Search Publications
Modeling of the turbulent plasma sheet during quiet geomagnetic conditions
Stepanova, M.; Antonova, E. E.
Recent studies have shown the importance of turbulent processes in the Earth magnetosphere dynamics, including the plasma sheet stability. In this study, turbulent eddy-diffusion coefficients were derived using the Cluster satellite data. The corresponding values of dawn-dusk electric field potential were obtained from the SuperDarn measurements. …
Aspects of magnetopause/magnetosphere response to interplanetary discontinuities, and features of magnetopause Kelvin-Helmholtz waves
Farrugia, C. J.; Gratton, F. T.
We describe (i) perturbations of the magnetopause/magnetosphere elicited by an interplanetary discontinuity and (ii) the production of Kelvin-Helmholtz waves on the magnetopause. These are two large topics, so for reasons of space we combine both features in a single data example, supporting the observations by theory. Correspondingly, the observa…
Geoefficiency of solar wind discontinuities
Palmroth, M.; Pulkkinen, T. I.; Andreeova, K. +1 more
We have investigated the solar wind-magnetosphere coupling efficiency in response to solar wind dynamic pressure enhancements. We investigate fast forward shocks, corotating interaction regions (CIRs), and pressure pulses separately, by conducting a statistical driver-response analysis. We complement the observations by results from the GUMICS-4 g…
The response of the polar cusp to a high-speed solar wind stream studied by a multispacecraft wavelet analysis
Zong, Q. -G.; Mouikis, C. G.; Korth, A. +3 more
We investigate the coupling between the solar wind and the magnetospheric cusp during the passage of a Corotating Interaction Region (CIR) high-speed stream. A CIR event on 11 January 2002 is selected for this study. We use ACE (Advanced Composition Explorer) and Geotail plasma and magnetic field data for interplanetary solar wind observations and…
A pseudo-magnetic flux rope observed by the THEMIS satellites in the Earth's magnetotail
Sarafopoulos, D. V.
We investigate an extraordinary event showing all the typical magnetic flux rope (MFR) signatures, although it is not really a MFR structure. It occurred on 1 March 2008 in the Earth's magnetotail and was observed by a major tail conjunction of Time History of Events and Macroscale Interactions during Substorms (THEMIS) satellites. THEMIS B and C …