Airborne Measurement in the Ash Plume from Mount Sakurajima: Analysis of Gravitational Effects on Dispersion and Fallout

Table 2

Diffusion properties and scaling of puff number 1.

Diffusion parameters			Puff size and grain size			Scaled puff
( = 4 Kt)	1630	Meters	Puff mass	363*	Tons	Puff mass	17805	Tons
	346	m^2/s	SVO est.	1697*	Tons	Scaled	2424	m^2/s
Correl.	98%	e-(r/a)^2	Total rad	3357*	m	Total rad	8886	m
St error	984	gr/m^3	Visible rad	1660*	m	Visible	4395	m
Center	15081	gr/m^3	Eff. rad	1791*	m	Eff. Rad	4740	m
Aerosol	21	%	m	m	m	m	m	m
			10,1	4,7	1,4	13,2	6,2	1,8

Three explosions, 831 + 722 + 144 = 1697 tons 15.1.2013 09:50–9:52.