Acoustic Relaxation In Unconsolidated Marine Sediments
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Acoustic Relaxation In Unconsolidated Marine Sediments
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Author : L. R. B. Duykers
language : en
Publisher:
Release Date : 1971
Acoustic Relaxation In Unconsolidated Marine Sediments written by L. R. B. Duykers and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Marine sediments categories.
Acoustic relaxation theory for visco-elastic media provides for sound propagation in unconsolidated marine sediments. For the frequency range of 14 to 200 kHz, dispersion for compressional-wave and shear-wave velocity is negligible for all practical purposes, but sound absorption shows significant changes. (Author).
In Situ Measurements Of Acoustic Absorption In Unconsolidated Marine Sediments
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Author : Lee C. Bennett (Jr)
language : en
Publisher:
Release Date : 1966
In Situ Measurements Of Acoustic Absorption In Unconsolidated Marine Sediments written by Lee C. Bennett (Jr) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Elastic waves categories.
Physics Of Sound In Marine Sediments
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Author : Lloyd Hampton
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-09
Physics Of Sound In Marine Sediments written by Lloyd Hampton 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.
The phenomenon of sound transmissions through marine sediments is of extreme interest to both the United States civilian and Navy research communities. Both communities have conducted research within the field of this phenomenon approaching it from different perspectives. The academic research community has approached it as a technique for studying sedimentary and crustal structures of the ocean basins. The Navy research community has approached it as an additional variable in the predictability of sound trans mission through oceanic waters. In order to join these diverse talents, with the principal aim of bringing into sharp focus the state-of-the-science in the problems relating to the behavior of sound in marine sediments, the Office of Naval Research organized and sponsored an invited symposium on this subject. The papers published in this volume are the results of this symposium and mark the frontiers in the state-of-the-art. The symposia series were based on five research areas identified by ONR as being particularly suitable for critical review and for the appraisal of future research trends. These areas include: 1. Physics of Sound in Marine Sediments, 2. Physical and Engineering Properties of Deep-Sea Sediments, 3. The Role of Bottom Currents in Sea Floor Geological Processes, 4. Nephelometry and the Optical Properties of the Ocean I'laters, S. Natural Gases in Marine Sediments and Their Mode of Distribution. These five areas also form some of the research priorities of the ONR program in Marine Geology and Geophysics.
Acoustics Of The Seabed As A Poroelastic Medium
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Author : Nicholas P. Chotiros
language : en
Publisher: Springer
Release Date : 2017-03-20
Acoustics Of The Seabed As A Poroelastic Medium written by Nicholas P. Chotiros and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-03-20 with Science categories.
This book presents a concise description of the acoustics of ocean sediment acoustics, including the latest developments that address the discrepancies between theoretical models and experimental measurements. This work should be of interest to ocean acoustic engineers and physicists, as well as graduate students and course instructors. The seabed is neither a liquid nor a solid, but a fluid saturated porous material that obeys the wave equations of a poroelastic medium, which are significantly more complicated than the equations of either a liquid or a solid. This volume presents a model of seabed acoustics with input parameters that allow the model to cover a wide range of sediment types. The author includes example reflection and transmission curves which may be used as typical for a range of sediment types. The contents of this book will allow the reader to understand the physical processes involved in the reflection, propagation, and attenuation of sound and shear waves in ocean sediments and to model the acoustic properties for a wide range of applications.
Acoustic Sounding Of Quaternary Marine Sediments Off Point Loma California
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Author : D. G Moore
language : en
Publisher:
Release Date : 1957
Acoustic Sounding Of Quaternary Marine Sediments Off Point Loma California written by D. G Moore and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1957 with Sedimentation and deposition categories.
Acoustic And Related Properties Of The Sea Floor
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Author : Edwin Lee Hamilton
language : en
Publisher:
Release Date : 1975
Acoustic And Related Properties Of The Sea Floor written by Edwin Lee Hamilton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Marine sediments categories.
The general objectives of this investigation were to determine and study those characteristics of the sea floor that affect sound propagation and the prediction of sonar performance; to support underwater acoustics' experiments and theory by furnishing information on the mass physical properties of sediments and rocks in the form of geoacoustic models of the sea floor; and to develop models of the sea floor which include gradients of sound velocity and attenuation, density, and elastic properties. Specifically, the minor objectives were to revise and review earlier work on the relations between frequency and attenuation of compressional (sound) waves in marine sediments and on the relations between attenuation and sediment porosity. The major objectives were to determine and predict variations of the attenuation of sound waves with depth in the sea floor.
Acoustic Properties Of Marine Sediments
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Author : James Donald Bennell
language : en
Publisher:
Release Date : 1979
Acoustic Properties Of Marine Sediments written by James Donald Bennell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with categories.
Bottom Interacting Ocean Acoustics
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Author : William A. Kuperman
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-13
Bottom Interacting Ocean Acoustics written by William A. Kuperman 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 2013-03-13 with Science categories.
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.
Sediment Acoustics
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Author : Robert D. Stoll
language : en
Publisher: Peninsula Publishing
Release Date : 2016-09-14
Sediment Acoustics written by Robert D. Stoll and has been published by Peninsula Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-09-14 with Science categories.
Sediment Acoustics is Dr. Robert D. Stoll's seminal book addressing Biot Theory for the modeling of acoustic behavior of ocean sediments. The book is written for seismic-acousticians in the geo-exploration, engineering, oceanographic and underwater sound communities. Robert Stoll, a respected leader in marine geoacoustics for more than forty years, added a brief preface and selected bibliography to this 2006 second printing of his book, first published in 1989. Sediment Acoustics provides an excellent introduction to Biot Theory, the physics underlying the model parameters, and the experimentally measurable predictions of theory. The book constitutes a major synthesis for non-specialists: the results of laboratory, in-situ and numerical modeling studies of seismic-acoustic wave propagation, reflection and attenuation in two-phase poro-visco-elastic media. The text draws from Dr. Stoll's then-20+ year study of shallow subsea porosity and permeability and their effects on seismic-acoustics over the 5-1500 Hz band and has much to offer those interested in better understanding of the Biot model. It is written at the graduate literature review level but includes enough tutorial sections and references to be useful as a text for new researchers in seismic modeling, quantitative seismic stratigraphy, offshore marine geotechnique, underwater acoustics and sonar, and ground-interacting aeroacoustics.
Investigation Of The Acoustics Of Marine Sediments Using An Impedance Tube And Continued Investigation Of The Acoustics Of Marine Sediments Using Impedance Tube And Acoustic Resonator Techniques
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Author :
language : en
Publisher:
Release Date : 2010
Investigation Of The Acoustics Of Marine Sediments Using An Impedance Tube And Continued Investigation Of The Acoustics Of Marine Sediments Using Impedance Tube And Acoustic Resonator Techniques written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
The primary purpose of this work was to conduct laboratory and field studies of the acoustics of sandy ocean bottom sediments, with sufficient control of experimental uncertainly to make meaningful comparisons to existing and developing models. The work began with a focus on low frequencies, below the Biot transition frequency, but expanded in frequency range to cover frequencies above the Biot transition frequency. Initially, the work was focused on sandy sediments, but additional multiphase ocean-bottom materials were eventually studied, too, including gas-bearing sediments and seagrass. The work was initially focused on laboratory measurements, but expanded to include work during the large-scale, ONR-sponsored at-sea experiment Shallow Water '06. Results of a large number of associated laboratory and field measurements are presented along with model comparisons, for the various ocean bottom materials mentioned above.