par J. LACAZE* et A. GRIGORIU**
* Faculté des Sciences de Pau – Laboratoire Hydrodynamique de
la Pollution Atmosphérique, Pau, France
** Faculté de Physique – Laboratoire de Physique de l'Atmosphère,
Bucarest, Roumanie
Firstly, in the paper, the difficulties arising in the classical methods
of the mean wind determinations in the lower tropospheric layer, are point
out.
Then, the Authors present a theory of a new version of the acoustical method,
namely the emission in altitude of an optical signal accompagnied by an acoustical
one. At the ground there are the corresponding receivers. The radiosounding
is also necessary. The uncertainty is low. The method is sitable for the study
of the orographic influence on the wind and for the problems of the atmospheric
pollution diffusion.