منابع مشابه
Plasmapause Morphology Determined from an Empirical Ionospheric Convection Model
The steady state electric potentials derived from empirical ionospheric onvection models were mapped to the magnetospheric equatorial plane and added to the Earth's rotational field to examine the local time dependence of the plasmapause radius. The last closed equipotential line was assumed to be the plasmapause. The sensitivity of plasmapause shape and size derived in this way was studied by ...
متن کاملThe ionospheric signature of transient dayside reconnection and the associated pulsed convection return ̄ow
Three SuperDARN coherent HF radars are employed to investigate the excitation of convection in the dayside high-latitude ionosphere in response to transient reconnection occurring in the cusp region. This study demonstrates the existence of transient antisunward-propagating backscatter features at the expected location of the ionospheric footprint of the cusp region, which have a repetition rat...
متن کاملPlasmoid-Induced-Reconnection and Fractal Reconnection
As a key to undertanding the basic mechanism for fast reconnection in solar flares, plasmoid-inducedreconnection and fractal reconnection are proposed and examined. We first briefly summarize recent solar observations that give us hints on the role of plasmoid (flux rope) ejections in flare energy release. We then discuss the plasmoid-induced-reconnection model, which is an extention of the cla...
متن کاملA numerical model of the ionospheric signatures of time-varying magnetic reconnection: I. ionospheric convection
This paper presents a numerical model for predicting the evolution of the pattern of ionospheric convection in response to general time-dependent magnetic reconnection at the dayside magnetopause and in the cross-tail current sheet of the geomagnetic tail. The model quantifies the concepts of ionospheric flow excitation by Cowley and Lockwood (1992), assuming a uniform spatial distribution of i...
متن کاملThe correlation between mid-latitude trough and the plasmapause
[1] We use simultaneous global observations of the mid-latitude trough and the plasmapause to experimentally prove a long-standing conjecture of magnetosphereionosphere couplingnamely the mid-latitude trough and plasmapause are on the same field line. Global Ionospheric Maps (GIM), generated using ground based GPS receivers, are used to detect the globally extended mid-latitude trough; while gl...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Space Physics
سال: 2019
ISSN: 2169-9380,2169-9402
DOI: 10.1029/2019ja026898