• Science

Fundamentals of Acoustical Oceanography


Author: Herman Medwin,Clarence S. Clay
Publisher: Academic Press
ISBN: 9780080532165
Category: Science
Page: 712
View: 7862
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

    • Science

Acoustical oceanography

principles and applications
Author: Clarence Samuel Clay,Herman Medwin
Publisher: John Wiley & Sons
ISBN: N.A
Category: Science
Page: 544
View: 5860

    • Science

Sounds in the Sea

From Ocean Acoustics to Acoustical Oceanography
Author: Herman Medwin
Publisher: Cambridge University Press
ISBN: 9780521829502
Category: Science
Page: 643
View: 8428
Underwater acousticians and acoustical oceanographers use sound as the premier tool to determine the detailed characteristics of physical and biological bodies and processes at sea. Sounds in the Sea is a comprehensive and accessible textbook on ocean acoustics and acoustical oceanography. Chapters 1–9 provide the basic tools of ocean acoustics. The following fifteen chapters are written by many of the world's most successful ocean researchers. These chapters describe modern developments, and are divided into four sections: Studies of the Near Surface Ocean; Bioacoustical Studies; Studies of Ocean Dynamics; Studies of the Ocean Bottom. This is an invaluable textbook for any course in ocean acoustics for the physical and biological ocean sciences, and engineering. It will also serve as a reference for researchers and professionals in ocean acoustics, and an excellent introduction to the topic for scientists from related fields.

    • Science

Fundamentals of Ocean Acoustics


Author: Leonid M. Brekhovskikh,Yury P. Lysanov
Publisher: Springer Science & Business Media
ISBN: 3662073285
Category: Science
Page: 270
View: 576
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.

    • Science

Computational Ocean Acoustics


Author: Finn B. Jensen,William A. Kuperman,Michael B. Porter,Henrik Schmidt
Publisher: Springer Science & Business Media
ISBN: 9781441986788
Category: Science
Page: 794
View: 8152
Senior level/graduate level text/reference presenting state-of-the- art numerical techniques to solve the wave equation in heterogeneous fluid-solid media. Numerical models have become standard research tools in acoustic laboratories, and thus computational acoustics is becoming an increasingly important branch of ocean acoustic science. The first edition of this successful book, written by the recognized leaders of the field, was the first to present a comprehensive and modern introduction to computational ocean acoustics accessible to students. This revision, with 100 additional pages, completely updates the material in the first edition and includes new models based on current research. It includes problems and solutions in every chapter, making the book more useful in teaching (the first edition had a separate solutions manual). The book is intended for graduate and advanced undergraduate students of acoustics, geology and geophysics, applied mathematics, ocean engineering or as a reference in computational methods courses, as well as professionals in these fields, particularly those working in government (especially Navy) and industry labs engaged in the development or use of propagating models.

    • Technology & Engineering

Ocean and Seabed Acoustics

A Theory of Wave Propagation
Author: George V. Frisk
Publisher: Pearson Education
ISBN: 0132441543
Category: Technology & Engineering
Page: 300
View: 5119
Respected scientist and educator George V. Frisk draws on his extensive professional experience to demonstrate how the ocean environment provides an excellent setting in which to display general principles of wave propagation that are also applicable to other areas of wave physics. Ocean and Seabed Acoustics proceeds with a derivation of elementary solutions to the wave equation in free space and then progressively addresses problems of increasing complexity. This book concludes with a discussion of acoustic wave propagation due to a point source in an inhomogeneous waveguide with lossy boundaries.

    • Science

Shallow Water Acoustics


Author: Boris G. Katsnelson,Valery G. Petnikov
Publisher: Springer Science & Business Media
ISBN: 9783540426448
Category: Science
Page: 267
View: 3241
The objective of this book is to present the main theoretical approaches and models in shallow water acoustics as well as different experimental results. The focus is primarily concentrated on physical results describing the sound field in wave length. The authors show dynamic phenomena (tides, internal waves) from the perspective of acoustic influence as well as the scattering of sound over the macroscopic body in shallow water waveguide. The method of acoustic probing can be used by physicists, geophysicists, geologists and oceanographers.

