Open AccessPropagation of Extra Low Frequency Waves in the Magnetosphere
Author(s) -
Sen Amiya K.
Publication year - 1971
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1971.tb01810.x
Subject(s) - magnetosphere , physics , earth's magnetic field , geophysics , computational physics , schumann resonances , ionosphere , maxima , transverse plane , quantum electrodynamics , magnetic field , quantum mechanics , art , structural engineering , performance art , engineering , art history
Summary The transmission of extra low frequency transverse waves with time periods 1 to 600 seconds propagating along the geomagnetic field from the magnetospheric boundary to the surface of the Earth is considered. A nearly exact analytical solution for the propagation through the entire highly inhomogeneous path is obtained. For typical magnetospheric conditions pronounced maxima of transmission are found at time periods in the vicinity of 30, 47, 70, 136 and 218s. More moderate resonances are seen at 37, 39, 50, 77 and 99s. Closely spaced small resonances are found between 7 and 36s and between 54 and 64s and two extremely small ones are seen at 1.5 and 4s. Giant resonances are seen at 168, 311 and 542s.