Fig. 4.From: Transition in eruption style during the 2011 eruption of Shinmoe-dake, in th Kirishima volcanic group: Implications from a steady conduit flow modelCritical permeability exponent ω c as a function of R c and R w , below which magma is fragmented at some depth in the conduit. Common parameters are T = 980°C, n0 = 4.0 wt%, L = 6 km, discharge rate = 87 m3/s. (a) Critical gas volume fraction 75%, (b) 70% and (c) 80%.Back to article page