Comparison of whistlers with lightning activity

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   Investigation of whistlers, appearing in the result of lightning discharge
   radiation after propagation through the ionosphere along the Earth
   magnetic field line, has been carried out to detect new relations between
   phenomena and processes in the ionosphere and magnetosphere. For automatic
   whistler detection, a recognition algorithm has been developed and
   realized in the basis of which is a two-dimensional correlation of initial
   signal and etalon signal spectra obtained in the result of approximation
   of non-stationary spectrum of dependence of a big number of whistlers by
   exponential function. Applying the obtained approximation, etalon signal
   spectrum, similar to received whistler spectrum, has been plotted.

   The obtained intermediate results for automatic detection of whistlers
   have been compared with the data of World Wide Lightning Location Network
   (WWLLN). The relation of increase of the registered whistler number with
   the increase of lightning activity in magnetically conjugated points
   (Kamchatka, Russia, and Canberra, Australia) has been analyzed. It has
   been discovered that lightning discharges, generating atmospherics in the
   magnetically conjugated point, do not always have high correlation with
   whistler number registered in Kamchatka, this number may reach up to
   several thousands. It is possible that lightning discharges generate
   whistlers, which propagate in the Earth-ionosphere waveguide, even if a
   lightning source is at a considerable distance from the conjugated point.