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Fig. 4. | Earth, Planets and Space

Fig. 4.

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

Fig. 4.

Real and imaginary parts of the exact surface impedance given by Eq. (4) for a two-layer earth, and the imaginary part of the approximate surface impedance given by Eq. (16). The thickness of the upper layer is 10 km. The conductivities of the upper layer and of the bottom are 10-4 Ω-1 m-1 and 1000 Ω-1 m-1, respectively. The quantities are plotted as functions of the frequency (=ω/2π).

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