Ambient Noise In The Sea

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Ambient Noise In The Sea

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Author : Robert J. Urick
language : en
Publisher:
Release Date : 1984

Ambient Noise In The Sea written by Robert J. Urick and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Noise categories.

Ocean Ambient Noise

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Author : William M. Carey
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-03-23

Ocean Ambient Noise written by William M. Carey 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 2011-03-23 with Science categories.

This monograph develops the theory of noise mechanisms and measurements, and describes general noise characteristics and computational methods. The vast ambient noise literature is concisely summarized using theory combined with key representative results. The air sea boundary interaction zone is described in terms of nondimensional variables requisite for future experiments. Noise field coherency, rare directional measurements, and unique basin scale computations and methods are presented. The use of satellite measurements in these basin scale models is demonstrated. A series of appendices provides in-depth mathematical treatments which will be of interest to graduate students and active researchers.

Ambient Noise In The Sea

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Author :
language : en
Publisher:
Release Date : 1984

Ambient Noise In The Sea written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with categories.

By ambient noise we mean the prevailing, sustained unwanted background of sound at some spot in the ocean. It excludes momentary, occasional sounds, such as the noise of a close-by passage of a ship or of an occasional rain squall. It is the background of noise, typical of the location and depth where a measuring hydrophone is located, against which a signal," such as the sound of a submarine or the echo from a target, must be detected. Ambient noise also excludes all forms of self-noise, such as the noise of current flow around the measurement hydrophone and its supporting structure, and obviously must exclude all forms of electrical noise. Thus, ambient noise is what is left over, so to speak, after identifiable, occasional noise sources are accounted for.

Ambient Noise In The Sea

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Author : Robert J. Urick
language : en
Publisher:
Release Date : 1984

Ambient Noise In The Sea written by Robert J. Urick and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Noise categories.

Marine Mammals And Noise

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Author : W. John Richardson
language : en
Publisher: Academic Press
Release Date : 2013-10-22

Marine Mammals And Noise written by W. John Richardson and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-22 with Science categories.

Many marine mammals communicate by emitting sounds that pass through water. Such sounds can be received across great distances and can influence the behavior of these undersea creatures. In the past few decades, the oceans have become increasingly noisy, as underwater sounds from propellers, sonars, and other human activities make it difficult for marine mammals to communicate. This book discusses, among many other topics, just how well marine mammals hear, how noisy the oceans have become, and what effects these new sounds have on marine mammals. The baseline of ambient noise, the sounds produced by machines and mammals, the sensitivity of marine mammal hearing, and the reactions of marine mammals are also examined. An essential addition to any marine biologist's library, Marine Mammals and Noise will be especially appealing to marine mammalogists, researchers, policy makers and regulators, and marine biologists and oceanographers using sound in their research.

Ambient Noise In The Sea

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Author : Robert J. Urick
language : en
Publisher:
Release Date : 1986

Ambient Noise In The Sea written by Robert J. Urick and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Science categories.

Ambient noise may be loosely said to be unwanted sound emanating from the sea itself. Its constituents typically come from a variety of somewhat diffusely combined sources: pressure changes and hydrostatic effects of tides and waves, oceanic turbulence, seismic disturbances, distant ship traffic, wind, rainfall, collapse of bubbles created by wave action, thermal agitation, marine animals and biological activity, breaking ice, and man-made noise such as distant oil rigs. Depending on locations in the ocean space, the times of day, season and year, and the happenstance of events and nature, the aforecited sources may or may not be contribute to the totality of ambient noise at any given time and place; and it may or may not exist as broad or narrow bands of energy in different regions of the frequency spectrum. More exactly defined, ambient noise is that part of the total noise background observed by an omnidirectional hydrophone in the sea which is: (1) not due to the hydrophone system's self-noise such as the noise of current flow around the measurement hydrophone and all forms of electrical noise; ambient noise is independent of the means used to observe it; and (2) not due to other identifiable localized sources of noise. Ambient noise is what is "left over" after all identifiable noise sources are accounted for. Ambient noise is an especially important consideration in detecting and identifying targets - be the targets submarines, underwater vehicles, floating mines, or fish-- in relatively quiet ocean environments and situations. In the case of active sonar, ambient noise typically becomes the dominant background against which the sonar receiver is trying to detect, and possibly identify, targets in the ocean space (not addressing search of the ocean floor) when it is greater than self noise and after the relatively loud reverberation noise created by the active sonar pings has died down in the sonar cycle. In the case of passive sonar, after taking into account self noise and possible extraneous noise from identifiable sources, ambient noise is the background against which the sonar receiver seeks to detect and identify targets. This book, AMBIENT NOISE IN THE SEA by Robert Urick, summarizes the main features of the ambient noise and gives the reader an easy to read, understandable entry in to its unclassified literature. This book is a must for engineers in the fields of active and passive sonars, underwater sensor and weapons systems, and underwater signal processing.

Seismic Ambient Noise

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Author : Nori Nakata
language : en
Publisher: Cambridge University Press
Release Date : 2019-03-21

Seismic Ambient Noise written by Nori Nakata and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-03-21 with Nature categories.

A comprehensive overview of seismic ambient noise, covering observations, physical origins, modelling, processing methods and applications in imaging and monitoring.

Mechanics Of Underwater Noise

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Author : Donald Ross
language : en
Publisher: Elsevier
Release Date : 2013-10-22

Mechanics Of Underwater Noise written by Donald Ross and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-22 with Science categories.

Mechanics of Underwater Noise elucidates the basic mechanisms by which noise is generated, transmitted by structures and radiated into the sea. Organized into 10 chapters, this book begins with a description of noise, decibels and levels, significance of spectra, and passive sonar equation. Subsequent chapters discuss sound waves in liquids; acoustic radiation fundamentals; wind-generated ocean ambient noise; vibration isolation and structural damping; and radiation by plate flexural vibrations. Other chapters address cavitation, propeller cavitation noise, radiation by fluctuating-force (dipole) sources, and mechanical noise sources. This book will be helpful as a self-education text and as a reference for workers in the field.

Ocean Of Sound

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Author : David Toop
language : en
Publisher:
Release Date : 1995

Ocean Of Sound written by David Toop and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with History categories.

"Ocean of Sound" begins in 1889 at the Paris Exposition when Debussy first heard Javanese music performed. A culture absorbed in perfume, light and ambient sound developed in response to the intangibility of 20th century communications. David Toop traces the evolution of this culture, through Erik Satie to the Velvet Undergound; Miles Davis to Jimi Hendrix. David Toop, who lives in London, is a writer, musician and recording artist. His other books are "Rap Attack 3 "and "Exotica,"

Theoretical And Computational Acoustics 2001

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Author : Er-Chang Shang
language : en
Publisher: World Scientific
Release Date : 2002

Theoretical And Computational Acoustics 2001 written by Er-Chang Shang and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Science categories.

This book contains 67 papers presented at ICTCA2001. It includes three keynote addresses surveying the frontier developments in computational and theoretical acoustics. The papers cover aero-, seismo- and ocean acoustics, as well as ultrasonics. Computational methods, numerical simulation, theoretical analysis and experimental results are emphasized by different papers.The proceedings have been selected for coverage in: Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)