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Science 3 September 1976:
Vol. 193. no. 4256, pp. 886 - 888
DOI: 10.1126/science.193.4256.886
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Articles

Yearly Seismic Energy Release: World Totals Versus Ridge System Totals

DANIEL A. WALKER 1

1 Hawaii Institute of Geophysics, University of Hawaii, Honolulu 96822

Yearly seismic energy totals for many different regions of the earth show highs in 1965 and lows in 1967. Correlations found between totals for ridge systems and for the world are attributed to ambient stresses, which are close to those needed for failure in the lithosphere underlying those ridge systems. Energy highs for many different plate edges are thought to be the result of triggering by the large Alaskan earthquake of 1964. Other suggestions of triggering by major earthquakes are found in 1969 and 1971.

Submitted on April 7, 1976
Revised on June 24, 1976

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Science. ISSN 0036-8075 (print), 1095-9203 (online)