531473.fig.004a
(a)
531473.fig.004b
(b)
Figure 4: The GDS data represented as real part (a) and imaginary part (b) of the magnetic inductions vectors. The real part was inverted in accordance with Parkinson’s convention such that the induction arrows point towards more conductive zones. The reference magnitude of the induction arrows is given in the bottom-left corner of each map.