Interplanetary Magnetic Field (IMF) influence on the magnetic configuration and particle fluxes at geostationary orbit and on the substorm onset

Details Interplanetary Magnetic Field (IMF) influence on the magnetic configuration and particle fluxes at geostationary orbit and on the substorm onset Interplanetary Magnetic Field (IMF) influence on the magnetic configuration and particle fluxes at geostationary orbit and on the substorm onset

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987esasp.270..289b&link_type=abstract

In ESA, Proceedings of the 8th ESA Symposium on European Rocket and Balloon Programs and Related Research p 289-291 (SEE N88-162

Computer Science

Cyclogenesis, Flux (Rate), Geos 2 Satellite, Interplanetary Magnetic Fields, Magnetic Storms, Traveling Ionospheric Disturbances, Geomagnetism, Magnetic Field Configurations, Plasma Currents

Scientific paper

Substorm onset and the westward traveling surge (WTS) were studied for March 31, 1979 near local midnight (CDAW 6 event) comparing IMP 8, GEOS 2, and ground based observations. During a period of southward IMF-Bz the geomagnetic field at GEOS 2 became tail-like and the energetic electron and ion fluxes decreased. A short northward excursion of the IMF triggered the onset. The geomagnetic field became dipole-like and the energetic electron and ion fluxes increased. At that time a WTS and a negative bay in the magnetic field were observed on the ground. This substorm onset was apparently generated near the Earth (near GEOS 2) where an unstable boundary between the two magnetic configurations with a hot particle distribution of the ring current (dipole-like configuration) and the distribution with lower energies further tailward (tail-like configuration) were observed. It is suggested that this boundary was generated by variations in the IMF.

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