Fig. 8
From: Magnetotelluric transect of Unzen graben, Japan: conductors associated with normal faults
a Cross section of the seismic reflection survey and interpretation (modified from Matsumoto et al. 2012). Red dashed ellipse in the center of the profile marks a possible conduit. b N–S vertical slice of the 3-D resistivity structure. (Location is shown in Fig. 4.) c The figures a, b are overlaid. Inverted triangles show MT measurement sites (large triangles: MT sites; small triangles: telluric sites). White dashed lines indicate the inferred deep extension of faults (CF Chijiwa Fault, KF Kusenbu Fault, OF Oshidorino-Ike Fault; shorter lines are minor or unnamed faults). Pressure source B is indicated by a red solid circle. Black dashed arrows represent the inferred movement of released volatiles. See text for details