Further investigation of the CDAW 7 substorm using geosynchronous particle data - Multiple injections and their implications

Details Further investigation of the CDAW 7 substorm using geosynchronous particle data - Multiple injections and their implications Further investigation of the CDAW 7 substorm using geosynchronous particle data - Multiple injections and their implications

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....97.6417r&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. A5, May 1, 1992, p. 6417-6428. Research supported by DOE.

Physics

29

Earth Orbital Environments, Energetic Particles, Injection, Magnetic Storms, Current Sheets, Geomagnetic Tail, Magnetic Field Reconnection

Scientific paper

Geosynchronous energetic particle data from the Los Alamos charged particle analyzer instruments are examined as part of an investigation of a substorm which occurred on April 24, 1979. Observations show three distinct injection events during this substorm. A drift shell tracing technique is used to determine the time and location on the geosynchronous drift shell of each injection region. The timing of events on the ground, in the tail, and at geosynchronous orbit are compared. Possible interpretations of the more complete set of observations are considered in the context of both the traditional near-earth neutral line model and the inner magnetospheric current disruption model. A new synthesis of these two models which provides a simple interpretation for all the observations is suggested. It is proposed that reconnection in the tail initiates the substorm but diverts much of the cross-tail current around the reconnection region enhancing the near-earth cross-tail current.

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