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Earth, Planets and Space
Fig. 4. | Earth, Planets and Space

Fig. 4.

From: Viscosity of andesitic lava and its implications for possible drain-back processes in the 2011 eruption of the Shinmoedake volcano, Japan

Fig. 4.

Relationship between eruption rate and conduit radius for the initial Plinian phase of the 2011 eruption of the Shinmoedake volcano, following the CONFLOW model of Mastin (2002). Effect of temperature on the mass flux vs. conduit radius is shown for 925 and 940°C, whereas effect of water content is shown for 4 and 5 wt.%. The eruption rate for the sub-Plinian eruption is 9 × 105−1.85 × 106 kg/s calculated by assuming density of magma of 2000–2500 kg/m3 from the volumetric eruption rate of 450–741 m3/s (Kozono et al., 2013).

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