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Earth, Planets and Space
Fig. 2 | Earth, Planets and Space

Fig. 2

From: Estimating the ashfall volume for a small eruption using ellipse-approximated isopach analysis: how many seeking points are required to determine a suitable axis?

Fig. 2

Ashfall distribution map of the June 27, 2018 eruption. Numerical values are the amounts of ashfall (g/m2). Values with parentheses have lower accuracy. Marks of the points as volcanic ash abundant (++), normal (+), faint (−), and not detected (nd). Gray dashed lines are the 0 and 40-g/m2 isolines obtained via the field survey

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