Article ID Journal Published Year Pages File Type
4712980 Journal of Volcanology and Geothermal Research 2010 9 Pages PDF
Abstract

The sequence of large Vulcanian explosions occurring at the andesitic Popocatépetl volcano, Mexico during November 1998 to April 1999 was studied. The size of 26 largest explosions was estimated from broadband seismic records at the distance of 4 km from the crater. The sequence began with the largest explosion (E = 2.6 × 1012 J) occurring on 25 November at 08:05, and following largest daily explosions were characterized by gradual decrease in the energy. The energy of 20 large (E ≥ 1011 J) explosions was distributed as Student's t-distribution with a geometrical mean Log E = 11.81 (J).

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Physical Sciences and Engineering Earth and Planetary Sciences Geochemistry and Petrology
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