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

Fig. 3

From: Temporal variations of plume activities before the 8 October 2016 eruption of Aso volcano, Japan, detected by ground-based and satellite measurements

Fig. 3

Maps of the 10-day averaged SO2 PBL VCDs measured by OMPS from 1 April to 27 October 2016. The period for each map is shown at the right bottom of the map (DD.MM–DD.MM). Location of Aso volcano is depicted with the triangle. The volcanic and SO2-free regions for the SO2 mass calculation (see text) are shown with red and blue rectangles, respectively. The high SO2 VCDs around 140°E in longitude found in 8.10–17.10 map correspond to the SO2 cloud by the 8 October explosion

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