This book provides an up-to-date introduction to the theory of sound propagation in the ocean. The text treats both ray and wave propagation and pays considerable attention to stochastic problems such as the scattering of sound at rough surfaces and random inhomogeneities. An introductory chapter that discusses the basic experimental data complements the following theoretical chapters.
New material has been added throughout for this third edition. New topics covered include:

• inter-thermocline lenses and their effect on sound fields
• weakly divergent bundles of rays
• ocean acoustic tomography
• coupled modes
• sound scattering by anisotropic volume inhomogeneities with fractal spectra
• Voronovich's approach to sound scattering from the rough sea surface.
  In addition, the list of references has been brought up to date and the latest experimental data have been included.

From the reviews of the third edition: This is a small book with a wide scope and great intensity. this book shows how phenomena such as convergence zones can be analysed mathematically. In summary, this book is for those wishing to use mathematics to gain insight into the underlying physics behind underwater acoustics. (Adrian Brown, International Journal of Acoustics and Vibration, Vol. 14 (1), 2009)

Inhalt
The Ocean as an Acoustic Medium.- Ray Theory of the Sound Field in the Ocean.- Reflection of Sound from the Surface and Bottom of the Ocean: Plane Waves.- Reflection of Sound from the Surface and Bottom of the Ocean: Point Source.- Propagation of Sound in Shallow Water.- Underwater Sound Channel.- Range-Dependent Waveguide.- Antiwaveguide Sound Propagation.- Scattering of Sound at Rough Surfaces.- Sound Propagation in the Random Ocean.- Scattering and Absorption of Sound by Gas Bubbles in Water.