Research Article

Characterization of Geotomographic Studies with the EMRE System

Figure 3

The attenuation presented as a function of conductivity in various materials. The relative permittivity ranges between and (water). The relative permeability is fixed at the free space value (1). (a) Frequency 312.5 kHz, (b) frequency 625 kHz, (c) frequency 1250 kHz, and (d) frequency 2500 kHz.
401654.fig.003a
(a)
401654.fig.003b
(b)
401654.fig.003c
(c)
401654.fig.003d
(d)