Height of Eruption Column
The height of a volcanic eruption cloud
(in kilometers) is taken from direct observation
or from estimates based upon historic accounts.
For pre-historic eruptions, this scale is calculated
based upon the dispersal of the volcanic products-
i.e how far and wide they are scattered. Volcanic
eruptions that have very tall columns will spread
tephra far and wide.
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Last modified: March 17, 1999
URL: http://www.bigu.edu/web/height.html