Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2009. Issue.6. Vol.1. P. 139-145
The studying of structure functions scaling parameters for the
thunderclouds atmosphere electricity
Н.С. Ерохин
1, Н.Н. Зольникова
1, Л.А. Михайловская
1, С.Л. Луков
21 Институт космических исследований РАН, Россия, 117997 Москва, ул. Профсоюзная, 84/32
2 Институт космических исследований БАН, Болгария, 1000 София, ул. Московская, 6
It is considered scaling characteristics of structure functions for electric fluctuations on the basis of
experimental data from the electric field E(z) height profile measurements in the thundercloud. The
analytical approximations of E(z) experimental plots have been elaborated by the usage of localized
functions. It has been shown that the typical magnitudes of large-scale electric potential variations may
large enough up to hundred MegaVolts for the layer width of the order of kilometers. It is revealed the
presence of strong fluctuations for the electric charge volume density having typical height scales in the
range from tens meters to hundred ones. Structure functions of electric field fluctuations have been
calculated numerically. It is founded the inertial intervals of electric turbulence for small scales range and
middle one. Scaling exponents for these intervals are obtained. The structure functions scaling
considered gives the evidence of coherent structures and the turbulence intermittency presence. Results
of analysis performed are of the great interest for the investigations of the intense atmospheric vortices
electric structures role in the generation of hydrodynamical helicity and also for the maintenance of the
self-consistent, essentially inhomogeneous gas motion observed in the powerful atmospheric vortices. It
is of the interest for the studying of generation mechanisms of tropospheric vortices imprints at the
ionospheric heights.
Keywords: Atmospheric electricity, fluctuations, structure functions, scaling exponent, height profile, thundercloud, vortices, electric field, inertial interval, turbulence
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