    • Science

Fundamentals and Applications of Ultrasonic Waves


Author: J. David N. Cheeke
Publisher: CRC Press
ISBN: 1420042130
Category: Science
Page: 480
View: 4762
Ultrasonics. A subject with applications across all the basic sciences, engineering, medicine, and oceanography, yet even the broader topic of acoustics is now rarely offered at undergraduate levels. Ultrasonics is addressed primarily at the doctoral level, and texts appropriate for beginning graduate students or newcomers to the field are virtually nonexistent. Fundamentals and Applications of Ultrasonic Waves fills that void. Designed specifically for senior undergraduates, beginning graduate students, and those just entering the field, it begins with the fundamentals, but goes well beyond the simple, general concepts of waves to a detailed treatment of ultrasonic waves in isotropic media. Addressing a wide range of topics, the author focuses on the physics of acoustic waves, their propagation, and the different modes that can be excited in various geometries. Strong emphasis on applications in the later chapters provides a concrete setting for the more formal and theoretical earlier discussions. Your search for the right introduction to ultrasonics is over. The clear, engaging prose, careful balance of theory and applications, and rigorous but accessible mathematical treatments in this book combine to build a solid foundation either for practical work in the field or moving on to higher-level studies.

    • Science

Marine Turbulence

Theories, Observations, and Models
Author: Helmut Z. Baumert
Publisher: Cambridge University Press
ISBN: 9780521837897
Category: Science
Page: 630
View: 1624
This 2005 book gives a comprehensive overview of measurement techniques and theories for marine turbulence and mixing processes. It describes the processes which control the mixing of greenhouse gases, nutrients, trace elements, and hazardous substances in our oceans and shelf seas - from local to planetary scales. These processes buffer climate changes and are centrally important for regional to global ecosystem dynamics. The publication also contains source codes of turbulence models and models of the upper-ocean mixing layer (COHERENS and GOTM), and observational data sets of turbulence characteristics or corresponding proxies of waters from all over the world. These can be found at www.cambridge.org/9780521153720. Written by a team of 53 world-leading experts, it represents a rich source of data and methods for students and scientists in oceanography, hydrology, limnology, and meteorology, as well as marine, naval and civil engineers.

    • Science

Fundamentals of Physical Acoustics


Author: David T. Blackstock
Publisher: John Wiley & Sons
ISBN: 9780471319795
Category: Science
Page: 541
View: 7782
Blackstock (mechanical engineering, U. of Texas) presents an introductory textbook on the physics of sound written for a two-semester graduate-level course. For part of the book, he attempts to keep the mathematics at a fairly basic level, while covering such topics as propagation, reflection and tr.

    • Science

Fundamentals of Shallow Water Acoustics


Author: Boris Katsnelson,Valery Petnikov,James Lynch
Publisher: Springer Science & Business Media
ISBN: 1441997768
Category: Science
Page: 540
View: 3861
Shallow water acoustics (SWA), the study of how low and medium frequency sound propagates and scatters on the continental shelves of the worlds oceans, has both technical interest and a large number of practical applications. Technically, shallow water poses an interesting medium for the study of acoustic scattering, inverse theory, and propagation physics in a complicated oceanic waveguide. Practically, shallow water acoustics has interest for geophysical exploration, marine mammal studies, and naval applications. Additionally, one notes the very interdisciplinary nature of shallow water acoustics, including acoustical physics, physical oceanography, marine geology, and marine biology. In this specialized volume the authors, all of whom have extensive at-sea experience in US and Russian research efforts, have tried to summarize the main experimental, theoretical, and computational results in shallow water acoustics, with an emphasis on providing physical insight into the topics presented.

    • Science

The Science and Applications of Acoustics


Author: Daniel R. Raichel
Publisher: Springer Science & Business Media
ISBN: 0387260625
Category: Science
Page: 660
View: 9177
This textbook treats the broad range of modern acoustics from the basics of wave propagation in solids and fluids to applications such as noise control and cancellation, underwater acoustics, music and music synthesis, sonoluminescence, and medical diagnostics with ultrasound. The new edition is up-to-date and forward-looking in approach. Additional coverage of the opto-acoustics and sonoluminescence phenomena is included. New problems have been added throughout.

