Bottom-Interacting Ocean Acoustics

Bottom-Interacting Ocean Acoustics

Author: William A. Kuperman

Publisher: Springer Science & Business Media

Published: 2013-03-13

Total Pages: 700

ISBN-13: 1468490516

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vi These categories seem to represent the basic breakdown by field of present-day research in this area. Though each paper has been classified into one of these categories (for conference organization purpose), many papers overlapped two or three areas. It is also interesting to note that not only are scientific results being communicated, but the latest techniques and the state-of-the-art tools of the trade (existing and in development) are also being presented. The forty-six papers presented at this conference represent the work of seventy scientists working at universities, government laboratories, and industrial laboratories in seven different countries . We would like to thank the contributors for their efforts and especially for their promptness in providing the editors with their final manuscripts. William A. Kuperman Finn B. Jensen La Spezia, Italy July 1980 CONTENTS GEOACOUSTIC PROPERTIES OF MARINE SEDIMENTS Attenuation of Sound in Marine Sediments . • 1 J. M. Hovem Directivity and Radiation Impedance of a Transducer 15 Embedded in a Lossy Medium . •• •••••• G. H. Ziehm Elastic Properties Related to Depth of Burial, Strontium Content and Age, and Diagenetic Stage in Pelagic Carbonate Sediments . . • • . • • • . 41 M. H. Manghnani, S. O. Schianger, and P. D. Milholland Application of Geophysical Methods 'and Equipment to Explore the Sea Bottom . •• •••. • 53 H. F. Weichart The Acoustic Response of Some Gas-Charged Sediments in the Northern Adriatic Sea • • • • . • • • • 73 A.


Book Synopsis Bottom-Interacting Ocean Acoustics by : William A. Kuperman

Download or read book Bottom-Interacting Ocean Acoustics written by William A. Kuperman and published by Springer Science & Business Media. This book was released on 2013-03-13 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: vi These categories seem to represent the basic breakdown by field of present-day research in this area. Though each paper has been classified into one of these categories (for conference organization purpose), many papers overlapped two or three areas. It is also interesting to note that not only are scientific results being communicated, but the latest techniques and the state-of-the-art tools of the trade (existing and in development) are also being presented. The forty-six papers presented at this conference represent the work of seventy scientists working at universities, government laboratories, and industrial laboratories in seven different countries . We would like to thank the contributors for their efforts and especially for their promptness in providing the editors with their final manuscripts. William A. Kuperman Finn B. Jensen La Spezia, Italy July 1980 CONTENTS GEOACOUSTIC PROPERTIES OF MARINE SEDIMENTS Attenuation of Sound in Marine Sediments . • 1 J. M. Hovem Directivity and Radiation Impedance of a Transducer 15 Embedded in a Lossy Medium . •• •••••• G. H. Ziehm Elastic Properties Related to Depth of Burial, Strontium Content and Age, and Diagenetic Stage in Pelagic Carbonate Sediments . . • • . • • • . 41 M. H. Manghnani, S. O. Schianger, and P. D. Milholland Application of Geophysical Methods 'and Equipment to Explore the Sea Bottom . •• •••. • 53 H. F. Weichart The Acoustic Response of Some Gas-Charged Sediments in the Northern Adriatic Sea • • • • . • • • • 73 A.

Bottom-Interacting Ocean Acoustics

Bottom-Interacting Ocean Acoustics

Author: William A Kuperman

Publisher:

Published: 1981-03-01

Total Pages: 732

ISBN-13: 9781468490527

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Book Synopsis Bottom-Interacting Ocean Acoustics by : William A Kuperman

Download or read book Bottom-Interacting Ocean Acoustics written by William A Kuperman and published by . This book was released on 1981-03-01 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Bottom-interacting Ocean Acoustics

Bottom-interacting Ocean Acoustics

Author: Finn V. Jensen

Publisher:

Published: 1980

Total Pages:

ISBN-13:

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Book Synopsis Bottom-interacting Ocean Acoustics by : Finn V. Jensen

Download or read book Bottom-interacting Ocean Acoustics written by Finn V. Jensen and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Acoustic Interactions With Submerged Elastic Structures - Part Ii: Propagation, Ocean Acoustics And Scattering

Acoustic Interactions With Submerged Elastic Structures - Part Ii: Propagation, Ocean Acoustics And Scattering

