Effect of a huge crustal conductivity anomaly on the H-component of geomagnetic variations recorded in central South America

Earth, Planets and Space

Table 1 Amplitudes and amplification factors at CB for the Pc3 and Pc5 pulsations

Station	Pc3 amplitude (nT)	Amplification at CB	Pc5 amplitude (nT)	Amplification at CB
POV	0.54	1.35	0.80	1.63
ARI	0.59	1.24	0.93	1.40
PRM	0.53	1.38	0.82	1.59
VIL	0.60	1.22	0.94	1.38
COL	0.53	1.38	0.95	1.37
CB	0.73	–	1.30	–

Amplification at CB is the ratio of the amplitude at the CB station to that at the other stations