It should be noted that numerical and field experimental data, for assessment of mode group delay times, are in excellent agreement with each other. More detailed analysis enables us to reveal the reflected signal effecting the distortion of peaks, and the direct signal effecting the distortion of peaks, and the direct signal has the same effect. Peak amplitudes characterize the mode exciting conditions and propagation losses connected with moving apart, surface-bottom interaction, scattering and absorption.
4. Conclusron
Our studies demonstrate the possibllity of estimating the waveguide impulse characteristic under conditions of the stationary travel promptly. Acoustical monitoring of the hydrophysical parameters of sea environment can be implemented on a basis of the results. The receiving/transmitting system will be added with a 12-element vertical array, a 12-element horizontal array, a 400-Hz transducer and another 250-Hz transducer. The next step is going to be acoustical monitoring other areas of the Sea of Japan. For example, a bottom self-suffrcient station will be set up at a depth of 300-400 m in the Kito-Yamato Bank.
References
1. Akulichev V. A. et al, Hydrophysical monitoring of the Sea of Japan, Ocean Acoustics, Proc. of Acad. L. M. Brekhovskikh's School-Seminar, GEOS, Moscow, Russia, 1998, pp. 171-174.
2. Chuprov S. D., Maltsev N. E., Invariant of spatially frequency interference structure of acoustic field in layered ocean, Docl. Acad. Nauk SSSR, 257(2), 1981, pp. 475-479.
3. Aksyonov S. P., Kamenev S. I., Kasatkin B. A., Some characteristics of acoustic field in the wedge lying on half-space, Akust. Zh., 32(5), 1986, pp. 585-590.
4. Tikhonov V. I., Statistical Radio Technique, Radio & Communications, Moscow, Russia, 1982.
