Transport of plasma sheet material to the inner magnetosphere

Denton, M. H. and Thomsen, M. F. and Borovsky, J. E. and Lavraud, B. and Henderson, M. G. and Skoug, R. M. and Funsten, H. O. and Jahn, J.M. and Pollock, C. J. and Weygand, J. M. (2007) Transport of plasma sheet material to the inner magnetosphere. Geophysical Research Letters, 34 (L04105). pp. 1-5. ISSN 0094-8276

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The reaction of the plasma sheet in response to an increase in magnetospheric convection is examined using a combination of energetic neutral atom (ENA) imaging and in situ observations. Data from the IMAGE/MENA instrument are examined in conjunction with observations from the magnetospheric plasma analyzer (MPA) instrument onboard the Los Alamos 1994-084 satellite located in geosynchronous orbit. Examination of the MENA data during an enhanced convection event reveal that between 12:00 and 14:30 UT on 26 June 2001, ENA emissions from the plasma sheet material are observed to strengthen and move Earthwards. A simple calculation of the motion of the peak in ENA emissions following an increase in the convection gives an averaged speed of this sunward surge of around 8 km s−1 between 12:00 and 14:30 UT.

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Journal Article
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Geophysical Research Letters
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21 Apr 2008 11:33
Last Modified:
21 Nov 2022 20:35