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Fig. 5. | Earth, Planets and Space

Fig. 5.

From: Derivation of characteristics of the relation between geomagnetic and geoelectric variation fields from the surface impedance for a two-layer earth

Fig. 5.

Real and imaginary parts of the exact surface impedance given by Eq. (4) for a two-layer earth, and (the real part of) the approximate surface impedance given by Eq. (21). The thickness of the upper layer is 3 km. The conductivities of the upper layer and of the bottom are 5·10-3 Ω-1 m-1 and 10-8 Ω-1 m-1, respectively. The quantities are plotted as functions of the frequency (=ω/2π).

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