Dayside aurora and substorm current systems

Details Dayside aurora and substorm current systems Dayside aurora and substorm current systems

Aug 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979esasp.148..199e&link_type=abstract

In ESA Magnetospheric Boundary Layers p 199-206 (SEE N80-13529 04-42)

Physics

Antarctic Regions, Auroral Electrojets, Daytime, Magnetic Storms, Precipitation Particle Measurement, Telluric Currents, Energy Transfer, Geomagnetic Tail, Interplanetary Magnetic Fields, Magnetic Field Configurations, Magnetic Signatures, Solar Wind

Scientific paper

Dayside cusp auroral signatures from South Pole keograms allow an investigation of the dependence of cusp movements on substorm activity and interplanetary magnetic field direction. Erosion of dayside field is not a direct result of southward turning, but is closely related to substorm timing and intensity. The dayside field reconfigurations result from increases in near-tail magnetopause currents, which connect through the nightside electrojet. This implies a substorm mechanism involving increased energy extraction from the solar wind, rather than a relaxation process of release of internally stored energy.

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