewhere and recorded on other types of instruments.

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Additional Information:Copyright © 1942, by the Seismological Society of America. Manuscript received for publication January 29, 1942.
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Balch Graduate School of the Geological Sciences332
Issue or Number:3
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47731
Deposited By: George Porter
Deposited On:31 Jul 2014 22:12
Last Modified:10 Nov 2021 17:49

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