Physics
Scientific paper
Nov 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979georl...6..889s&link_type=abstract
Geophysical Research Letters, vol. 6, Nov. 1979, p. 889-892.
Physics
9
Geomagnetic Pulsations, Magnetospheric Instability, Plasma Resonance, Satellite Observation, International Sun Earth Explorers, Magnetohydrodynamic Waves, Oxygen Ions, Spatial Distribution, Standing Waves
Scientific paper
Simultaneous observations of Pc 3, 4, 5 pulsations by five satellites in the pre-noon local time sector at and near synchronous orbit are examined. The periods of these simultaneous pulsations are not the same at the different observation points. This difference is attributed to site dependent resonant conditions. The spatial properties of the temporal phenomenon are demonstrated with observations by ISEE-1 and -2 as they pass through oscillations in a spatially limited region. Fundamental and second harmonic standing Alfven waves are observed simultaneously on the same field line. The periods are consistent with model predictions when the measured plasma composition, which by mass consists mainly of singly ionized oxygen, is taken into account.
Fritz Teresa A.
Galland Kivelson Margaret
Lennartsson W.
Russell Christopher T.
Singer Howard J.
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