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Earth, Planets and Space
Fig. 3. | Earth, Planets and Space

Fig. 3.

From: Transition in eruption style during the 2011 eruption of Shinmoe-dake, in th Kirishima volcanic group: Implications from a steady conduit flow model

Fig. 3.

Representative porosity profiles versus pressure along the conduit between the magma chamber and the vent. Panel (a): Conduit radius, R c = 5 m; Fraction of lateral gas escape, E w = 0. Panel (b): R c = 20 m; Ew = 0. Panel (c): R c = 20 m; E w = 0.5. Parameters used in the calculations are T = 980°C and discharge rate = 87 m3/s for all lines. (i) n0 = 2.0 wt%, ω = 3.8, (ii) n0 = 2.0 wt%, ω = 3.0, (iii) n0 = 4.0 wt%, ω = 3.8, (iv) n0 = 4.0 wt%, ω = 3.0.

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