Journal of Geophysical Research, vol. 79, Dec. 1, 1974, p. 5187-5195.
The effects of hydromagnetic perturbations that were excited by an SSC were seen at L = 8.2, -12 deg geomagnetic latitude, 0610 geomagnetic local time in Explorer 12 energetic particle and magnetic field data, and on ground magnetograms. The entire day side magnetosphere was compressed by 2-3 earth radii in 2-3 min. This compression and the accompanying increase in magnetopause currents produced a 25 gamma enhancement of the magnetic field at the satellite and a worldwide 45 gamma enhancement at the ground. Energetic electron fluxes rose sharply at the satellite, indicating that particles moved earthward and were accelerated as the magnetic field was compressed. An additional 15 gamma 2-min enhancement of the magnetic field was seen at the satellite. This pulse did not significantly enhance energetic electron fluxes and did not produce worldwide ground effects, though associated perturbations are present in some ground records.
Major Subject Terms: MAGNETIC STORMS, MAGNETOHYDRODYNAMIC WAVES, MAGNETOSPHERIC INSTABILITY, SUDDEN STORM COMMENCEMENTS, WAVE EXCITATION
Minor Subject Terms: ELECTRON FLUX DENSITY, EXPLORER 12 SATELLITE, MAGNETIC FIELD CONFIGURATIONS, MAGNETIC SIGNATURES, MAGNETOACOUSTIC WAVES, MAGNETOPAUSE, PARTICLE ACCELERATION, TIME RESPONSE
CASI Accession Number: A7516439 ISSN