Explorer 34 magnetic field measurements near the tail current sheet and auroral activity

1981 ◽  
Vol 77 (2) ◽  
pp. 409-442 ◽  
Author(s):  
T. W. Speiser ◽  
T. G. Forbes
Keyword(s):  
Magnetic Field ◽  
Current Sheet ◽  
Field Measurements ◽  
Tail Current ◽  
Auroral Activity ◽  
Magnetic Field Measurements

scholarly journals Multi-scale analysis of turbulence in the Earth's current sheet

2004 ◽  
Vol 22 (7) ◽  
pp. 2525-2533 ◽  
Author(s):  
M. Volwerk ◽  
Z. Vörös ◽  
W. Baumjohann ◽  
R. Nakamura ◽  
A. Runov ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Current Sheet ◽  
Spectral Index ◽  
Maximum Flow ◽  
Field Measurements ◽  
Scale Analysis ◽  
Multi Scale ◽  
Magnetic Field Measurements ◽  
Scaling Index ◽  
Multi Scale Analysis

Abstract. A multi-scale analysis of magnetotail turbulence in the Earth's tail current sheet is presented based on Cluster magnetometer observations. Both Fourier and wavelet analysis is used to describe the spectral index and scaling indices of the turbulence for different frequency regions. Flows in the tail are very important for driving the observed turbulence. There is a strong correlation between the maximum perpendicular flow velocity and the turbulence power for maximum velocities km/s. At higher maximum flow velocities the turbulence power levels out, showing a saturation of the generation mechanism. The suspected presence of breaks in the slope of the spectrum at two frequencies (f1 and f2) can be confirmed for f1≈0.08Hz, but based on the data analysis the second break at f2 is expected at a frequency higher than 12.5Hz, where the data cannot significantly be evaluated. A schematic turbulence power spectrum is presented based on the Cluster magnetic field measurements. Dependent on the presence of BBFs the spectral index or scaling index varies significantly.

Hydrodynamische Stoßwellen am linearen Pinch

1961 ◽  
Vol 16 (5) ◽  
pp. 484-491 ◽  
Author(s):  
W. Köppendörfer
Keyword(s):  
Magnetic Field ◽  
Current Sheet ◽  
Fluid Model ◽  
Mass Density ◽  
Field Measurements ◽  
Magnetic Field Measurements ◽  
Two Fluid Model ◽  
Two Fluid

The purpose of the experiments was to achieve hydromagnetic shockwaves on a linear pinch collapse. To approach the hydromagnetic two-fluid model a strong pre-ionization was used. If the conductivity of the plasma is high and the gas fully ionized, the mass density must be proportional to the stabilizing field within the current sheet. By this way the structure of shockwaves could be obtained from magnetic field measurements.

Magnetic field measurements in space

1963 ◽  
Vol 1 (3) ◽  
pp. 399-414 ◽  
Author(s):  
Laurence J. Cahill
Keyword(s):  
Magnetic Field ◽  
Field Measurements ◽  
Magnetic Field Measurements

High magnetic field measurements in high structural quality AlCuFe quasicrystals

1992 ◽  
Vol 177 (1-4) ◽  
pp. 516-518 ◽  
Author(s):  
H. Rakoto ◽  
T. Klein ◽  
C. Berger ◽  
G. Fourcaudot ◽  
J.C. Grieco ◽  
...  
Keyword(s):  
Magnetic Field ◽  
High Magnetic Field ◽  
Field Measurements ◽  
Structural Quality ◽  
Magnetic Field Measurements
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