Interpretation of the data of simultaneous sodar measurements of vertical profiles of CT 2 V 2
| Autor: | Lyudmila G. Shamanaeva |
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| Rok vydání: | 2000 |
| Předmět: | |
| Zdroj: | SPIE Proceedings. |
| ISSN: | 0277-786X |
| DOI: | 10.1117/12.411960 |
| Popis: | Based on the method suggested by the author, the data of acoustic sounding with the Zvuk-2 three-channel Doppler sodar with operating frequency 1700 Hz capable of measuring the backscattered signal power are interpreted. A closed iterative algorithm considers the excess turbulent attenuation of a sodar pulse when it propagates along the path from the transmitter to the sounded volume and back to the receiver. Synchronous vertical profiles of the thermal CT2(z) and velocity CV2(z) structure parameters are obtained for altitudes up to 515 m. Cases of synchronous altitude behavior of CT2 and CV2 were observed along with cases where the minimum in the CV2 profile corresponded to the maximum in the CT2 profile. Simultaneous measurements show that the main contribution to the refractive index structure parameter Cn2(z) and hence to the turbulent sound attenuation in the above-indicted altitude range comes from the dynamic turbulence. Altitude behavior of the sound refractive index structure parameter and the turbulent energy dissipation rate are discussed.© (2000) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only. |
| Databáze: | OpenAIRE |
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