Accession Number : ADA193368

Title :   On the Dynamics of the Auroral Ionosphere during the Breakup of a Substorm.

Descriptive Note : Final rept. 28 Jan 83-31 Aug 86,

Corporate Author : NORTHEASTERN UNIV BOSTON MA

Personal Author(s) : Silevitch, Michael B

PDF Url : ADA193368

Report Date : 01 Mar 1988

Pagination or Media Count : 38

Abstract : The research investigation described here concentrated on several dynamic features of substorm evolution during its breakup phase. More specifically, we focussed upon the development of a model for the propagation of the Westward Travelling Surge (WTS) as seen from the viewpoint of an active ionosphere. We also considered a mechanism for the generation of pi2 pulsations. An important feature of our approach is the natural coupling which exists between the WTS motion and the frequency spectrum of the Pi2 modes. Thus, our theory predicts the correlation of Pi2 waveforms to substorm onsets. This correlation seems to be a reasonable one in light of recent observations of substorm morphology. Keywords: Magnetic storms; Aurorae.

Descriptors :   *AURORAE, *MAGNETIC STORMS, *IONOSPHERIC DISTURBANCES, COUPLING(INTERACTION), DYNAMICS, EVOLUTION(GENERAL), IONOSPHERE, MORPHOLOGY, SURGES, TRAVELING WAVES, TIME STUDIES

Subject Categories : Atmospheric Physics
      Geomagnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE