Fig. 4.
From: 3D numerical simulation of volcanic eruption clouds during the 2011 Shinmoe-dake eruptions
3D distributions of marker particles at 600 s from the eruption initiation, with (a) side view from the south, (b) top view, and (c) side view from the east shown; the viewing directions in (b) and (c) are indicated by arrows in (a). Particle colors represent particle sizes, ranging from 0.0625 mm (4ϕ) to 64 mm (−6ϕ). Parameters used and vent conditions are given in Table 1.