Overview

Underwater Acoustic Modeling provides the only comprehensive source on how to translate our physical understanding of sound in the sea into mathematical formulas solvable by computers.

Full Product Details

Author:   P.C. Etter (Ocean Scientist, USA)
Publisher:   Taylor & Francis Ltd
Imprint:   Spon Press
Edition:   2nd New edition
Dimensions:   Width: 15.60cm , Height: 2.80cm , Length: 23.40cm
Weight:   0.726kg
ISBN:  

9780419201908

ISBN 10:   0419201904
Pages:   360
Publication Date:   30 November 1995
Audience:   College/higher education ,  Professional and scholarly ,  Postgraduate, Research & Scholarly ,  Professional & Vocational
Replaced By:   9780419262206
Format:   Hardback
Publisher's Status:   Out of Print
Availability:   Out of stock  

Table of Contents

Preface. Acknowledgements. Introduction. Background. Measurements and prediciton. Developments in modeling. Inverse acoustic sensing of the oceans. Acoustical oceanography. Background. Physical and chemical properties: Temperature; Salinity distribution; Water masses. Sound speed: Calculation and measurement; Sound speed distribution. Boundaries: Sea surface; Ice cover; Sea floor. Dynamic features: Large-scale features; Meso-scale features; Fronts and eddies; Internal waves; Fine-scales features. Biologics. Propagation I - Observation and physical models. Background. Nature of measurements. Basic concepts. Sea surface boundary: Forward scattering and reflection loss; Image interference and frequency effects; Bubble layers; Ice interaction; Measurements. Sea floor boundary: Forward scattering and reflection loss; Interference and fequency effects; Attenuation by sediments; Measurements. Attenuation and absorption. Surface ducts: Mixed layer distribution; General propagation features; Low-frequency cutoff. Deep sound channel. Convergence zones; Reliable acoustic path. Shallow water ducts. Arctic half-channel. Coherence. Propagation II - Mathematical models (part one). Background. Theorectical basis for propagation modeling: wave equation; Classification of modelling techniques. Ray theory models: Basic theory; Caustics; Gaussian beam tracing; Range dependence; Arrival structure; Beam displacement. Normal mode models: Basic theory; Normal mode solution; Dispersion effects; Experimental measurements; Range dependence; High-frequency adaptations. Multipath expansion models. Fast field models. Parabolic equation models: Basic theory; Numerical techniques; Wide-angle and 3D adaptations; Range-refraction corrections; High-frequency adaptations; Time-Domain applications. The RAYMODE model - A specific example. Numerical model summaries. Propagation II - Mathematical models (Part Two). Background. Surface duct models: Ray theory models; Wave theory models; Oceanographic mixed layer models. Shallow water duct models: Shallow water propagation characteristics; Optimum frequency of propagation; Numerical models; Upslope propagation; Downslope propagation; Empirical models; Rogers model; Marsh-Schulkin model. Arctic models: Arctic environmental models; Arctic propagation models; Numerical models; Empirical models; Marsh-Mellen model; Buck model. Data support requirements: Sound speed profile synthesis; segmented constant gradient; Curvilinear or continuous gradient; Earth curvature corrections; Merging techniques. Special applications: Stochastic modeling; Broadband modeling; Matched-field processing; Transmutation approaches; Chaos; Three-dimensional modeling; Ocean fronts and Eddies; Coupled Ocean-Acoustic Modeling; Acoustic tomography. Noise I - Observations and physical models. Background. Noise sources and spectra: Seismo-acoustic noise; Shipping noise; Bioacoustic noise; Wind and rain noise. D

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