outer ionosphere
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2022 ◽  
Vol 24 (4) ◽  
pp. 53-62
Author(s):  
Alexey S. Belov

The experimental results of the extremely low frequency emission characteristics excited in the outer ionosphere under the ionospheric plasma heating by high-latitude EISCAT facility are presented. The experiments have been conducted in the period of 20062010 yr. using two main schemes of extremely low frequency generation including the impact of the heating facility amplitude modulated emission and two unmodulated pump waves with the frequency detuning. In-situ measurements of the plasma wave disturbances were performed at the outer ionosphere heights using on-board equipment of DEMETER microsatellite. In work the spatial, amplitude and spectral characteristics of the generated extremely low frequency emissions are determined. It is shown that the characteristic size of the extremely low frequency emission is about 400600 km along the trajectory of the DEMETER microsatellite. The registration area spatial position is determined by both the applied generation scheme and the background plasma density distribution. The extremely low frequency emission electric field strength at the Earths outer ionosphere heights is 50330 V/m.





2018 ◽  
Vol 61 (6) ◽  
pp. 402-406
Author(s):  
D. S. Kotik ◽  
F. I. Vybornov ◽  
A. V. Ryabov ◽  
A. V. Pershin ◽  
V. A. Yashnov
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2018 ◽  
Vol 73 (1) ◽  
pp. 17-40
Author(s):  
V. L. Frolov ◽  
V. O. Rapoport ◽  
E. A. Shorokhova ◽  
M. Parrot ◽  
J.-L. Rauch




2013 ◽  
Vol 56 (6) ◽  
pp. 325-343 ◽  
Author(s):  
V. L. Frolov ◽  
N. A. Mityakov ◽  
E. A. Shorokhova ◽  
M. Parrot


2011 ◽  
Vol 29 (7) ◽  
pp. 1253-1258 ◽  
Author(s):  
C. S. Arridge ◽  
N. Achilleos ◽  
P. Guio

Abstract. The atmosphere of Saturn's largest moon Titan is driven by photochemistry, charged particle precipitation from Saturn's upstream magnetosphere, and presumably by the diffusion of the magnetospheric field into the outer ionosphere, amongst other processes. Ion pickup, controlled by the upstream convection electric field, plays a role in the loss of this atmosphere. The interaction of Titan with Saturn's magnetosphere results in the formation of a flow-induced magnetosphere. The upstream magnetoplasma environment of Titan is a complex and highly variable system and significant quasi-periodic modulations of the plasma in this region of Saturn's magnetosphere have been reported. In this paper we quantitatively investigate the effect of these quasi-periodic modulations on the convection electric field at Titan. We show that the electric field can be significantly perturbed away from the nominal radial orientation inferred from Voyager 1 observations, and demonstrate that upstream categorisation schemes must be used with care when undertaking quantitative studies of Titan's magnetospheric interaction, particularly where assumptions regarding the orientation of the convection electric field are made.



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