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Seismicity Of The Earth

B. Gutenberg, Charles Francis Richter

CaltechAUTHORS (California Institute of Technology), 2012

690 citations

Abstract

Previous results are revised and extended. Most of the former conclusions are notably strengthened. \nOver 2000 shallow shocks and about 1000 deep-focus shocks are located. Magnitudes of \ndeep shocks are assigned for the first time. Ninety-two great earthquakes (magnitudes 7 3/4 or over) \nhave been identified for 1904-1945, and 334 major shocks (7.0 to 7.7) for 1918-1945. Geographical \nresults are presented in a new set of maps.

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