Resistivity sections for profiles L1 (a), L2 (b), L3 (c), and L4 (d) in Figure4. Left and right columns show resistivity models with and without seismic hypocenters, respectively. The black and white dots indicate normal earthquakes and long-period volcanic earthquakes, respectively. The triangles on the surface denote Quaternary volcanoes. M and N indicate the locations of Naruko volcano and Mukaimachi caldera, respectively. Labels for the conductors and resistors correspond to those in Figure 4.