Propagation of lower hybrid resonance waves in depleted-plasma regions in the upper auroral ionosphere

Pasmanik, D. L.; Demekhov, A. G.; Trakhtengerts, V. Yu.; Titova, E. E.; Rycroft, M. J.
April 2009
Radiophysics & Quantum Electronics;Apr2009, Vol. 52 Issue 4, p252
Academic Journal
We study theoretically the propagation of lower-hybrid resonance (LHR) waves in the auroral ionospheric plasma. The ray-tracing technique is used to study the properties of LHR wave propagation with account of a large-scale inhomogeneity both along and across the geomagnetic field. It is shown that wave refraction in such an inhomogeneous medium can result in direct transformation of LHR waves whose wave normals make large angles with the geomagnetic field into whistler-mode waves, whose wave vectors are close to the geomagnetic-field direction and which can therefore pass through the ionosphere to the ground. The parameters of LHR waves which can thus be transformed into whistler-mode waves are found. The transformation process considered can be important for interpreting ground-based observations of ELF waves.


Related Articles

  • Waveguide radio-wave propagation in the equatorial ionosphere according to the Interkosmos-19 data. Karpachev, A.; Zhbankov, G.; Telegin, V. // Geomagnetism & Aeronomy;Mar2014, Vol. 54 Issue 2, p207 

    Additional strongly remote (up to 2000 km) radio-signal reflection traces on Intercosmos-19 ionograms obtained in the equatorial ionosphere have been considered. These traces, as a rule, begin at frequencies slightly lower than the main trace cutoff frequencies, which indicates that an...

  • Long-term and transient forcing of the low ionosphere monitored by SAVNET. Raulin, Jean-Pierre; Bertoni, Fernando C. P.; Gavilán, Hernan R.; Samanes, Jorge C. // AIP Conference Proceedings;10/20/2010, Vol. 1286 Issue 1, p103 

    In this paper we present the main findings obtained by the South America VLF NETwork since its installation in the South America territory. In particular we show the capability of the VLF technique to monitor the long-term solar activity and transient solar and geomagnetic disturbances. On long...

  • Ionospheric response to the total solar eclipse in India on 22 July, 2009. Chauhan, Vishal; Agrawal, Shikha; Singh, O. P.; Singh, Birbal // AIP Conference Proceedings;10/20/2010, Vol. 1286 Issue 1, p188 

    Since The variations of Total Electron Content (TEC) and amplitude of the fixed frequency VLF transmitter signal (f = 19.8 kHz, NWC, Australia) are studied at Agra (Geographic Lat. 27.2°N, Long. 78°E), India during the total solar eclipse of 22 July, 2009 which was longest seen in India...

  • High-latitude geomagnetic disturbances during the initial phase of a recurrent magnetic storm (from February 27 to March 2, 2008). Kleimenova, N.; Kozyreva, O.; Manninen, J.; Raita, T.; Kornilova, T.; Kornilov, I. // Geomagnetism & Aeronomy;Dec2011, Vol. 51 Issue 6, p730 

    A complex of geophysical phenomena (geomagnetic pulsations in different frequency ranges, VLF emissions, riometer absorption, and auroras) during the initial phase of a small recurrent magnetic storm that occurred on February 27-March 2, 2008, at a solar activity minimum has been analyzed. The...

  • VLF whistler wave activity and effects of geomagnetic disturbances at low latitudes. Patel, R. P.; Singh, S.; Singh, A. K.; Singh, R. P. // Bulletin of the Astronomical Society of India;Dec2007, Vol. 35 Issue 4, p655 

    The disturbances on the solar surface lead to the enhanced injection of energetic charged particles into the inner magnetosphere, which modifies the electrodynamic features of ionosphere and magnetosphere. The electrodynamic properties control the generation and propagation characteristics of...

  • Transequatorial VHF Propagation. Jones, Jon // QST;Jan2012, Vol. 96 Issue 1, p89 

    The article focuses on transequatorial ionospheric propagation (TEP), which normally happens in the late afternoon and evening when propagation of signals happen in very long paths. Two bands of high electron densities that forms an F-layer is the main driver of the afternoon TEP while evening...

  • VLF Technique and Science in India. Chakravarty, S. C. // AIP Conference Proceedings;10/20/2010, Vol. 1286 Issue 1, p83 

    Since IGY period (1957-58), natural and artificially produced Very Low Frequency (VLF) electromagnetic radiations are being recorded at large number of ground stations and on board satellites to study various wave-plasma interactive phenomena. The terrestrial propagation of these VLF radio waves...

  • Long-term trends in the ionospheric F2 region with different solar activity indices. Mielic, J.; Bremer, J. // Annales Geophysicae (09927689);2013, Vol. 31 Issue 2, p291 

    A new comprehensive data collection by Damboldt and Suessmann (2012a) with monthly foF2 and M(3000)F2 median values is an excellent basis for the derivation of long-term trends in the ionospheric F2 region. Ionospheric trends have been derived only for stations with data series of at least 22...

  • Geomagnetic cutoff effect as an evidence for the corpuscular nature of anomalous VLF disturbances. Remenets, G.; Beloglazov, M. // Geomagnetism & Aeronomy;Jan2015, Vol. 55 Issue 1, p98 

    The effect of geomagnetic cutoff with respect to the primary ionizing flux, which caused anomalous VLF disturbances on a completely auroral radio path with a moderate length (∼900 km), has been proved. Abnormality manifested itself in a qualitative similarity of amplitude and phase...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics