Fig. 9.From: Ballistic ejecta and eruption condition of the vulcanian explosion of Shinmoedake volcano, Kyushu, Japan on 1 February, 2011Relationship between impact velocity (v f ) and radius of the impact crater (R) for different mass of ballistics (m = 0.3−3.2 ton) and different soil properties (μ). Solid lines are for μ = 0.41, broken lines for μ = 0.5.Back to article page