Model simulation of the large-scale high-latitude F-layer modification by powerful HF waves with different modulation

Mingaleva, G. I.; Mingalev, V. S.; Мингалев, И. В.

doi:10.1016/j.jastp.2008.11.007

Cited by 7 publications

(4 citation statements)

References 43 publications

(48 reference statements)

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“…Some such processes result in the formation of both large-scale electron temperature and density irregularities and small-scale, geomagnetic field-aligned irregularities in the ionosphere. Mathematical modeling of the large-scale F-layer modification by powerful high frequency waves was performed in some studies, in particular, in the papers by Meltz and LeLevier [14], Perkins and Roble [15], Mantas et al [16], Bernhardt and Duncan [17], Hansen et al [18], Vas'kov et al [19], and Mingaleva et al [20,21]. The parameters of the small-scale irregularities, formed in the F-layer ionosphere by powerful high frequency waves, were described in detail by Wong et al [22].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of the Time Evolution of Small-Scale Irregularities in the F-Layer Ionospheric Plasma

Мингалев

Mingaleva

Melnik

et al. 2011

International Journal of Geophysics

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Dynamics of magnetic field-aligned small-scale irregularities in the electron concentration, existing in the F-layer ionospheric plasma, is investigated with the help of a mathematical model. The plasma is assumed to be a rarefied compound consisting of electrons and positive ions and being in a strong, external magnetic field. In the applied model, kinetic processes in the plasma are simulated by using the Vlasov-Poisson system of equations. The system of equations is numerically solved applying a macroparticle method. The time evolution of a plasma irregularity, having initial cross-section dimension commensurable with a Debye length, is simulated during the period sufficient for the irregularity to decay completely. The results of simulation indicate that the small-scale irregularity, created initially in the F-region ionosphere, decays accomplishing periodic damped vibrations, with the process being collisionless.

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Section: Introductionmentioning

confidence: 99%

Numerical Simulation of the Time Evolution of Small-Scale Irregularities in the F-Layer Ionospheric Plasma

Мингалев

Mingaleva

Melnik

et al. 2011

International Journal of Geophysics

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“…More complete details of the utilized model may be found in the studies of Mingaleva and Mingalev (1997) and Mingaleva et al (2003Mingaleva et al ( , 2009). …”

Section: Numerical Modelmentioning

confidence: 99%

“…In particular, the mathematical model of the Flayer, which can be affected by a powerful HF wave, has been developed by Mingaleva and Mingalev (1997). This model has been used to simulate the influence of the HF wave frequency and modulation regime on the expected response of the high-latitude F-layer to HF heating (Mingaleva et al, 2003(Mingaleva et al, , 2009). The results of simulation, obtained with the help of this model for the point with geographic coordinates of the ionospheric heater near Tromso, Scandinavia, have indicated that considerable variations in the electron temperature profiles can be produced by powerful HF waves in the highlatitude F-region.…”

Section: Introductionmentioning

confidence: 99%

Simulation study of the large-scale modification of the mid-latitude F-layer by HF radio waves with different powers

2012

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Abstract.A mathematical model of the ionosphere, developed earlier, is applied to investigate the large-scale midlatitude F-layer modification by HF radio waves with different powers. Simulations are performed for the point with geographic coordinates of the "Sura" heating facility (Nizhny Novgorod, Russia) for autumn conditions. The calculations are made for distinct cases, in which the effective absorbed power has different values belonging to the 5-100 MW range, both for nocturnal and daytime conditions. The frequency of powerful HF waves is chosen to be close to the most effective frequency for the large-scale F2-layer modification. The results of modeling indicate that the effective absorbed power can influence considerably the F-layer response to high-power radio waves in the mid-latitude ionosphere.

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“…However, at high altitude at the F region, the transportation process and anomalous absorption dominates. Pressure gradient causes a depletion of the electron density in the center of theheating region along the field line [Hansen et al, 1989[Hansen et al, , 1992bBlaunstein, 1996;Mingaleva et al, 2003Mingaleva et al, , 2009]. Ohmic heating is not expected to produce huge changes of ionospheric electron density and temperature.…”

Section: Introductionmentioning

confidence: 99%

A numerical study of large‐scale ionospheric modulation due to the thermal process by powerful wave heating

Zhou

Wang

et al. 2016

JGR Space Physics

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We present a three‐dimensional numerical model of large‐scale ionospheric electron density and temperature modulation by powerful electromagnetic waves by incorporating the transport equations and the three‐dimensional ray‐tracing algorithm. Based on this numerical model, the changes of ionospheric electron density and temperature at nighttime are investigated. The simulation results present (1) the ionospheric electron temperature enhancement due to the energy absorption; (2) the ionospheric electron density depletion at the reflection region and enhancement at the upper/lower region along the field line due to the thermal pressure; and (3) large‐scale field‐aligned irregularities (FAIs) due to the thermal self‐focusing instability with transverse scale of ~10 km. The results are quantitatively consistent with the previous theoretical predictions and experimental observations, which indicate that the thermal processes play an important role in the ionospheric electron density/temperature modulation and large‐scale FAI generation.

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Model simulation of the large-scale high-latitude F-layer modification by powerful HF waves with different modulation

Cited by 7 publications

References 43 publications

Numerical Simulation of the Time Evolution of Small-Scale Irregularities in the F-Layer Ionospheric Plasma

Numerical Simulation of the Time Evolution of Small-Scale Irregularities in the F-Layer Ionospheric Plasma

Simulation study of the large-scale modification of the mid-latitude F-layer by HF radio waves with different powers

A numerical study of large‐scale ionospheric modulation due to the thermal process by powerful wave heating

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