عنوان

Natural Physical Sources of Underwater Sound :

940104709X

9401116261

9789401047098

9789401116268

b594882

Natural Physical Sources of Underwater Sound :

[Book]

Sea Surface Sound (2)

edited by B.R. Kerman.

Dordrecht

Springer Netherlands : Imprint : Springer

1993

(768 pages 20 illustrations, 6 illustrations in color.)

Ambient Noise --; Ocean Acoustic Propagation and Ambient Noise in a Surface Duct --; Low Frequency Ambient Noise --; Generalised Spectra --; Dependence of Sea Surface Noise in Narrow Beams on Windspeed and Vertical Angle --; The Measurement of Underwater Noise Characteristics in Shallow Water --; The Investigation of Underwater Noise Sources by Emission Acoustic Tomography --; Is Sea Surface Ambient Noise Correlated to Wind Turbulence? --; Ambient Sound as a Probe of Ocean Surface Processes --; A Review of Environmental Measurements Taken During Ambient Noise Experiments --; The Properties of the Vertical and Horizontal Power Flows of the Underwater Ambient Noise --; The Perceived Source Directivity of Surface-Generated Ambient Noise --; Low Frequency Noise Measurements in an Ambient Environment Dominated by Natural Sources of Sound --; The Effect of Monomolecular Films on Low Sea State Ambient Noise --; VLF/Seismo-Acoustics --; Depth Dependence and Some Anomalous Effects of Noise from Surface Wave Interaction --; Deep-Water Sea-Floor Array Observations of Seismo-Acoustic Noise in the Eastern Pacific and Comparisons with Wind and Swell --; Obseivations of the Near-Field Double Frequency Pressure Spectrum in the Upper Ocean Using the Cartesian Diver Profiling Instrument --; An Analysis of the ULF Acoustic Noise Field in the Ocean --; Observations and Causes of Ocean and Seafloor Noise at Ultra-Low and Very-Low Frequencies --; Very Low Frequency Sound Studied Using Multi-Element Seafloor Arrays --; Air-Water Turbulence --; Generation of a Low Frequency Acoustical Noise in the Layered Ocean by the Surface Sources --; The Theory of Low-Frequency Noise Generated by Turbulence Near The Atmosphere-Ocean Interface --; Bursting Phenomena in the Turbulent Boundary Layer Beneath the Laboratory Wind-Wave Surface --; Bubbles --; LF Source and Scattering --; Low Frequency Noise from Breaking Waves --; The Influence of a Subsurface Bubble Layer on Wind Ambient Noise Generation --; Near Surface Sound Mechanisms --; Modelling Low-Frequency Bubble Plume Scattering --; Near Sea Surface Bubble Cloud Oscillation as Potential Sources of Ambient Noise --; Backscatter from Near-Surface Bubble Clouds --; Nonlinear Sound Scattering From Subsurface Bubble Layers --; Collective Oscillations in a Bubble Column --; Bubbles --; HF Source and Scattering --; The Lifetimes, Velocities and Probable Origin of Sonic and Ultrasonic Noise Sources on the Sea Surface --; Bubble Pulsations Excited by Nonlinear Interactions of Surface Modes --; The Production of High-Frequency Ambient Noise by Capillary Waves --; Bubble Noise Mechanisms --; A Review --; Bubble Sizing by the Nonlinear Scattering of Two Acoustic Frequencies --; Bubbles --; Breaking Waves --; Fractal Geometry and Sound Generation of a Wind-Swept Sea --; Bubbles, Noise and Breaking Waves: A Review of Laboratory Experiments --; Occurrence and Evolution of Acoustically Relevant Sub-Surface Bubble Plumes and Their Associated, Remotely Monitorable, Surface Whitecaps --; Bubble Plumes and Turbulence --; ICE --; The Learning Behaviour of Sea Ice --; Source Mechanisms for Arctic Ocean Ambient Noise --; Vertical Directivity Measurements of Ice Cracking --; Spatial Variation in Ambient Sound Level Within Ice Edge Eddies --; Aspects of the Mechanics and Modelling of Thermally-Induced Stresses in Arctic Pack Ice as Related to Under-Ice Ambient Noise --; Sea Ice Constitutive Behaviour and Under-Ice Noise --; Wave Induced Noise Generation in the Marginal Ice Zone --; Predictions and Measurements of the Directivity of a Monopole Source in a Floating Ice Plate --; Acoustic Radiation Beneath the Arctic Ice Cover --; Rain --; Impact and Bubble Radiation from Obliquely Incident Raindrops --; An Explanation of the Sound Generated by Light Rain in the Presence of Wind --; Drop Impact and the Underwater Noise of Rain --; Sources of Underwater Rain Noise --; Other Mechanisms --; Noise in the Ocean Caused by Lightning Strokes --; On Cosmic Radiation Possible Contribution in Dead Calm High Frequency Ocean Noise Formation --; Seabed Saltation Noise.

The generation of oceanic sound by natural physical mechanisms is a topic of scientific inquiry with a wide range of applications, both environmental and naval. Sound is generated by waves interacting, by waves breaking, by wind noise transmitted directly into, and by rain, snow and spray falling onto the water. Sound is also generated in frozen seas by ice either rubbing or cracking.
This book contains the proceedings of an international conference 'Natural Physical Sources of Underwater Sound' held at the University of Cambridge in July 1990. The contents of the 54 papers cover the topics of ambient noise, very low and seismic noise, noise from turbulence and bubbles singly and collectively, rain noise, ice noise, as well as thunder, cosmic ray and sea-bottom saltation. The material represents the considerable advances made by hydrodynamicists and acousticians since the first meeting on the topic held in Lerici, Italy in 1987, and published as a companion volume from Kluwer, entitled Sea Surface Sound .
The material in both books is dedicated to characterizing and understanding natural, as opposed to man-made, mechanisms of underwater sound generation. Questions of propagation and scattering are included only as necessary to understanding generation itself.
A reader interested either in a review of the status of this interdisciplinary field of geohydrodynamical acoustics, or with a general interest in natural acoustics, will find this book of great value.

Proceedings of the Conference on 'Natural Physical Sources of Underwater Sound', Cambridge, U.K., July 3-6, 1990

Noise -- Congresses.

Ocean waves -- Congresses.

Underwater acoustics -- Congresses.

edited by B.R. Kerman.

B R Kerman

[Book]

Y