High Frequency Ocean Acoustics

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High Frequency Ocean Acoustics

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Author : Michael B. Porter
language : en
Publisher: American Institute of Physics
Release Date : 2004-12-07

High Frequency Ocean Acoustics written by Michael B. Porter and has been published by American Institute of Physics this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-12-07 with Nature categories.

All papers were peer-reviewed. Sound in the ocean is as fundamental as light in theatmosphere. The high-frequency acoustic band has been little studied in the past; however, new applications such as mine hunting, marine mammal tracking, and communications (the undersea internet) have generated tremendous interest. These peer-reviewed proceedings include 8 invited papers by leading experts in particular areas and collectively survey all aspects of current research in high-frequency acoustics.

High Frequency Seafloor Acoustics

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Author : Darrell Jackson
language : en
Publisher: Springer Science & Business Media
Release Date : 2007-08-02

High Frequency Seafloor Acoustics written by Darrell Jackson and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-08-02 with Science categories.

The efficacy of sound to penetrate the seas made acoustic systems in the past century the leading tools for sensing objects in and measuring properties of the seas. For over sixty years The United States Office of Naval Research (ONR) has been a major sponsor of undersea research and development at universities, national laboratories, and industrial organizations. App- priately ONR is the sponsor of this monograph series. The intent of the series is to summarize recent accomplishments in, and to outline perspectives for, underwater acoustics in specific fields of research. The general field has escalated in importance and spread broadly with ri- ness and depth of understanding. It has also, quite naturally, become more specialized. The goal of this series is to present monographs that critically review both past and recent accomplishments in order to address the sho- comings in present understanding. In this way, these works will bridge the gaps in understanding among the specialists and favorably color the direction of new research and development. Each monograph is intended to be a stand-alone advanced contribution to the field. We trust that the reader will also find that each is a critical introduction to related specialized topics of interest as well.

Bl Lac Objects

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Author : Laura Maraschi
language : en
Publisher: Springer Verlag
Release Date : 1989

Bl Lac Objects written by Laura Maraschi and has been published by Springer Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Science categories.

Ocean Seismo Acoustics

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Author : T. Akal
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-09

Ocean Seismo Acoustics written by T. Akal and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-09 with Science categories.

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.

Ocean Acoustics

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Author : Ivan Tolstoy
language : en
Publisher:
Release Date : 1987

Ocean Acoustics written by Ivan Tolstoy and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Science categories.

Acoustic High Frequency Diffraction Theory

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Author : Frédéric Molinet
language : en
Publisher: Momentum Press
Release Date : 2011-05-15

Acoustic High Frequency Diffraction Theory written by Frédéric Molinet and has been published by Momentum Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-05-15 with Technology & Engineering categories.

Covering analytical research in aerial and underwater acoustics, this new scholarly work treats the interaction of acoustic waves with obstacles which may be rigid, soft, elastic, or characterized by an impedance boundary condition. The approach is founded on asymptotic high frequency methods which are based on the concept of rays. For despite the progress in numerical methods for diffraction problems, ray methods still remain the most useful method of approximation for analyzing wave motions. They provide not only considerable physical insight and understanding of diffraction mechanisms but they are also able to treat objects which are still too large in terms of wavelength to fall in the realm of numerical analysis.

Oceanography And Acoustics

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Author : Allan R. Robinson
language : en
Publisher: American Institute of Physics
Release Date : 1994

Oceanography And Acoustics written by Allan R. Robinson and has been published by American Institute of Physics this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Science categories.

Market: Ocean dynamicists and acousticians. "Useful to scientists or students interested in ocean dynamical modelling, acoustic propagation modelling, and particularly to those interested in the union of these fields (which is likely to be become increasingly important)." Revue de livre With complete chapters contributed by leading authorities, this work offers a comprehensive overview of current combined research in acoustics and oceanography. Following an introduction on ocean variability, acoustic propagation, and coupled models, subsequent chapters present up-to-date coverage of the developing relationship between ocean science and ocean acoustics, including an extensive review of state-of-the-art three-dimensional models.

The Journal Of The Acoustical Society Of America

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Author : Acoustical Society of America
language : en
Publisher:
Release Date : 2007

The Journal Of The Acoustical Society Of America written by Acoustical Society of America and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Acoustical engineering categories.

Underwater Acoustics

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Author : Vernon M. Albers
language : en
Publisher:
Release Date : 1963

Underwater Acoustics written by Vernon M. Albers and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with Underwater acoustics categories.

Nonlinear Underwater Acoustics

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Author : Boris Konstantinovich Novikov
language : en
Publisher: Acoustical Society of America
Release Date : 1987

Nonlinear Underwater Acoustics written by Boris Konstantinovich Novikov and has been published by Acoustical Society of America this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Science categories.

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.