Fig. 2From: Altitude effects of localized source currents on magnetotelluric responsesMT responses at a period of 20 s: (left) relationship between the apparent resistivity and the altitude of the source current. (right) Relationship between the phase and the altitude of source current. The black/blue/green/red circles denote the responses derived from the horizontal distances of 1/10/100/1000 km, respectively. The black/blue/green/red crosses denote the responses derived from the horizontal distances of 5/50/500/5000 km, respectivelyBack to article page