HR: 1330h
AN: SM12A-1196    [PDF]
TI: Cluster Observations During a Slow Crossing of the Duskside LLBL and Conjugate Observations in the Topside Ionosphere with FAST
AU: * Lund, E J
EM: Eric.Lund@unh.edu
AF: Space Science Center, University of New Hampshire, 39 College Rd., Durham, NH 03824 United States
AU: Farrugia, C J
EM: charlie.farrugia@unh.edu
AF: Space Science Center, University of New Hampshire, 39 College Rd., Durham, NH 03824 United States
AU: Sandholt, P
EM: p.e.sanhdolt@fys.uio.no
AF: Department of Physics, University of Oslo, Oslo, N-0316 Norway
AU: Cowley, S W
EM: swhc1@ion.le.ac.uk
AF: Department of Physics, University of Leicester, Leicester, LE1 7RH United Kingdom
AU: Mouikis, C G
EM: mouikis@atlas.sr.unh.edu
AF: Space Science Center, University of New Hampshire, 39 College Rd., Durham, NH 03824 United States
AU: Kistler, L M
EM: lynn.kistler@unh.edu
AF: Space Science Center, University of New Hampshire, 39 College Rd., Durham, NH 03824 United States
AU: Moebius, E
EM: Eberhard.Moebius@unh.edu
AF: Space Science Center, University of New Hampshire, 39 College Rd., Durham, NH 03824 United States
AU: Dunlop, M W
EM: M.W.Dunlop@rl.ac.uk
AF: Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX United Kingdom
AU: Reme, H
EM: henri.reme@cesr.fr
AF: Centre d'Etude Spatiale des Rayonnements, 9, avenue du Colonel Roche, Toulouse, F-31029 France
AU: Carlson, C W
EM: cwc@ssl.berkeley.edu
AF: Space Sciences Laboratory, University of California, Berkeley, CA 94720 United States
AB: On 7 December 2000, the Cluster spacecraft were trailing a slowly expanding moagnetopause near dusk, remaining within $1 R_E$ of a model boundary for more than three hours. This orbit allows a detailed probing of the structure of the low latitude boundary layer (LLBL). During this time the IMF trended from south to north, a rotation punctuated by several sharp southward excursions. The aim of the paper is threefold: (1) using twin-satellite observations to find the effect of this IMF behavior on the LLBL; (2) to compare the observations with theoretical predictions of the layered structure of the LLBL and its field-aligned currents (Sonnerup and Siebert, 2003); and (3) to find the ionospheric imprints this boundary layer leaves at FAST altitudes. This work is supported in part by NASA's Living with a Star program. Sonnerup, B.~U.~\"O., and K.~D. Siebert, Theory of the low latitude boundary layer and its coupling to the ionosphere: A tutorial review, in {\it Earth's Low-Latitude Boundary Layer}, {\it Geophys.\ Monogr.\ Ser.}, vol.~133, edited by P.~T. Newell and T.~Onsager, p.~13, American Geophysical Union, Washington, DC, 2003.
DE: 2409 Current systems (2708)
DE: 2431 Ionosphere/magnetosphere interactions (2736)
DE: 2708 Current systems (2409)
DE: 2724 Magnetopause, cusp, and boundary layers
DE: 2736 Magnetosphere/ionosphere interactions
SC: SPA - Magnetospheric Physics [SM]
MN: 2003 Fall Meeting