Fig. 2From: Temporal variation in the resistivity structure of the first Nakadake crater, Aso volcano, Japan, during the magmatic eruptions from November 2014 to May 2015, as inferred by the ACTIVE electromagnetic monitoring systemVertical slices in the N75°E direction of inversion results using ACTIVE datasets from August 2014 and August 2015. The right column shows the difference between the two inversion results. Red and blue shading corresponds to decrease and increase in resistivity, respectively. For the selection of the masked area, see Additional file 1: Fig. S4Back to article page