How can a volcanic eruption's energy be Calculated?by promeus Tags: energy, kilotons, theoretical yield 

#1
May1212, 06:54 PM

P: 27

The thread title speaks for itself,I am wondering how I would be able to this.
Ex: Volcano A erupts Volcano A yielded 1 kiloton of energy. ^^^How would I calculate that? ^^^ 


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#2
May1212, 08:35 PM

P: 329

More refined calculations could take into the mass of tephra in the plume and the heat lost as the lava cools. I suspect those contributions will not change order of magnitude, and perhaps give the same value to one significant figure. 



#3
May1212, 08:40 PM

Admin
P: 21,637

There is Volcanic Explosive Index  http://volcanoes.usgs.gov/images/pglossary/vei.php
http://en.wikipedia.org/wiki/Volcanic_Explosivity_Index I believe that one option is to calculate the volume of earth ejected from a crater (from before and after pictures) then some assumption of the density is made to calculate the mass and how it was ejected. More recently  "Explosive Energy" During Volcanic Eruptions from Fractal Analysis of Pyroclasts http://www.earthprints.org/bitstrea...l_fractals.pdf 



#4
May1612, 06:04 PM

Sci Advisor
PF Gold
P: 2,244

How can a volcanic eruption's energy be Calculated?one other link I followed the other day was along those lines they look at the energy required to lift say 10 cubic km of rock of "x" density to 510m its gives a reasonably definitive result. cheers Dave 


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