Fig. 5From: Three-dimensional inversion of audio-magnetotelluric data acquired from the crater area of Mt. Tokachidake, JapanSpatial visualization of the porosity beneath the active craters. a The porosity distribution calculated with the fluid resistivity 1.2 Ωm. b The porosity distribution calculated with the fluid resistivity 2.0 Ωm. c The porosity distribution calculated with the fluid resistivity 0.7 ΩmBack to article page