scholarly journals Upper cutoff energy of the electron plasma sheet as a measure of magnetospheric convection strength

2002 ◽  
Vol 107 (A10) ◽  
Author(s):  
M. F. Thomsen
Keyword(s):  
Plasma Sheet ◽  
Electron Plasma ◽  
Magnetospheric Convection ◽  
Cutoff Energy

scholarly journals IMF B y Influence on Magnetospheric Convection in Earth's Magnetotail Plasma Sheet

2019 ◽  
Vol 46 (21) ◽  
pp. 11698-11708 ◽  
Author(s):  
T. Pitkänen ◽  
A. Kullen ◽  
K. M. Laundal ◽  
P. Tenfjord ◽  
Q. Q. Shi ◽  
...  
Keyword(s):  
Plasma Sheet ◽  
Magnetospheric Convection

Effects of spatial diffusion in the inner plasma sheet and the structure of the diffusion tensor

1995 ◽  
Vol 13 (2) ◽  
pp. 111-117 ◽  
Author(s):  
V. E. Zakharov ◽  
M. I. Pudovkin
Keyword(s):  
Flux Tube ◽  
Plasma Sheet ◽  
Diffusion Tensor ◽  
Plasma Pressure ◽  
Spatial Diffusion ◽  
Angle Distribution ◽  
Inner Magnetosphere ◽  
Electron Population ◽  
Magnetospheric Convection ◽  
Isotropic Pitch

Abstract. A standard pair of equations is used to describe the behaviour of a single monoenergetic particle (proton or electron) population on a geomagnetic flux tube drifting in the magnetosphere. When particle losses from the drifting flux tube into the ionosphere are neglected, this behaviour is adiabatic in a thermodynamic sense. For a population of particles with an isotropic pitch-angle distribution, the generalization of that system of equations is obtained by adding radial and azimuthal spatial diffusion terms. The magnetic field is taken to be dipolar in the inner magnetosphere. The potential electric field is assumed to consist of magnetospheric convection and corotation components. Experimental data are used to estimate the radial equatorial profiles of the plasma sheet pressure. Assuming that the local time and L-shell variations are separable and supposing steady-state conditions, the expressions for the diffusion tensor components are evaluated. The influence of spatial diffusion on the radial and azimuthal profiles of the plasma pressure in the inner plasma sheet is also discussed.

scholarly journals A statistical study of the inner edge of the electron plasma sheet and the net convection potential as a function of geomagnetic activity

2011 ◽  
Vol 116 (A6) ◽  
pp. n/a-n/a ◽  
Author(s):  
F. Jiang ◽  
M. G. Kivelson ◽  
R. J. Walker ◽  
K. K. Khurana ◽  
V. Angelopoulos ◽  
...  
Keyword(s):  
Geomagnetic Activity ◽  
Plasma Sheet ◽  
Statistical Study ◽  
Electron Plasma

scholarly journals Average characteristics of the midtail plasma sheet in different dynamic regimes of the magnetosphere

2004 ◽  
Vol 22 (6) ◽  
pp. 2107-2113 ◽  
Author(s):  
N. P. Dmitrieva ◽  
V. A. Sergeev ◽  
M. A. Shukhtina
Keyword(s):  
Magnetic Field ◽  
Magnetic Flux ◽  
Growth Phase ◽  
Plasma Sheet ◽  
Transfer Rate ◽  
Flux Transport ◽  
Data Set ◽  
Magnetospheric Convection ◽  
Flux Transfer ◽  
Night Flux

Abstract. We study average characteristics of plasma sheet convection in the middle tail during different magnetospheric states (Steady Magnetospheric Convection, SMC, and substorms) using simultaneous magnetotail (Geotail, 15-35 RE downtail) and solar wind (Wind spacecraft) observations during 3.5 years. (1) A large data set allowed us to obtain the average values of the plasma sheet magnetic flux transfer rate (Ey and directly compare it with the dayside transfer rate (Emod for different magnetospheric states. The results confirm the magnetic flux imbalance model suggested by Russell and McPherron (1973), namely: during SMC periods the day-to-night flux transport rate equals the global Earthward plasma sheet convection; during the substorm growth phase the plasma sheet convection is suppressed on the average by 40%, whereas during the substorm expansion phase it twice exceeds the day-to-night global flux transfer rate. (2) Different types of substorms were revealed. About 1/3 of all substorms considered displayed very weak growth in the tail lobe magnetic field before the onset. For these events the plasma sheet transport was found to be in a balance with the day-to-night flux transfer, as in the SMC events. However, the lobe magnetic field value in these cases was as large as that in the substorms with a classic growth phase just before the onset (both values exceed the average level of the lobe field during the SMC). Also, in both groups similar configurational changes (magnetic field stretching and plasma sheet thinning) were observed before the substorm onset. (3) Superimposed epoch analysis showed that the plasma sheet during the late substorm recovery phase has the characteristics similar to those found during SMC events, the SMC could be a natural magnetospheric state following the substorm.

scholarly journals Plasma sheet magnetic fields and flows during steady magnetospheric convection events

2013 ◽  
Vol 118 (10) ◽  
pp. 6136-6144 ◽  
Author(s):  
T. I. Pulkkinen ◽  
N. Partamies ◽  
J. Kissinger ◽  
R. L. McPherron ◽  
K.-H. Glassmeier ◽  
...  
Keyword(s):  
Magnetic Fields ◽  
Plasma Sheet ◽  
Magnetospheric Convection
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