Abstract
The method of acoustic pulse sounding of the atmospheric boundary layer is used to study spatial coherence and frequency spectra of the pulse travel time fluctuations between the pulse source and the triangular set of receivers 2.5 km apart from each other. The wind speed fluctuations were measured up to 200–300 m with the use of SODAR and the anemometers placed on the mast of 56-m height. The maximum coherence between the wind speed and pulse travel time fluctuations was obtained for the period of 8 min. This period is thought to be associated with the ducted internal waves in the troposphere. The use of the pulse sounding for the acoustic tomography of the atmospheric boundary layer is proposed.
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