Altitude distribution of electron concentration in ionospheric D-region in presence of time-varying solar radiation flux
arXiv:1204.4306 · doi:10.1016/j.nimb.2011.10.019
Abstract
In this paper, we study the influence of solar flares on electron concentration in the terrestrial ionospheric D-region by analyzing the amplitude and phase time variations of very low frequency (VLF) radio waves emitted by DHO transmitter (Germany) and recorded by the AWESOME receiver in Belgrade (Serbia) in real time. The rise of photo-ionization rate in the ionospheric D-region is a typical consequence of solar flare activity as recorded by GOES-15 satellite for the event on March 24, 2011 between 12:01 UT and 12:11 UT. At altitudes around 70 km, the photo-ionization and recombination are the dominant electron gain and electron loss processes, respectively. We analyze the relative contribution of each of these two processes in the resulting electron concentration variation in perturbed ionosphere.
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- Detection of acoustic-gravity waves in lower ionosphere by VLF radio waves
- Sensing the Earth's low ionosphere during solar flares using VLF signals and GOES X-ray data
- Electron production by solar Ly-α line radiation in the ionospheric D-region
- Diagnostics of plasma in the ionospheric D-region: detection and study of different ionospheric disturbance types
- Ionospheric D-region temperature relaxation and its influences on radio signal propagation after solar X-flares occurrence