The present understanding of the cusp

Details The present understanding of the cusp The present understanding of the cusp

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991esasp.330...83l&link_type=abstract

In ESA, Cluster Dayside Polar Cusp p 83-95 (SEE N92-26294 17-46)

Physics

1

Atmospheric Boundary Layer, Earth Magnetosphere, Magnetic Flux, Polar Cusps, Solar Terrestrial Interactions, Thematic Mapping, Flux Density, Geodynamics, Polar Caps, Satellite Observation, Solar Wind, Spectrograms, Topology

Scientific paper

Knowledge learnt on the dynamics and topology of the polar cusp from in situ plasma measurements primarily on board low and medium altitude satellite is reviewed. The polar cusp, first identified from low altitude orbiting satellites, is the only region in the topside terrestrial ionosphere that maintains continuous contact with plasma. The continuous inflow of plasma through the cusp leads to a direct transfer of solar wind energy and momentum to the ionosphere and atmosphere. Thus, the cusp represents a particular 'hot spot' in the solar terrestrial relationship. New improved magnetic field mapping models have helped elucidating the connection of the low altitude cusp to the magnetospheric boundary region.

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