Intermittency of turbulent aeroelectric fieldстатья
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Аннотация:On the basis of multifra ctal formalism with the use of a database of Borok Geophysical
Observatory [58°04′ N and 38°14′ E] a complex of energy and fractal indexes of the aeroelectric
field dynamics was analyzed. It is shown that in most cases the short-period (frequency band
Δf=0.001 –1 Hz) aeroelectric field pulsations possess the property of self-similarity. However
the intermittency of the aeroelectric field is detected inside the time intervals of transitional
conditions of the lower atmosphere. Intermittency of the aeroelectric field is characterized by
non-Gaussian distributions of the aeroelectric field increments, a set of the power law of a
slope index of spectral density in the frequency decade 0.01 –0.1 Hz, an extension of the
multifractal spectrum and a deviation of the scaling exponent from a linear dependence. In
conditions of unsteady stratification the aeroelectric field pulsations are monofractal and arise
in consequence of a space charge transfer by locally-isotropic homogeneous turbulence.