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Dynamics of North American sector ionospheric and thermospheric response during the November 2004 superstorm by P.J. Erickson; L.P. Goncharenko; M.J. Nicolls; M. Ruohoniemi; M.C. Kelley is a Physics and Astronomy article available to read on EtoBox.

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We present a study of ionospheric and thermospheric response during a November 9-10, 2004 major geomagnetic storm event (DsT $À300 nT). We utilize the North American sector longitude chain of incoherent scatter radars at Arecibo, Millstone Hill, and Sondrestrom, operating as part of a coordinated international mesosphere/lower thermosphere coupling study experiment. Total electron content (TEC) determinations from global positioning system (GPS) ground receivers, ground magnetometer traces from the Canadian CANOPUS array, Defense Meteorological Satellite Platform (DMSP) topside data, and global convection patterns from the SuperDARN radar network are analyzed to place the detailed radar data in proper mesoscale context. The plasmaspheric boundary layer (PBL) expanded greatly in the dusk sector during ring current intensification to span more than 251 of magnetic latitude, reaching as far south as 301 invariant latitude. Strong sub-auroral polarization stream velocities of more than 1 km/s were accompanied by large upwards thermal O+ fluxes to the overlying magnetosphere. The large PBL expansion subsequently exposed both Millstone Hill and Sondrestrom to the auroral convection patte

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Author

P.J. Erickson; L.P. Goncharenko; M.J. Nicolls; M. Ruohoniemi; M.C. Kelley

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 1364-6826)

Published

2010

Language

EN

Field

Physics and Astronomy (Physical Sciences)