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Earth, Planets and Space
Fig. 5. | Earth, Planets and Space

Fig. 5.

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

Fig. 5.

Relationship between the drain-back rate (volume/100 days) and the viscosity (Pa s) of the lava. Both axes are logarithmic. Inclined lines show the drain-back rate and viscosity according to the equation in the text for different conduit radii (r = 3, 5, 10, or 15 meters). The horizontal line at (12.1–15.1) * 106 m3 shows the total amount of effused lava (Kozono et al., 2013). The estimated value and error of lava viscosity are shown by vertical dotted lines. The inclined oval symbol shows the optimal estimate of the viscosity and conduit radius for the lava erupted from the Shinmoedake volcano in 2011, suggesting that less than 1 percent of the total lava may have drained back within 100 days of emplacement.

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