Implications of Self-Potential Distribution for Groundwater Flow System in a Nonvolcanic Mountain Slope

Figure 7

Comparison of the geological setting, SP distributions, and hydrological information along the northern slope of Mt. Tsukuba. (a) Geological structure [20]. Note that the surface layer is exaggerated vertically. (b) Raw and regional SP profiles are same as shown in Figure 5. (c) Histogram for number of springs around Mt. Tsukuba against altitude derived from [23]. (d) Specific discharge of the Ono-kawa river water [22]. (e) Mean residence time of stream water [21].