Fig. 3From: Monochromatic infrasound waves observed during the 2014–2015 eruption of Aso volcano, JapanTime evolution of sizes of pyroclastic cone and its vent. a Size of the pyroclastic cone built at the crater floor (crosses) and the exit of its vent (circles). Red bar indicates the period of the 2014–2015 eruption. b–f Photographs taken from the SSW crater rim showing growth of the pyroclastic cone and its ventBack to article page