since 1997.4.2.

Hayakawa's 2000-year eruption catalog

Go to 2000-year eruption database, Aug. 2008

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• World (>M3.8; 287 eruptions) as of 1996.11.24
• Japan (405 eruptions) as of 1999.6.8

* Year is in AD. J means Julian calendar.
* M is Magnitude. It is defined as M = log m - 7, where m is the mass of magma (tephra and lava) in kg.

REFERENCES:
*Japan Meteorological Agency (1991) Volcanoes in Japan. (in Japanese)
*Simkin T, Siebert L (1994) Volcanoes of the World. Geoscience Press, Tucson AZ, 345p.

Please send your comments to:
mailing list tephra or hayakawa@edu.gunma-u.ac.jp.
Complaints to tephra namings are welcome.

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