Summary of Connecticut 76-Hz vertical electric, transverse magnetic, and radial magnetic field-strength comparisons


  • Peter R. Bannister


The results of 60 days of vertical electric-field and 136 days of radial horizontal magnetic-field measurements taken in Connecticut are summarized in this article. The main results are (1) the vertical electric field-strength behavior usually is very similar to the transverse horizontal magnetic field-strength behavior (in both amplitude and relative phase) during both normal and disturbed-propagation conditions, (2) during normal-propagation conditions, the radial magnetic field-strength amplitude behavior usually is similar to the transverse magnetic field-strength amplitude behavior, while the radial magnetic field-strength relative-phase variation usually is somewhat greater than that for the transverse magnetic field strength, and (3) during disturbed-propagation conditions, the daily radial and transverse magnetic field-strength plots, versus GMT, usually are dissimilar (in both amplitude and relative phase). In particular, the radial magnetic field-strength variations usually are greater than the transverse magnetic field-strength variations.