Cluster Observations During a Slow Crossing of the Duskside LLBL and Conjugate Observations in the Topside Ionosphere with FAST

Details Cluster Observations During a Slow Crossing of the Duskside LLBL and Conjugate Observations in the Topside Ionosphere with FAST Cluster Observations During a Slow Crossing of the Duskside LLBL and Conjugate Observations in the Topside Ionosphere with FAST

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsm12a1196l&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #SM12A-1196

Physics

2409 Current Systems (2708), 2431 Ionosphere/Magnetosphere Interactions (2736), 2708 Current Systems (2409), 2724 Magnetopause, Cusp, And Boundary Layers, 2736 Magnetosphere/Ionosphere Interactions

Scientific paper

On 7 December 2000, the Cluster spacecraft were trailing a slowly expanding moagnetopause near dusk, remaining within 1 RE 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.~Ö., and K.~D. Siebert, Theory of the low latitude boundary layer and its coupling to the ionosphere: A tutorial review, in Earth's Low-Latitude Boundary Layer, Geophys. Monogr. Ser., vol.~133, edited by P.~T. Newell and T.~Onsager, p.~13, American Geophysical Union, Washington, DC, 2003.

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