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

Table 3

Gravitational dispersion of puff number 1.

Gravitational deformation and size
Puff mass	14	Tons
Initial rad	600	m
Measured rad	1250	m
	885	sec
	0,00008
estimated, = 0,1	0,0008
Inversion temp diff.	0,2	°C
Final puff height	272	m
Gradient:	26,7	gr/m
Diff. front velocity:	0,77	m/sec
Downwind radius increase**	1476	m

from Table 2, thickness for mixing layer in Figure 4.
Migration in downwind time in Table 1.