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The VLF a nd ELF modes excited by a hori zon tal magnetic dipole (ve r tical loop) i ll the spherical s hell betwee n a finitely co nducting eart h and a n isotropic sharply bounded ionosph ere ar e shown t o h a ve a nearly transverse magnetic character. Th e modes are simila r to t hose of a vertical electric dipole. Wi t h t he exception of t he zero order mode, t he propagating modes excited by t he m agnetic dipole a re of slightly hig her a mpli t ud es, provid ed t hat t he fa r fieldsdoi:10.6028/jres.065d.039 fatcat:mqhy6777lnbojlh3bosoqtcv5a