Global view of refilling of the plasmasphere

Sandel, B. R. and Denton, M. H. (2007) Global view of refilling of the plasmasphere. Geophysical Research Letters, 34 (L17102). pp. 1-5. ISSN 0094-8276

Full text not available from this repository.

Abstract

We use observations by the IMAGE Extreme Ultraviolet Imager (EUV) to characterize the outflow of He+ from the ionosphere to the plasmasphere under quiet conditions. The view afforded by the IMAGE orbit encompasses the entire plasmasphere in a single exposure, enabling us to examine for the first time the globally-averaged properties of plasmasphere refilling. We focus on a study period that begins with a moderate erosion event, and follow refilling during multiple orbits for a period of 69 hours. The inferred volume refilling rate, averaged over azimuth and time, ranges from ∼1 He+ cm−3 h−1 at L = 3.3 to ∼7 × 10−2 He+ cm−3 h−1 at L = 6.3 and is generally consistent with earlier, more local measurements. We show that the measured radial abundance profiles match those predicted by the Sheffield University Plasmasphere Ionosphere Model (SUPIM) for 2 ≤ L ≤ 4.

Item Type:
Journal Article
Journal or Publication Title:
Geophysical Research Letters
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1900/1908
Subjects:
?? plasmasphere modelling dcs-publications-idart-864dcs-publications-creditsionodcs-publications-personnel-id123geophysicsgeneral earth and planetary sciencesearth and planetary sciences(all)t technology (general) ??
ID Code:
6717
Deposited By:
Deposited On:
21 Apr 2008 11:08
Refereed?:
Yes
Published?:
Published
Last Modified:
16 Jul 2024 08:45