Author : Jason David Holmes
Publisher :
Page : 630 pages
File Size : 30,62 MB
Release : 2007
Category : Marine sediments
ISBN :
Author : Acoustical Society of America
Publisher :
Page : 988 pages
File Size : 20,31 MB
Release : 2006
Category : Acoustical engineering
ISBN :
Author : William A. Kuperman
Publisher : Springer Science & Business Media
Page : 700 pages
File Size : 16,71 MB
Release : 2013-03-13
Category : Science
ISBN : 1468490516
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.
Author :
Publisher :
Page : 846 pages
File Size : 12,83 MB
Release : 2006
Category : Dissertations, Academic
ISBN :
Author : Lisheng Zhou
Publisher : Springer
Page : 126 pages
File Size : 11,63 MB
Release : 2016-10-17
Category : Science
ISBN : 9811024227
These proceedings are a collection of 16 selected scientific papers and reviews by distinguished international experts that were presented at the 4th Pacific Rim Underwater Acoustics Conference (PRUAC), held in Hangzhou, China in October 2013. The topics discussed at the conference include internal wave observation and prediction; environmental uncertainty and coupling to sound propagation; environmental noise and ocean dynamics; dynamic modeling in acoustic fields; acoustic tomography and ocean parameter estimation; time reversal and matched field processing; underwater acoustic localization and communication as well as measurement instrumentations and platforms. These proceedings provide insights into the latest developments in underwater acoustics, promoting the exchange of ideas for the benefit of future research.
Author : Andrea Caiti
Publisher : Springer
Page : 332 pages
File Size : 25,30 MB
Release : 2017-04-30
Category : Science
ISBN : 9789402404616
Thisvolume contains thecollection of papers from the second workshop on Expe- mental Acoustic Inversion Techniques for Exploration of theShallow Water Environment. Theworkshopthemefollowedtheoriginalconceptofthe rstworkshop, heldinCarvoeiro, Portugal, in 1999, i.e., to focus on experiments and experimental techniques for acoustic sensing in the shallow ocean. More than forty leading international scientists were invited to meet in the picturesque town of St. Angelo on the island of Ischia, in June 2004, to discuss progress in the application of new experimental techniques for exploration and assessment of shallowwater environments. Acoustic techniques provide the most effective means for remote sensing of ocean and sea oor processes, and for probing the structure beneath the sea oor. No other energy propagates as ef ciently in the ocean: radio waves and visible light are severely limited in range because the ocean is a highly conductive medium. However, sound from bre- ing waves and coastal shipping can be heard throughout the ocean, and marine mammals communicate acoustically over basin scale distances.
Author : Norman Bleistein
Publisher : Springer
Page : 308 pages
File Size : 41,38 MB
Release : 1979
Category : Science
ISBN :
This Topics volume is devoted to a study of sound propagation in the ocean. The effect of the interior of the ocean on underwater sound is analogous to the effect of a lens on light. The oceanic lens is related, as in light propagation, to the index of refraction of the medium. The latter is giṽn by the ratio of the sound frequency to the speed of sound in water, typi ca lly about 1500 m s -1. It is the vari ation of the sound speed due to changing temperature, density, salinity, and pres sure in the complex ocean environment which creates the lens effect. Many oceanic processes such as currents, tides, eddies (circulating, translating regions of wa ter), and internal waves (the wave-like structure of the oceanic density variabil ity) contri bute in turn to the changes in sound speed'. The net effect of the ocean lens is to trap and guide sound waves in a channel created by the lens. The trapped sound can then propagate thousands of miles in this oceanic waveguide. In addition to the propagation in the interior of the ocean, sound can propagate into and back out of the ocean bottom as well as scatter from the ocean surface. Just as the sound produced by a loudspeaker in a room is affected by the walls of the room, so the ocean boundaries and the material properties below the ocean bottom are essential ingredients in the problem.
Author : Ji-Xun Zhou
Publisher : American Institute of Physics
Page : 0 pages
File Size : 11,7 MB
Release : 2012-12-17
Category : Science
ISBN : 9780735411074
Undersea acoustic applications to detect, communicate, navigate, monitor and measure within the ocean, are dependent upon a good physical understanding of sound production, propagation, and scattering in the ocean environment. This proceedings volume provides interesting new research results in ocean acoustics and includes two-to-three decade reviews of progress in different topics in ocean acoustics, including computational acoustics, shallow-water acoustics, seafloor and sediment acoustics, boundary scattering and reverberation, ocean ambient noise, geoacoustic inversion, marine bioacoustics, arctic acoustics, signal processing, underwater acoustic communication, and underwater sound projectors.
Author : Thomas Rossing
Publisher : Springer Science & Business Media
Page : 1179 pages
File Size : 22,30 MB
Release : 2007-06-21
Category : Science
ISBN : 0387304460
This is an unparalleled modern handbook reflecting the richly interdisciplinary nature of acoustics edited by an acknowledged master in the field. The handbook reviews the most important areas of the subject, with emphasis on current research. The authors of the various chapters are all experts in their fields. Each chapter is richly illustrated with figures and tables. The latest research and applications are incorporated throughout, including computer recognition and synthesis of speech, physiological acoustics, diagnostic imaging and therapeutic applications and acoustical oceanography. An accompanying CD-ROM contains audio and video files.
Author : Anatoly Kistovich
Publisher :
Page : 171 pages
File Size : 10,48 MB
Release : 2020
Category : Underwater acoustics
ISBN : 9783030358853
This book presents a comprehensive overview of hydroacoustics and describes the physical basis of acoustic processes observed in the sea. In addition, it discusses the basic concepts and provides simplified models of sound propagation and acoustic phenomena at the boundary between environments. Lastly, the book examines in detail a number of applications of ocean acoustics and methods. The ocean is the last reserve of natural resources. It is also an essential element in the biosphere, ensuring the latters balance, and plays a pivotal role in the Earths climate system and global warming. Consequently, studying the ocean is one of humankinds most critical scientific tasks, but penetrating its mysteries is no mean feat. Acoustics (hydroacoustics) is one of the most powerful tools for examining the water layer and beyond, since sound waves are the only type of radiation that can propagate over distances of hundreds and even thousands of kilometers in the ocean. This unique resource appeals to specialists working in the fields of ocean and atmosphere physics, students and postgraduate students studying sea physics and oceanology, and anyone who is interested in the problems the ocean is currently facing.
