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Books > Earth & environment > Geography > Physical geography
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Hyrdoacoustic Ocean Exploration - Theories and Experimental Application (Hardcover)
Loot Price: R4,485
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Hyrdoacoustic Ocean Exploration - Theories and Experimental Application (Hardcover)
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The only book that offers a comprehensive and fully up-to-date
coverage of hydroacoustic ocean exploration, this work deals with
the diagnostics of non-uniformities in a water medium using the
hydroacoustic parametric antenna. The non-uniformities of the water
medium in the study are of geometrically regular shape, i.e., the
shape of a sphere, a cylinder, and a spheroid. An account is given
of theoretical and experimental studies of wave processes that
occur in the event of the scattering of non-linearly interacting
acoustic waves at a sphere, a cylinder, and a spheroid. Scattering
problems are formulated; solutions to the inhomogeneous wave
equation are found in the first and second approximations using the
successive approximations method. For the first time,
high-frequency asymptotic expressions of acoustic pressure for all
spectral components of the secondary field are obtained for the
nonlinear scattering problem. The scattering diagrams are
calculated and plotted, and then analyzed and compared. Results of
experimental studies of the parametric acoustic antenna field
scattering at solid steel spheres are presented. Experimental
scattering diagrams both for the parametric antenna pump waves and
for the secondary field waves including the difference frequency
wave, the sum frequency wave, and the second harmonic wave are
presented. 3D modeling of wave processes is also considered. A must
have for researchers and specialists in nonlinear hydroacoustics
and ocean acoustics; it also may be of use for postgraduates and
students specializing in hydroacoustics and ocean exploration.
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