The results of two experiments on measuring the vector-phase structure of the acoustic field at the hydroacoustic testing ground of Moscow State University in the water area of Klyazma reservoir in the winter and summer seasons are discussed. To register sound pressure and three mutually orthogonal components of vibrational velocity, autonomous stations containing vector receivers and sound pressure receivers were installed at the bottom of the water area. For the summer conditions, the source of the noise signal was a ship passing near the stations. Based on the experimental data, the dependences of the decay of the relative levels of the various components of the sound field on the distance to the source are calculated. The possibility of detecting the signal of an air moving noise source (passenger plane) by bottom stations under the conditions of the experiment under consideration is demonstrated. For winter conditions, in the presence of ice cover, spatial anisotropy of the natural noises of the water area was revealed.
43.58.+z Acoustical measurements and instrumentation
$^1$Faculty of Physics, Moscow State University, chair of Acoustics.\
$^2$Shirshov Oceanology Institute of the Russian Academy of Sciences\
$^3$The Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences
Science News of the Faculty of Physics, Lomonosov Moscow State University
This new information publication, which is intended to convey to the staff, students and graduate students, faculty colleagues and partners of the main achievements of scientists and scientific information on the events in the life of university physicists.