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Table 5.
Parameters used to construct the volcanic plume images.
| Parameter | Comment |
|---|---|
| Equation (55) with tmax = 500 s | The volcanic plume |
and  as the time- |
ejected dust for 1000 s |
| dependent dust production rate | |
| Equation (50) with q = 3.0, | |
| R1 = 0.2 μm, and R2 = 20 μm | |
| is used as the size distribution | |
| The ejection speed is uniformly | The narrow range of initial |
| distributed between | velocities allows us to obtain |
| 700 m s−1 and 750 m s−1 | the umbrella-shaped plume |
| Equation (51) with ψmax = 0° | The jets are very narrow, |
| and ω = 5° is used as the distribution | but there is a nonzero probability |
| of the ejection direction | of ejection in any direction |
| Rmin = 0.2 μm | We observe the particles with the sizes |
| Rmax = 0.4 μm | close to the optical wavelength range, |
| so that the radii are twice smaller | |
| p = 2 | We are interested in the area |
| covered by the particles | |
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