Physics
Scientific paper
Aug 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3515110a&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 15, CiteID L15110
Physics
6
Magnetospheric Physics: Plasmasphere, Magnetospheric Physics: Magnetosphere: Inner, Magnetospheric Physics: Magnetosphere Interactions With Satellites And Rings, Ionosphere: Plasma Temperature And Density, Ionosphere: Topside Ionosphere
Scientific paper
We demonstrate a method for extracting the ionospheric projection of the plasmapause (PP) from DMSP measurements of the H+ density in the topside ionosphere. The results agree well with PP locations derived from images of the plasmasphere acquired by the IMAGE spacecraft during a 72-day period in 2001. The DMSP-derived PP locations are usually earthward of the IMAGE EUV PP locations, on average about 0.5 L. The locations are also usually earthward of PP locations derived from the O'Brien and Moldwin [2003] empirical PP model, on average about 1 L. Nearly all of the cases when the DMSP-derived PP location is more that about 0.5 L different than the IMAGE-derived PP location occur during periods when the plasmasphere and PP are showing significant structure. Examination of these periods suggests that the DMSP measurements are often identifying physical structures in the plasmasphere.
Anderson Philip C.
Goldstein Jeffrey Jay
Johnston Robert W.
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