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Ocean Seismo-Acoustics

Low-Frequency Underwater Acoustics

  • Book
  • © 1986

Overview

Editors:
  1. Tuncay Akal

    1. SACLANT ASW Research Center, La Spezia, Italy

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    You can also search for this editor in PubMed   Google Scholar

  2. Jonathan M. Berkson

    1. SACLANT ASW Research Center, La Spezia, Italy

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    You can also search for this editor in PubMed   Google Scholar

Part of the book series: Nato Conference Series (NATOCS, volume 16)

Part of the book sub series: IV Marine Sciences (MARS)

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Table of contents (83 chapters)

  1. Front Matter

    Pages i-xv
    Download chapter PDF

  2. Propagation: Theoretical Developments

    1. Sound Pulse Propagation in a Weakly Range Dependent Shallow Ocean

      • E. Topuz, L. B Felsen
      Pages 1-10

    2. Intrinsic Modes in a Wedge-Shaped Ocean with Stratified Elastic Bottom

      • I. T. Lu, L. B. Felsen
      Pages 11-20

    3. A Green’s Function Method for One-Way Wave Propagation in a Range-Dependent Ocean Environment

      • K. E. Gilbert, R. B. Evans
      Pages 21-28

    4. Factorization and Path Integration of the Helmholtz Equation: Numerical Algorithms

      • Louis Fishman, Stephen C. Wales
      Pages 29-38

    5. Range Dependent Propagation Codes Based on Wave Field Factorization and Invariant Imbedding

      • John J. McCoy, Louis Fishman, L. Neil Frazer
      Pages 39-46

    6. An Acoustic Reflectivity Method for Laterally Varying Layered Media

      • L. Neil Frazer, John J. McCoy
      Pages 47-55

    7. A Vector Parabolic Equation Model for Elastic Propagation

      • Stephen C. Wales
      Pages 57-66

    8. Influence of Bottom Refraction on the Propagation of Underwater Sound

      • J. Miller, A. Nagl, H. Überall
      Pages 67-73

    9. Bottom Interaction Effects on Normal Modes: an Algebraic Approach

      • David H. Wood, Mark D. Duston, Ghasi R. Verma
      Pages 75-85

    10. Gaussian Beams and 3-D Bottom Interacting Acoustic Systems

      • Homer P. Bucker, Michael B. Porter
      Pages 87-101

    11. Development of a Parabolic Approximation for the Computation of Propagation Loss in a Range-Dependent Environment

      • B. Grandvuillemin
      Pages 103-114

  3. Propagation: Modelling and Experiments

    1. Linear and Nonlinear Ocean Acoustic Propagation Models

      • W. A. Kuperman, B. E. McDonald
      Pages 115-128

    2. Modeling of Pulse Response Functions of Bottom Interacting Sound Using the Parabolic Equation Method

      • F. D. Tappert, L. Nghiem-Phu
      Pages 129-137

    3. A Study of Propagation Loss Dependence on Sediment Layer Thickness Using the Fast Field Program

      • C. H. Harrison, P. L. Cousins
      Pages 139-148

    4. Shear Wave Effects on Propagation to a Receiver in the Substrate

      • Paul J. Vidmar, Robert A. Koch
      Pages 149-157

    5. Description and Some Results of the Operational Propagation Loss Model ALMOST (= Acoustic Loss Model for Operational Studies and Tasks)

      • P. Schippers
      Pages 159-168

    6. Experimental Confirmation of Horizontal Refraction of Sound Propagation in a Wedge-Like Ocean

      • R. Doolittle, A. Tolstoy, M. Buckingham
      Pages 169-178

    7. Acoustic Propagation over Large-Scale Linear Ocean Slopes

      • D. R. DelBalzo, J. E. Matthews, J. V. Soileau, C. Feuillade
      Pages 179-189

    8. Predicted Partitioning of VLF Acoustic Energy in a Range-Dependent Environment

      • T. W. Tunnel, G. J. Tango
      Pages 191-197
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Keywords

About this book

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.

Editors and Affiliations

  • SACLANT ASW Research Center, La Spezia, Italy

    Tuncay Akal, Jonathan M. Berkson

Bibliographic Information

  • Book Title: Ocean Seismo-Acoustics

  • Book Subtitle: Low-Frequency Underwater Acoustics

  • Editors: Tuncay Akal, Jonathan M. Berkson

  • Series Title: Nato Conference Series

  • DOI: https://doi.org/10.1007/978-1-4613-2201-6

  • Publisher: Springer New York, NY

  • eBook Packages: Springer Book Archive

  • Copyright Information: Springer Science+Business Media New York 1986

  • Softcover ISBN: 978-1-4612-9293-7Published: 27 July 2012

  • eBook ISBN: 978-1-4613-2201-6Published: 09 March 2013

  • Edition Number: 1

  • Number of Pages: XV, 915

  • Number of Illustrations: 229 b/w illustrations

  • Topics: Oceanography

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