The results of experimental study of the spatial structure of the scalar-vector acoustic field formed during towing of a tone low-frequency emitter over the shelf of the Sea of Japan are discussed. The experiment was accomplished by towing the source of a tone signal with a frequency of 134 Hz at a depth of 20 m over various acoustic tracks at distances up to 10 km from an integrated receiving system consisting of a receiver of acoustic pressure and three orthogonal components of the acoustic pressure gradient. Special attention has been focused on study of the interference structure of the scalar and vector fields with provision of the technical reliability of the method and the results of the experiment under controlled hydrological conditions. We discuss the quantitative characteristics and peculiarities of the interference formation along tracks that differ in depth. The unique results of comparing the horizontal and vertical components of the fields are most interesting of all. They allowed us to reveal the existence of eddy structures in the acoustic field of the source over several tracks. We analyze the possibility of practical application of the results of our research.
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Akulichev V. A. Bezotvetnykh V. V. Burenin A. V. Voytenko E. A. Golov A. A. Morgunov Yu. N. Strobykin D. S. Tagiltsev A. A. 《Doklady Earth Sciences》2018,480(2):796-799
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V. A. Akulichev V. V. Bezotvetnykh J. N. Morgunov Yu. A. Polovinka 《Doklady Earth Sciences》2010,432(2):775-777
In this paper, the results of experiments conducted on the Sea of Japan shelf are applied and discussed. The aim of these
experiments was to study regularities in the formation of impulse characteristics for wave conductors under variable hydrological
conditions. It has been shown that, in order to determine the distance and coordinates of underwater devices precisely when
working on a shelf, one should identify the first and last impulses in impulse characteristics for the wave conductor, measure
their arrival times, and multiply them to calculate the values of effective sonic velocity along the propagation routes of
these impulses. 相似文献
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Victor A. Akulichev Vladimir V. Bezotvetnykh Alexander V. Burenin Evgeny A. Voytenko Sergey I. Kamenev Yury N. Morgunov Yury A. Polovinka Dmitry S. Strobykin 《Ocean Science Journal》2006,41(2):105-111
In this paper, the lines of investigation on a problem of the development of remote acoustic sensing methods in oceanology
are formulated. This paper summarizes the results of investigations into the possibilities for monitoring temperature and
flow fields in shallow seas. In the discussed experiments, the instrumentation being constituents of the complex for longduration
remote monitoring of marine medium climatic variability and that of the acoustic tomography of shallow sea dynamic processes
is used. The acoustic instruments were located on the POI FEB RAS acousto-hydrophy sical polygon (Pacific Oceanological Institute,
Far Eastern Branch of the Russian Academy o f Sciences) near the Gamov Peninsula. Acoustic receiving and transmitting systems
operating with multiplex phase-manipulated signals (of M-codes) at frequency range 250-2500 Hz form the basis for this complex. 相似文献
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