
TY  - JOUR
A1  - Petersons, H.F. 
T1  - Electromagnetic induction in the Earth using long period geomagnetic variations
JF  - Exploration Geophysics
JO  - Explor. Geophys.
Y1  - 1993
VL  - 24
IS  - 2
SP  - 157
EP  - 160
KW  - 
UR  - https://doi.org/10.1071/EG993157 
N2  - Early studies of the Earth's electrical conductivity assumed, for mathematical simplicity, a spherically symmetric conductivity model. In more recent times, a number of studies have questioned this assumption. In particular, two studies of the long-period geomagnetic variation response of the Earth indicate departure from spherical symmetry. 
ER  -