Author: Juri Engelbrecht

Publisher: World Scientific

Published: 2001-07-31

Total Pages: 389

ISBN-13: 9814497827

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The interaction of acoustic fields with submerged elastic structures, both by propagation and scattering, is being investigated at various institutions and laboratories world-wide with ever-increasing sophistication of experiments and analysis. This book offers a collection of contributions from these research centers that represent the present state-of-the-art in the study of acoustic elastic interaction, being on the cutting edge of these investigations. This includes the description of acoustic scattering from submerged elastic objects and shells by the Resonance Scattering Theory of Flax, Dragonette and Überall, and the interaction of these phenomena in terms of interface waves. It also includes the use of this theory for the purpose of inverse scattering, i.e. the determination of the scattered objects properties from the received acoustic backscattered signals. The problem of acoustically excited waves in inhomogeneous and anisotropic materials, and of inhomogeneous propagating waves is considered. Vibrations and resonances of elastic shells, including shells with various kinds of internal attachments, are analyzed. Acoustic scattering experiments are described in the time domain, and on the basis of the Wigner-Ville distribution. Acoustic propagation in the water column over elastic boundaries is studied experimentally both in laboratory tanks, and in the field, and is analyzed theoretically. Ultrasonic nondestructive testing, including such aspects like probe modelling, scattering by various types of cracks, receiving probes and calibration by a side-drilled hole is also studied in details.A comprehensive picture of these complex phenomena and other aspects is presented in the book by researchers that are experts in each of these domains, giving up-to-date accounts of the field in all these aspects.


Book Synopsis Acoustic Interactions With Submerged Elastic Structures - Part Ii: Propagation, Ocean Acoustics And Scattering by : Juri Engelbrecht

Download or read book Acoustic Interactions With Submerged Elastic Structures - Part Ii: Propagation, Ocean Acoustics And Scattering written by Juri Engelbrecht and published by World Scientific. This book was released on 2001-07-31 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: The interaction of acoustic fields with submerged elastic structures, both by propagation and scattering, is being investigated at various institutions and laboratories world-wide with ever-increasing sophistication of experiments and analysis. This book offers a collection of contributions from these research centers that represent the present state-of-the-art in the study of acoustic elastic interaction, being on the cutting edge of these investigations. This includes the description of acoustic scattering from submerged elastic objects and shells by the Resonance Scattering Theory of Flax, Dragonette and Überall, and the interaction of these phenomena in terms of interface waves. It also includes the use of this theory for the purpose of inverse scattering, i.e. the determination of the scattered objects properties from the received acoustic backscattered signals. The problem of acoustically excited waves in inhomogeneous and anisotropic materials, and of inhomogeneous propagating waves is considered. Vibrations and resonances of elastic shells, including shells with various kinds of internal attachments, are analyzed. Acoustic scattering experiments are described in the time domain, and on the basis of the Wigner-Ville distribution. Acoustic propagation in the water column over elastic boundaries is studied experimentally both in laboratory tanks, and in the field, and is analyzed theoretically. Ultrasonic nondestructive testing, including such aspects like probe modelling, scattering by various types of cracks, receiving probes and calibration by a side-drilled hole is also studied in details.A comprehensive picture of these complex phenomena and other aspects is presented in the book by researchers that are experts in each of these domains, giving up-to-date accounts of the field in all these aspects.

Acoustic Interactions with Submerged Elastic Structures

Acoustic Interactions with Submerged Elastic Structures

Author: Ard‚shir Guran

Publisher: World Scientific

Published: 2001

Total Pages: 443

ISBN-13: 9812810757

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"\berall's work in acoustic and electromagnetic scattering has evoked much interest, in the US as well as abroad, because of its possible practical applications, as well as the theoretical understanding. Many collaborators have been inspired by it, and have now contributed to this volume. The book is an excellent contribution to the literature of Acoustics and Wave Propagation. Professor Guran is to be congratulated for organizing and editing this volume." Prof. Hans A Bethe Noble Laureate Cornell University, 1996


Book Synopsis Acoustic Interactions with Submerged Elastic Structures by : Ard‚shir Guran

Download or read book Acoustic Interactions with Submerged Elastic Structures written by Ard‚shir Guran and published by World Scientific. This book was released on 2001 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: "\berall's work in acoustic and electromagnetic scattering has evoked much interest, in the US as well as abroad, because of its possible practical applications, as well as the theoretical understanding. Many collaborators have been inspired by it, and have now contributed to this volume. The book is an excellent contribution to the literature of Acoustics and Wave Propagation. Professor Guran is to be congratulated for organizing and editing this volume." Prof. Hans A Bethe Noble Laureate Cornell University, 1996

Ocean Seismo-Acoustics

Ocean Seismo-Acoustics

Author: T. Akal

Publisher: Springer Science & Business Media

Published: 2013-03-09

Total Pages: 898

ISBN-13: 1461322014

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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.


