Frequency-Dependent Streaming Potential of Porous Media—Part 2: Experimental Measurement of Unconsolidated Materials

Figure 2

Normalised electrical impedance data for (a) Ottawa sand, and glass beads with (b) 𝑑=0.5 mm, (c) 𝑑=1 mm, and (d) 𝑑=2 mm.

(a) Ottawa  sand

(b) Glass beads, 𝑑=0.5mm

(c) Glass beads, 𝑑=1mm

(d) Glass beads, 𝑑=2mm