    • Science

Fundamentals of Physical Acoustics


Author: David T. Blackstock
Publisher: John Wiley & Sons
ISBN: 9780471319795
Category: Science
Page: 541
View: 8851
Blackstock (mechanical engineering, U. of Texas) presents an introductory textbook on the physics of sound written for a two-semester graduate-level course. For part of the book, he attempts to keep the mathematics at a fairly basic level, while covering such topics as propagation, reflection and tr.

    • Science

Nonlinear Underwater Acoustics


Author: Boris Konstantinovich Novikov,Oleg Vladimirovich Rudenko,Valeriĭ Ivanovich Timoshenko
Publisher: Acoustical Society of America
ISBN: N.A
Category: Science
Page: 261
View: 6986
Contents: Parametric sound sources and receivers; Methods of calculation of nonlinear interactions in sound beams; Nonlinear interaction of plane waves; Method of the parabolic equation and basic results of linear diffraction theory; Parametric sound radiators with nondiffracting beams of pump waves; Calculation of different regimes of operation of the parametric radiator; Parametric receiving arrays; Operation of parametric radiators at high intensities of the pump waves; Thermal opto acoustic arrays; Construction features of parametric underwater devices; Experimental investigations and testing of parametric arrays; Parametric apparatus and the regions of their use, and Use of nomograms for calculation of the characteristics of a parametric radiator.

    • Science

Ocean Seismo-Acoustics

Low-Frequency Underwater Acoustics
Author: T. Akal,J.M. Berkson
Publisher: Springer Science & Business Media
ISBN: 1461322014
Category: Science
Page: 915
View: 2823
Seafloor investigation has long been a feature of not only seismology but also of acoustics. Indeed it was acoustics that produced depth sounders, giving us the first capability of producing both global and local maps of the seafloor. Subsequently, better instrumentation and techniques led to a clearer, more quantitative picture of the seabed itself, which stimulated new hypotheses such as seafloor spreading through the availability of more reliable data on sediment thickness over ocean basins and other bottom features. Geologists and geophysicists have used both acoustic and seismic methods to study the seabed by considering the propagation of signals arising from both natural seismic events and man-made impulsive sources. Although significant advances have been made in instrumentation, such as long towed geophysical arrays, ai r guns and ocean bot tom seismometers, the pic ture of the seafloor is still far from complete. Underwater acoustics concerns itself today with the phenomena of propagation and noise at frequencies and ranges that require an understanding of acoustic interaction at both of its boundaries, the sea surface and seafloor, over depths ranging from tens to thousands of meters. Much of the earlier higher frequency (>1 kHz) work included the characterization of the seafloor in regimes of reflection coefficients which were empirically derived from surveys. The results of these studies met with only limited success, confined as they were to those areas where survey data existed and lacking a physical understanding of the processes of reflection and scattering.

    • Technology & Engineering

Tropical Mariculture


Author: Sena S. De Silva
Publisher: Academic Press
ISBN: 0080543308
Category: Technology & Engineering
Page: 487
View: 3711
Tropical Mariculture takes an in-depth look at developmental activities in a growing industry striving towards sustainability and environmental integrity. All of the contributors to this book have considerable experience and expertise in the field of tropical mariculture, and this is the first book to bring expert contributions together. The topics covered are wide and varied, ranging from general issues such as the impact of mariculture on coastal ecosystems to genetic improvement of cultured marine species, as well as the specifics of breeding selected marine species of current importance, such as groupers and sea bass. Significant coverage is also given to the problems of larval rearing in inland aquaculture as well as the demands of water- and land-based resources in a tropical environment. This book will be essential for everyone working in and researching tropical mariculture. Key Features * Looks at developmental activities in tropical mariculture * All of the contributors are experts in the field * Covers specific breeding problems and larval rearing * Studies the environmental impact of inland aquacultural activities * Provides detailed examples of cultivated species in the tropics * Compiles mariculture strategies and discusses example species * First book to give an overview of tropical mariculture

