first eiscat measurement of electron-gas temperature in the artificially heated d-region ionosphere

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2000
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Abstract
The ionospheric electron gas can be heated artificially by a powerful radio wave. According to our modeling, the maximum effect of this heating occurs in the D-region where the electron temperature can increase by a factor of ten. Ionospheric plasma parameters such as Ne, Te and Ti are measured by EISCAT incoherent scatter radar on a routine basis. However, in the D-region the incoherent scatter echo is very weak because of the low electron density. Moreover, the incoherent scatter spectrum from the D-region is of Lorentzian shape which gives less information than the spectrum from the E- and F-regions. These make EISCAT measurements in the D-region difficult. A combined EISCAT VHF-radar and heating experiment was carried out in November 1998 with the aim to measure the electron temperature increase due to heating. In the experiment the heater was switched on/off at 5 minute intervals and the integration time of the radar was chosen synchronously with the heating cycle. A systematic difference in the measured autocorrelation functions was found between heated and unheated periods.

Key words: Ionosphere (active experiments; plasma temperature and density; wave propagation)

Reference Key
kero2000annalesfirst Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;A. Kero;T. Bösinger;P. Pollari;E. Turunen;M. Rietveld
Journal journal of food measurement and characterization
Year 2000
DOI
10.1007/s00585-000-1210-8
URL
https://www.ann-geophys.net/18/1210/2000/angeo-18-1210-2000.pdf
Keywords
cosmic physics sciencephysicsgeophysics

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