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Hyrdoacoustic Ocean Exploration

Author: Iftikhar B. Abbasov
Publisher: John Wiley & Sons
ISBN: 1119323770
Size: 21.92 MB
Format: PDF
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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.

Ocean Acoustic Tomography

Author: Walter Munk
Publisher: Cambridge University Press
ISBN: 9780521115360
Size: 53.94 MB
Format: PDF, ePub
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This book gives a comprehensive presentation of the underlying oceanography and mathematics necessary to understand and develop a practical system of transmitters and receivers to interpret the behavior of the oceans. It covers the forward and inverse tomography problem, as well as numerous models for data interpretation. Also included is an epilogue outlining the history of tomographic techniques. It should prove a valuable resource to oceanographers and climatologists, as well as applied mathematicians and engineers interested in applications of fluid mechanics tools.

Underwater Technology

Publisher: Institute of Electrical & Electronics Engineers(IEEE)
ISBN: 9780780342736
Size: 48.26 MB
Format: PDF, Kindle
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A primary goal of IEEE OES is to take its symposiums around the world, where emerging technology and applications can be synthesized into solutions for the future. "Key Issues for the Global Underwater Environment" provides a thematic umbrella under which the problems and potential long term solutions which concern not only the Pacific Rim countries, but the world in general are discussed.