Comparison of singular-optical and statistical approaches for investigations of turbulence tasks

Abstract

Experimental data of our turbulence measurements (by ultrasonic digital sensors) in the various areas and meteosituations show that large areas are often observed in open atmosphere, in which one large coherent structure has the main influence. Turbulence in such areas is called as coherent. Incoherent Kolmogorov turbulence is detecting, as a rule, on sites with a flat surface. Coherent turbulence differs from Kolmogorov turbulence by the faster decrease of a time spectrum in an inertial interval (f -8/ 3 instead of f -5/ 3 ) and the smaller contribution of the high-frequency components.