Grating formation by a high power radio wave in near-equator ionosphere

2011 ◽  
Vol 18 (11) ◽  
pp. 112101 ◽  
Author(s):  
Rohtash Singh ◽  
A. K. Sharma ◽  
V. K. Tripathi
Keyword(s):  
Radio Wave ◽  
High Power ◽  
Grating Formation

Calculation of the electron density of the F region heated by a high-power radio-wave field

1977 ◽  
Vol 20 (12) ◽  
pp. 1267-1270 ◽  
Author(s):  
Yu. A. Ignat'ev ◽  
Z. N. Krotova ◽  
�. E. Mityakova
Keyword(s):  
Radio Wave ◽  
Wave Field ◽  
Electron Density ◽  
High Power ◽  
F Region

scholarly journals Perspective Ground-based Method for Diagnostics of the Lower Ionosphere and the Neutral Atmosphere

2013 ◽  
Vol 22 (1) ◽  
Author(s):  
N. V. Bakhmetieva ◽  
G. I. Grigoriev ◽  
A. V. Tolmacheva
Keyword(s):  
Radio Wave ◽  
High Power ◽  
Relative Concentration ◽  
Spectral Characteristics ◽  
Lower Ionosphere ◽  
Internal Gravity Waves ◽  
Spatial Period ◽  
Neutral Atmosphere ◽  
Radio Waves ◽  
D Region

AbstractWe present a new perspective ground-based method for diagnostics of the ionosphere and atmosphere parameters. The method uses one of the numerous physical phenomena observed in the ionosphere illuminated by high-power radio waves. It is a generation of the artificial periodic irregularities (APIs) in the ionospheric plasma. The APIs were found while studying the effects of ionospheric high-power HF modification. It was established that the APIs are formed by a standing wave that occurs due to interference between the upwardly radiated radio wave and its reflection off the ionosphere. The API studies are based upon observation of the Bragg backscatter of the pulsed probe radio wave from the artificial periodic structure. Bragg backscatter occurs if the spatial period of the irregularities is equal to half a wavelength of the probe signal. The API techniques makes it possible to obtain the following information: the profiles of electron density from the lower D-region up to the maximum of the F-layer; the irregular structure of the ionosphere including split of the regular E-layer, the sporadic layers; the vertical velocities in the D- and E-regions of the ionosphere; the turbulent velocities, turbulent diffusion coefficients and the turbopause altitude; the neutral temperatures and densities at the E-region altitudes; the parameters of the internal gravity waves and their spectral characteristics; the relative concentration of negative oxygen ions in the D-region. Some new results obtained by the API technique are discussed.

Long time scale evolution of high-power radio wave ionospheric heating: 1. Beam propagation

Radio Science ◽  
1993 ◽  
Vol 28 (5) ◽  
pp. 775-784 ◽  
Author(s):  
M. J. Keskinen ◽  
P. K. Chaturvedi ◽  
S. L. Ossakow
Keyword(s):  
Radio Wave ◽  
High Power ◽  
Time Scale ◽  
Beam Propagation ◽  
Ionospheric Heating ◽  
Long Time ◽  
Scale Evolution

Multiple acceleration of electrons in the regions of high-power radio-wave reflection in the ionosphere

1985 ◽  
Vol 47 (11) ◽  
pp. 1057-1070 ◽  
Author(s):  
A.V Gurevich ◽  
Ya.S Dimant ◽  
G.M Milikh ◽  
V.V Vas'kov
Keyword(s):  
Radio Wave ◽  
High Power ◽  
Wave Reflection

Observations ofEregion irregularities generated at auroral latitudes by a high-power radio wave

1985 ◽  
Vol 90 (A12) ◽  
pp. 12293 ◽  
Author(s):  
F. T. Djuth ◽  
R. J. Jost ◽  
S. T. Noble ◽  
W. E. Gordon ◽  
P. Stubbe ◽  
...  
Keyword(s):  
Radio Wave ◽  
High Power

Appearance of VLF and ELF-noises in topside ionosphere under the action of high power radio wave from data of satellite intercosmos-24

1995 ◽  
Vol 15 (12) ◽  
pp. 49-56 ◽  
Author(s):  
V.V. Vas'kov ◽  
N.I. Bud'ko ◽  
O.V. Kapustina ◽  
Yu.M. Mikhailov ◽  
N.A. Ryabova ◽  
...  
Keyword(s):  
Radio Wave ◽  
High Power ◽  
Topside Ionosphere

SWARM observations of the artificial ionospheric plasma disturbances and field‐aligned currents induced by the SURA power HF heating

2020 ◽  
Author(s):  
Renata Lukianova ◽  
Vladimir Frolov ◽  
Alexander Ryabov
Keyword(s):  
Radio Wave ◽  
High Power ◽  
Current System ◽  
Plasma Heating ◽  
Basic Research ◽  
Magnetic Flux Tube ◽  
Topside Ionosphere ◽  
Electric Currents ◽  
Ionospheric Heating ◽  
Swarm Satellites

<p>It has long been a goal of active experiments to understand the response of the ionosphere to the high-power high-frequency (HF) radio wave pumping. The altitudes of 400-500 km are of particular interest since they correspond to the transition from the region, in which the most intense plasma heating and artificial ionospheric turbulence are observed, to the region where the disturbed plasma escapes to the magnetosphere. No observational data on the properties of plasma turbulence induced by the high-power HF pumping at this altitudinal range existed, until the emergence of a multi-satellite low-orbiting SWARM mission.</p><p>A series of experiments were conducted with a conjunction between the midlatitude SURA ionospheric heating facility and the SWARM satellites. We present the first observations made by SWARM on the plasma perturbations and electric currents induced in the F<sub>2</sub> region ionosphere by the O‐mode radio wave pumping. In the heated region, significant effects include a localized increase of the electron temperature accompanied by stratification of the electron density and the magnetic signatures of field‐aligned currents (FAC) of 0.01-0.02 μA/m<sup>2</sup> densities. The upward FAC is confined within the central part of the artificially perturbed magnetic flux tube, while the return downward current flows through the ambient plasma adjoining to the boundary of the HF-disturbed region. The spatial structure and amplitude of FACs indicate the current system is likely associated with the unipolar diffusion and excitation of eddy electric currents in the topside ionosphere. Similar effects are revealed in the laboratory experiment but not previously observed in space. The spaceborne experimental information is being accumulated and further analysis is underway.</p><p>This study was supported by the Russian Foundation for Basic Research, grant 20-05-00166. </p>

scholarly journals A hysteresis effect in the generation of field-aligned irregularities by a high-power radio wave

Radio Science ◽  
1983 ◽  
Vol 18 (6) ◽  
pp. 835-839 ◽  
Author(s):  
T. B. Jones ◽  
T. Robinson ◽  
P. Stubbe ◽  
H. Kopka
Keyword(s):  
Radio Wave ◽  
High Power ◽  
Hysteresis Effect ◽  
Field Aligned Irregularities
Sign in / Sign up

Export Citation Format

Share Document