Field-aligned structure of the storm time Pc 5 wave of November 14-15, 1979

Details Field-aligned structure of the storm time Pc 5 wave of November 14-15, 1979 Field-aligned structure of the storm time Pc 5 wave of November 14-15, 1979

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92.5857t&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, June 1, 1987, p. 5857-5864. DOE-sponsored research.

Computer Science

Sound

50

Geomagnetic Micropulsations, Magnetic Storms, Satellite Sounding, Geos 2 Satellite, Goes Satellites, Phase Deviation, Propagation Modes, Scatha Satellite

Scientific paper

Magnetic field data from the four satellites SCATHA (P78-2), GOES 2, GOES 3, and GOES 2 have been analyzed to examine the magnetic field-aligned structure of a storm time Pc 5 wave that occurred on November 14-15, 1979. The wave had both transverse and compressional components. At a given instance, the compressional and the radial components oscillated in phase or 180 deg out of phase, and the compressional and the azimuthal components oscillated +90 deg or -90 deg out of phase. In addition, each component changed its amplitude with magnetic latitude: the compressional component had a minimum at the magnetic equator, whereas the transverse components had a maximum at the equator and minima several degrees off the equator. A 180 deg relative phase switching among the components occurred across the latitudes of amplitude minima. From these observations, the field line displacement of the wave is confirmed to have an antisymmetric standing structure about the magnetic equator with a parallel wave length of a few earth radii.

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