Physics
Scientific paper
Feb 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990p%26ss...38..231s&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 38, Feb. 1990, p. 231-239.
Physics
39
Earth Ionosphere, Earth Magnetosphere, Ionospheric Disturbances, Magnetic Storms, Plasmas (Physics), Electron Energy, Electron Precipitation, Geomagnetic Tail, International Sun Earth Explorers, Magnetic Fields
Scientific paper
High-resolution ground-based observations in combination with observations made in the central plasma sheet by the ISEE-1 and -2 spacecraft provided evidence for a new morphological class of transient events, plasma injections. They occurred in the nightside magnetotail during periods of prolonged steady convection without any activity of the type traditionally attributed to substorms. The main ionospheric signature of the plasma injections was an enhancement of equatorward plasma flow for a few minutes. The flow came into the STARE field of view at Lambda of 70 deg or more and then proceeded equatorwards with a speed of 800-1000 km/sec. Its leading edge was often rather sharp. In the central plasma sheet region, the main signatures were transient enhancements in the earthward convection speed and a rise of the Bz component as well as the total magnetic field.
Aulamo O. A.
Bosinger Tilmann
Pellinen Risto J.
Sergeev Aleksandre V.
Vallinkoski M. K.
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