Physics of Sound in the Sea
Physics of Sound in the Sea

Author:

Publisher: Peninsula Pub

Published: 1989

Total Pages: 586

ISBN-13: 9780932146243

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PHYSICS OF SOUND IN THE SEA is the distillate of the brightest, most creative minds in the underwater acoustics community during World War II. The primary wartime effort to understand the underwater acoustic environment for the purpose of submarine and antisubmarine warfare was directed by the Subsurface Warfare Division of the National Defense Research Committee. This division organized and directed programs and studies to combine theory with experiment in order to characterize underwater sound transmission for immediate wartime application. Participating in these studies were staff members from Woods Hole Oceanographic Institution, Scripps Institution of Oceanography, University of California, Columbia, Harvard, Massachusetts Institute of Technology, and the U.S. Navy - namely, the Bureau of Ships (now Naval Sea Systems Command), the Radio and Sound Laboratory (now Naval Underwater Systems Center at San Diego), and the Naval Research Laboratory. Dr. Lyman Spitzer, Jr., Director of the Sonar Analysis Group within the Subsurface Warfare Division was responsible for the preparation of Physics of Sound in the Sea. His key editors, named in the Foreword of the book, and many others, unmanned, created an authoritative, understandable underwater sound reference book every bit as useful today as when first written.

Fundamentals of Acoustical Oceanography
Fundamentals of Acoustical Oceanography

Author: Herman Medwin

Publisher: Academic Press

Published: 1997-11-05

Total Pages: 739

ISBN-13: 0080532160

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The developments in the field of ocean acoustics over recent years make this book an important reference for specialists in acoustics, oceanography, marine biology, and related fields. Fundamentals of Acoustical Oceanography also encourages a new generation of scientists, engineers, and entrepreneurs to apply the modern methods of acoustical physics to probe the unknown sea. The book is an authoritative, modern text with examples and exercises. It contains techniques to solve the direct problems, solutions of inverse problems, and an extensive bibliography from the earliest use of sound in the sea to present references.Written by internationally recognized scientists, the book provides background to measure ocean parameters and processes, find life and objects in the sea, communicate underwater, and survey the boundaries of the sea. Fundamentals of Acoustical Oceanography explains principles of underwater sound propagation, and describes how both actively probing sonars and passively listening hydrophones can reveal what the eye cannot see over vast ranges of the turbid ocean. This book demonstrates how to use acoustical remote sensing, variations in sound transmission, in situ acoustical measurements, and computer and laboratory models to identify the physical and biological parameters and processes in the sea.* Offers an integrated, modern approach to passive and active underwater acoustics* Contains many examples of laboratory scale models of ocean-acoustic environments, as well as descriptions of experiments at sea* Covers remote sensing of marine life and the seafloor* Includes signal processing of ocean sounds, physical and biological noises at sea, and inversions* resents sound sources, receivers, and calibration* Explains high intensities; explosive waves, parametric sources, cavitation, shock waves, and streaming* Covers microbubbles from breaking waves, rainfall, dispersion, and attenuation* Describes sound propagation along ray paths and caustics* Presents sound transmissions and normal mode methods in ocean waveguides

Fundamentals of Ocean Acoustics
Fundamentals of Ocean Acoustics

Author: L.M. Brekhovskikh

Publisher: Springer Science & Business Media

Published: 2006-04-10

Total Pages: 289

ISBN-13: 0387216553

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This book provides an up-to-date introduction to the theory of sound propagation in the ocean. The text treats both ray and wave propagation and pays considerable attention to stochastic problems such as the scattering of sound at rough surfaces and random inhomogeneities. An introductory chapter that discusses the basic experimental data complements the following theoretical chapters. New material has been added throughout for this third edition. New topics covered include: - inter-thermocline lenses and their effect on sound fields - weakly divergent bundles of rays - ocean acoustic tomography - coupled modes - sound scattering by anisotropic volume inhomogeneities with fractal spectra - Voronovich's approach to sound scattering from the rough sea surface. In addition, the list of references has been brought up to date and the latest experimental data have been included.

Fundamentals of Ocean Acoustics
Fundamentals of Ocean Acoustics

Author: Leonid M. Brekhovskikh

Publisher: Springer Science & Business Media

Published: 2013-06-29

Total Pages: 281

ISBN-13: 3662073285

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As man turns his attention from the overcrowded continents of this planet and explores the spaciousness of the ocean, the applications of ocean acoustics become increasingly numerous and important. This book pro- vides an up-to-date introduction to the theory of sound propagation in the ocean, with much new material having been added throughout the second edition. It includes both ray and wave treatments and considerable attention is paid to stochastic problems such as the scattering of sound at rough surfaces and random inhomogeneties. An introductory chapter that discusses the basic experimental data complements the following theoretical chapters.

Natural Physical Sources of Underwater Sound
Natural Physical Sources of Underwater Sound

Author: B.R. Kerman

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 750

ISBN-13: 9401116261

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To place this book in perspective it is useful for the reader to be aware of the recent history of the topic of underwater sound generation at the ocean surface by natural mechanisms. A meeting in Lerici, Italy in 1987 was convened within the NATO Advanced Research Workshop series, to bring together underwater acousticians and ocean hydrodynamicists to examine various mechanisms which generate sound naturally at the ocean surface. A record of that meeting was published in the NATO scientific publication series in 1988 under the title 'Sea Surface Sound'. That meeting was successful in inspiring and co ordinating both participants and non-attending colleagues to examine some key issues which were raised during the course of presentations and discussions. The understanding among those present was that another meeting should be convened 3 years hence to report and review progress in the subject. Accordingly the second conference was convened in Cambridge in 1990, whose proceedings are presented here. This volume represents a very gratifying increase in only a 3 year interval in our understanding of a number of physical processes which generate sound at the peripheries of oceans. In fact it represents both the acceleration of singular effort as well as the development of interdisciplinary sophistication and co-operation. The enthusiasm, goodwill, and intense scientific curiosity which characterized the Lerici meeting carried through to Cambridge. The collegial atmosphere established by the participants was perfectly timed to foster another major advance in studies of ocean surface sound.

Tables of the Velocity of Sound in Sea Water
Tables of the Velocity of Sound in Sea Water

Author: L. S. Bark

Publisher: Elsevier

Published: 2014-05-23

Total Pages: 218

ISBN-13: 1483164950

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Tables of the Velocity of Sound in Sea Water contains tables of the velocity of sound in sea water computed on a "Strela-3" high-speed electronic computer and a T-5 tabulator at the Computational Center of the Academy of Sciences. Knowledge of the precise velocity of sound in sea water is of great importance when investigating sound propagations in the ocean and when solving practical problems involving the use of hydro-acoustic devices. This book demonstrates the computations made for the velocity of sound in sea water, which can be found in two ways: by direct measurement with the aid of suitable equipment, and by calculation from formula expressing the dependence of the velocity on the temperature and salinity of the water. This book will be of great value to researchers and students.