Damping of natural oscillations of geomagnetic field lines

Details Damping of natural oscillations of geomagnetic field lines Damping of natural oscillations of geomagnetic field lines

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980ge%26ae..20.1053k&link_type=abstract

Geomagnetizm i Aeronomiia, vol. 20, Nov.-Dec. 1980, p. 1053-1057. In Russian.

Physics

Geomagnetic Micropulsations, Geomagnetism, Lines Of Force, Self Oscillation, Vibration Damping, Earth Magnetosphere, Harmonic Oscillation, Ionospheric Conductivity, Space Plasmas

Scientific paper

Simple expressions are obtained for damping decrements of natural oscillations of geomagnetic field lines in relation to ionospheric conductivity and the degree of inhomogeneity of the magnetospheric plasma. It is shown that oscillations at the first harmonic are excited only if the ionospheric conductivity exceeds a threshold value; the damping of high-frequency harmonics is significantly less intense than that of the first harmonic.

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