Программа и тезисы докладов - Институт космических ...

The initial assessment of the electromagnetic equipment quality is performed
and the reasons for insufficient information content of current measurement channels
are discussed. We also present the examples of ionosphere whistlers detected
over the areas with thunder activity.
lighTning diScharge radio eMiSSion according
To The daTa FroM radioFrequency analyzer
V. M. Gotlib, V. N. Karedin, M. S. Dolgonosov
Space Research Institute of Russian Academy of Russian, IKI RAN, Moscow, Russia
The report includes a block diagram of radiofrequency analyzer, basic device
parameters, the peculiarities of reception, relating to technogeneous disturbance,
and, besides, the description of chosen zones and time of lightning activity observations.
We also present the data on the device functioning statistics and typical examples
of lightning activity under observation (wave functions and spectrograms).
Apart from that, the parameters of lightning discharges are evaluated and possible
ways of radiofrequency measuring modernization are discussed.
Fine radio eMiSSion STrucTure oF high-alTiTude
ThunderSTorM ForMaTionS according To “chibiS-M”
M. S. Dolgonosov, V. M. Gotlib
Space Research Institute of Russian Academy of Russian, IKI RAN, Moscow, Russia
Micro-satellite “Chibis-M” was sent into orbit in the beginning of 2012. The
satellite is intended for the complex investigation of processes taking place within a
thunderstorm cloud. This report comprises the results of lightning activity analysis
based on radio emission (in the range of 26…68 MHz) data, provided by the radiofrequency
analyzer. The main issues we are meaning to cover in the report are as
follows: the classification of detected events and their characteristics, the assessment
of the electric discharge altitude above the Earth’s surface, the explanation of lightning
radio pulse discrete nature and, besides, the estimation of step leader motion.
As we see it, the presented microsecond impulse characteristics can be associated
with the fractal model of charge distribution within a thunderstorm area, described
in Hayakawa et al., JASTP, 2008. In order to check this hypothesis we will present
a comparative analysis of topological dimensions of microsecond impulses, taken
with the use of both “Chibis-M” and the theoretical model from Hayakawa et al.,
JASTP, 2008.
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