Ocean Seismo Acoustics
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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 Seismo Acoustics
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Author : T. Akal
language : en
Publisher:
Release Date : 1986-07-31
Ocean Seismo Acoustics written by T. Akal and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986-07-31 with categories.
Full Field Inversion Methods In Ocean And Seismo Acoustics
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Author : Orest Diachok
language : en
Publisher: Springer Science & Business Media
Release Date : 1995-05-31
Full Field Inversion Methods In Ocean And Seismo Acoustics written by Orest Diachok 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 1995-05-31 with Technology & Engineering categories.
Recent advances in the power of inversion methods, the accuracy of acoustic field prediction codes, and the speed of digital computers have made the full field inversion of ocean and seismic parameters on a large scale a practical possibility. These methods exploit amplitude and phase information detected on hydrophone/geophone arrays, thereby extending traditional inversion schemes based on time of flight measurements. Full field inversion methods provide environmental information by minimising the mismatch between measured and predicted acoustic fields through a global search of possible environmental parameters. Full Field Inversion Methods in Ocean and Seismo-Acoustics is the formal record of a conference held in Italy in June 1994, sponsored by NATO SACLANT Undersea Research Centre. It includes papers by NATO specialists and others. Topics covered include: · speed and accuracy of acoustic field prediction codes · signal processing strategies · global inversion algorithms · search spaces of environmental parameters · environmental stochastic limitations · special purpose computer architectures · measurement geometries · source and receiving sensor technologies.
Computational Acoustics Seismo Ocean Acoustics And Modeling
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Author : Ding Lee
language : en
Publisher: Elsevier Science & Technology
Release Date : 1990
Computational Acoustics Seismo Ocean Acoustics And Modeling written by Ding Lee and has been published by Elsevier Science & Technology this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Mathematics categories.
This 3-volume set contains contributions from different areas of Computational Acoustics. Covered are: - computational methods to solve acoustics problems (including aero-acoustics, seismo-acoustics, and ocean-acoustics) and, in general, wave propagation problems - computational aspects of the interface between aero-, seismo- and ocean-acoustics - new solution techniques that have been made possible with the advent of new computer architectures such as parallel computers, super (pipeline) computers, hypercubes, etc.
Ulf Vlf Ocean Bottom Seismo Acoustics
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Author :
language : en
Publisher:
Release Date : 1990
Ulf Vlf Ocean Bottom Seismo Acoustics written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.
The original research under this contract was directed toward comparison of ocean bottom seismometer and hydrophone data with ocean sub-bottom seismometer data and with appropriate synthetics to determine the effect of sub-bottom structure on the signals received; expected propagation loss; predominant modes of propagation; instrument signal distortion and excess noise; expected spacial coherence; and expected improvement from polarization and array processing. During the first and subsequent years of the contract, research emphasis was re-directed toward analysis interpretation of data from the Columbia-Point Arena ocean bottom seismic station (OBSS) emphasizing the objectives of the ONR Accelerated Research Initiative in ULF/VLF Ocean Seismo-Acoustics.
Acoustics And Ocean Bottom
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Author : A. Lara-Sáenz
language : en
Publisher:
Release Date : 1987
Acoustics And Ocean Bottom written by A. Lara-Sáenz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Hearing categories.
Selected Papers On Ocean Seismo Acoustics Low Frequency Underwater Acoustics Based On The Saclantcen Contributions To A Symposium Held By Saclantcen On 10 14 June 1985
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Author :
language : en
Publisher:
Release Date : 1986
Selected Papers On Ocean Seismo Acoustics Low Frequency Underwater Acoustics Based On The Saclantcen Contributions To A Symposium Held By Saclantcen On 10 14 June 1985 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with categories.
CONTENTS: Time dependence of infrasonic ambient seafloor noise on a continental shelf; The use of Love waves to determine the geoacoustic properties of marine sediments; Medium induced low frequency fluctuations in acoustic transmission loss; Directional measurements of low frequency acoustic backscattering from the seafloor; Shear properties of ocean sediments determined from numerical modelling of Scholte wave data; Evaluation of low frequency bottom backscattering strength vs grazing angle by means of multiple beamforming; Spatial variability of surficial shallow water sediment geoacoustic properties; Evaluation of experimental techniques for determining the plane wave reflection coefficient at the sea floor; Interface wave studies on the Ligurian shelf using an OBS array: experimental results and propagation models; and Low frequency anomalies in the reflection behaviour of marine sediments.
Oceans 89 Acoustics Arctic Studies
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Author :
language : en
Publisher:
Release Date : 1989
Oceans 89 Acoustics Arctic Studies written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Marine resources categories.
Oceans 91
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Author :
language : en
Publisher: Institute of Electrical & Electronics Engineers(IEEE)
Release Date : 1991
Oceans 91 written by and has been published by Institute of Electrical & Electronics Engineers(IEEE) this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Science categories.
Acoustics And The Sea Bed
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Author : N. G. Pace
language : en
Publisher:
Release Date : 1983
Acoustics And The Sea Bed written by N. G. Pace and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Science categories.