    • Science

Waves in Oceanic and Coastal Waters


Author: Leo H. Holthuijsen
Publisher: Cambridge University Press
ISBN: 1139462520
Category: Science
Page: N.A
View: 7273
Waves in Oceanic and Coastal Waters describes the observation, analysis and prediction of wind-generated waves in the open ocean, in shelf seas, and in coastal regions with islands, channels, tidal flats and inlets, estuaries, fjords and lagoons. Most of this richly illustrated book is devoted to the physical aspects of waves. After introducing observation techniques for waves, both at sea and from space, the book defines the parameters that characterise waves. Using basic statistical and physical concepts, the author discusses the prediction of waves in oceanic and coastal waters, first in terms of generalised observations, and then in terms of the more theoretical framework of the spectral energy balance. He gives the results of established theories and also the direction in which research is developing. The book ends with a description of SWAN (Simulating Waves Nearshore), the preferred computer model of the engineering community for predicting waves in coastal waters.

    • Architecture

Acoustics in Moving Inhomogeneous Media


Author: Vladimir E. Ostashev,D. Keith Wilson
Publisher: CRC Press
ISBN: 1482266652
Category: Architecture
Page: 542
View: 3339
Introduces Systematic Formulations for Use in Acoustic Applications Acoustics in Moving Inhomogeneous Media, Second Edition offers a uniquely complete and rigorous study of sound propagation and scattering in moving media with deterministic and random inhomogeneities. This study is of great importance in many fields including atmospheric and oceanic acoustics, aeroacoustics, acoustics of turbulent flows, remote sensing of the atmosphere and ocean, noise pollution in the atmosphere, and wave propagation. Provides Sensible Explanations Using Step-by-Step Practice The book begins by considering sound propagation through moving media with deterministic inhomogeneities such as vertical profiles of temperature and wind velocity in the atmosphere. It moves on to a new study of sound propagation and scattering in media with random inhomogeneities in adiabatic sound speed, density, and medium velocity. Then this second edition newly sets out state-of-the-art numerical methods for calculating the sound field and its statistical characteristics in moving inhomogeneous media, which is particularly useful for those working in atmospheric acoustics and studying noise pollution. Numerical codes are provided on the book’s website www.crcpress.com/product/isbn/9780415564168 Covered in three parts, this second edition: Incorporates new results developed since the previous edition Rewrites and extends the text with formulations of sound propagation and scattering in random moving media Describes numerical methods for performing calculations involving equations from the first two parts Acoustics in Moving Inhomogeneous Media, Second Edition serves as the basis of a graduate course in atmospheric and oceanic acoustics or as a rigorous reference work in a wide range of fields such as atmospheric and oceanic acoustics, aeroacoustics, acoustics of turbulent flows, acoustic remote sensing, noise pollution, and wave propagation in deterministic and random media.

    • Technology & Engineering

Principles of Sonar Performance Modelling


Author: Michael Ainslie
Publisher: Springer Science & Business Media
ISBN: 9783540876625
Category: Technology & Engineering
Page: 707
View: 3973
Sonar performance modelling (SPM) is concerned with the prediction of quantitative measures of sonar performance, such as probability of detection. It is a multi-disciplinary subject, requiring knowledge and expertise in the disparate fields of underwater acoustics, acoustical oceanography, sonar signal processing and statistical detection theory. No books have been published on this subject, however, since the 3rd edition of Urick’s classic work 25 years ago and so Dr Ainslie’s book will fill a much-needed gap in the market. Currently, up-to-date information can only be found, in different forms and often with conflicting information, in various journals, conference and textbook publications. Dr Michael Ainslie is eminently qualified to write this unique book. He has worked on sonar performance modeling problems since 1983. He has written many peer reviewed research articles and conference papers related to sonar performance modeling, making contributions in the fields of sound propagation and detection theory.