since 1997.4.2.

Hayakawa's 2000-year eruption catalog

• 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.