Seasonal variations of volcanic eruption frequencies

Details Seasonal variations of volcanic eruption frequencies Seasonal variations of volcanic eruption frequencies

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989georl..16..453s&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 16, May 1989, p. 453-455.

Statistics

5

Annual Variations, Periodic Variations, Volcanoes, Latitude, Statistical Analysis, Statistical Tests

Scientific paper

Do volcanic eruptions have a tendency to occur more frequently in the months of May and June? Some past evidence suggests that they do. The present study, based on the new eruption catalog of Simkin et al.(1981), investigates the monthly statistics of the largest eruptions, grouped according to explosive magnitude, geographical latitude, and year. At the 2-delta level, no month-to-month variations in eruption frequency are found to be statistically significant. Examination of previously published month-to-month variations suggests that they, too, are not statistically significant. It is concluded that volcanism, at least averaged over large portions of the globe, is probably not periodic on a seasonal or annual time scale.

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