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Transient electromagnetic field generated by a vertical electric dipole on the surface of a dissipative earth
Author(s) -
Haddad Hussain,
Chang David C.
Publication year - 1981
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs016i002p00169
Subject(s) - dissipative system , physics , electromagnetic pulse , electromagnetic field , schumann resonances , impulse (physics) , dipole , electromagnetic radiation , electric field , computational physics , surface wave , earth (classical element) , scattering , classical mechanics , geophysics , optics , quantum mechanics , ionosphere , mathematical physics
The problem of electromagnetic pulse propagation over a dissipative earth surface, excited by a vertical electric dipole located on the earth surface, is investigated. By deforming related integrals in the complex frequency domain it is shown that the scattering contribution of the earth, which is formally expressed in terms of several double infinite integrals, can be efficiently computed from some single finite integrals and is amenable to physical interpretation. Dispersion of electromagnetic waves eminating from an impulse current is presented as a function of both the observation distance and the earth conductivity.