Physics
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsm11a1597y&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #SM11A-1597
Physics
2768 Plasmasphere, 2794 Instruments And Techniques
Scientific paper
We have succeeded in observations by the Telescope of Extreme Ultraviolet (TEX) aboard Japan"fs lunar orbiter KAGUYA to characterize the evolution of the near-Earth plasma torus. The view afforded by the KAGUYA orbit encompasses the plasma torus in a single exposure, enabling us to examine for the first time the globally-averaged properties of the torus. We focus on a study period that began with a moderate erosion event, and follow the plasma refilling from the upper atmosphere for a period of 3 days. The refilling rate (the expansion rate of the cold dense plasma onto the equatorial plane) ranges from approximately 1600 km per day to 4800 km per day. A flux transfer event was identified from the "gside view"h of the Earth, in which cold dense plasmas (90 cm-3) on geomagnetic flux tube was transferred to the outer magnetosphere of the Earth. This is called "gGeoscience from the Moon"h.
Ezawa Fukuhiro
Kagitani Masato
Kameda Shingo
Kikuchi Macoto
Miyake Wataru
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