What is the average amount of time a volcano erupts for?

What is the average amount of time a volcano erupts for? and What is the average amounts of times a volcano erupts in a year ?

Jason A. and Tiffany O.

Dear Jason and Tiffany,

Most eruptions last between 10-100 days. About 50 volcanoes are active each year.

Steve Mattox, University of North Dakota

Sources of Information:
Simkin, T., and Siebert, L., 1994, Volcanoes of the World: Geoscience Press, Tucson, Arizona, 349 p.


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