Field-aligned currents and erosion of the dayside magnetosphere

Details Field-aligned currents and erosion of the dayside magnetosphere Field-aligned currents and erosion of the dayside magnetosphere

Sep 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975p%26ss...23.1257m&link_type=abstract

Planetary and Space Science, vol. 23, Sept. 1975, p. 1257-1260.

Physics

6

Earth Magnetosphere, Field Aligned Currents, Ionospheric Currents, Lines Of Force, Magnetic Storms, Geomagnetic Tail, Interplanetary Magnetic Fields, Magnetic Field Configurations, Magnetopause, Magnetospheric Instability

Scientific paper

The influence of the three-dimensional current system of the precursory phase of a substorm on the magnetic field in the dayside magnetosphere is considered. The current system includes the field-aligned currents flowing into the high-latitude ionosphere at dawn and flowing out at dusk. These currents decrease the magnetic field in the dayside magnetosphere and cause the transference of part of the dayside magnetic field lines into the magnetotail. As a result two kinds of deformation arise: the shrinkage of the dayside magnetopause and the equatorward displacement of the dayside polar cusps.

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