Book Synopsis Ocean Seismo-Acoustics by : T. Akal

Download or read book Ocean Seismo-Acoustics written by T. Akal and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Computational Ocean Acoustics

Computational Ocean Acoustics

Author: Finn B. Jensen

Publisher: Springer Science & Business Media

Published: 2000-03-23

Total Pages: 620

ISBN-13: 9781563962097

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"Many practical suggestions and tips; the examples are meaningful and the illustrations are effective....Destined to become a classic reference that any serious practitioner of ocean acoustics cannot afford to ignore." Revue de livre Authored by four internationally renowned scientists, this volume covers 20 years of progress in computational ocean acoustics and presents the latest numerical techniques used in solving the wave equation in heterogeneous fluid-solid media. The authors detail various computational schemes and illustrate many of the fundamental propagation features via 2-D color displays.


Book Synopsis Computational Ocean Acoustics by : Finn B. Jensen

Download or read book Computational Ocean Acoustics written by Finn B. Jensen and published by Springer Science & Business Media. This book was released on 2000-03-23 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Many practical suggestions and tips; the examples are meaningful and the illustrations are effective....Destined to become a classic reference that any serious practitioner of ocean acoustics cannot afford to ignore." Revue de livre Authored by four internationally renowned scientists, this volume covers 20 years of progress in computational ocean acoustics and presents the latest numerical techniques used in solving the wave equation in heterogeneous fluid-solid media. The authors detail various computational schemes and illustrate many of the fundamental propagation features via 2-D color displays.

An Investigation of Acoustic Interaction with the Ocean Bottom from Experimental Time Series Generated by Explosive Sources

An Investigation of Acoustic Interaction with the Ocean Bottom from Experimental Time Series Generated by Explosive Sources

Author: David Paul Knobles

Publisher:

Published: 1983

Total Pages: 106

ISBN-13:

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Received time series from explosive sources in an abyssal plains ocean environment are compared to simulated time series calculated by a ray theory model. The comparisons yield information concerning the geoacoustic profile with a single sediment layer. The comparisons are made in various frequency bands to aid in identifying sediment penetrating arrivals by taking advantage of the frequency dependence of the absorption of the sediment. For shorter ranges, the sediment penetrating rays reflect off the basement. Also, as the range decreases, the fraction of received energy due to reflections at the water-sediment interface increases. Discrepancies between the experimental and simulated time series are interpreted in terms of reflections from thin layers within the sediment and scattered basement reflections


Book Synopsis An Investigation of Acoustic Interaction with the Ocean Bottom from Experimental Time Series Generated by Explosive Sources by : David Paul Knobles

Download or read book An Investigation of Acoustic Interaction with the Ocean Bottom from Experimental Time Series Generated by Explosive Sources written by David Paul Knobles and published by . This book was released on 1983 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Received time series from explosive sources in an abyssal plains ocean environment are compared to simulated time series calculated by a ray theory model. The comparisons yield information concerning the geoacoustic profile with a single sediment layer. The comparisons are made in various frequency bands to aid in identifying sediment penetrating arrivals by taking advantage of the frequency dependence of the absorption of the sediment. For shorter ranges, the sediment penetrating rays reflect off the basement. Also, as the range decreases, the fraction of received energy due to reflections at the water-sediment interface increases. Discrepancies between the experimental and simulated time series are interpreted in terms of reflections from thin layers within the sediment and scattered basement reflections

Ocean Acoustics Program

Ocean Acoustics Program

Author: J. Michael McKisic

Publisher:

Published: 1981

Total Pages: 108

ISBN-13:

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Book Synopsis Ocean Acoustics Program by : J. Michael McKisic

Download or read book Ocean Acoustics Program written by J. Michael McKisic and published by . This book was released on 1981 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

European Conference on Underwater Acoustics

European Conference on Underwater Acoustics

Author: M. Weydert

Publisher: CRC Press

Published: 2004-01-14

Total Pages: 786

ISBN-13: 1482286858

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This book represents the proceedings of the Conference on Underwater Acoustics, held in September 1992, to bring together all the various disciplines involved in a forum to present the latest research on all aspects of marine acoustics.


Book Synopsis European Conference on Underwater Acoustics by : M. Weydert

Download or read book European Conference on Underwater Acoustics written by M. Weydert and published by CRC Press. This book was released on 2004-01-14 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book represents the proceedings of the Conference on Underwater Acoustics, held in September 1992, to bring together all the various disciplines involved in a forum to present the latest research on all aspects of marine acoustics.