"Acoustic Sensing Techniques for the Shallow Water Environment: Inversion Methods and Experiments" ed. by Andrea Caiti, et al.

This volume, includes a range of diverse and innovative applications, as well as comparisons in the field among competing approaches and review papers. This book is primarily intended for physicists and engineers working in underwater acoustics and oceanic engineering. It will also be of interest to marine biologists, geophysicists and oceanographers as potential users of the methodologies and techniques described in the book contributions.

To review the state of the art and the research progress in the Acoustic remote sensing of the ocean environment, a workshop was held in the island of Ischia, Italy, in June 2004. Special emphasis has been placed on the experimental applications, to realistically assess their potential and capabilities of the methods proposed.

The invited contributions range from ocean acoustic tomography to estimation of the seabed and subbottom properties, to marine biology; ambient noise in the ocean is increasingly being investigated as a replacement for traditional acoustic source, to make acoustic inversion even less invasive and more environmentally friendly as a methodology to probe the ocean.

Contents
Preface
Acknowledgements
On the assessment of geoacoustic parameters in shallow water environments
Bayesian inversion of seabed reflection data
Backpropagation techniques in ocean acoustic inversion: time reversal, retrogation and adjoint modelling - A review
Acoustic inversion at low kHz frequencies using an active, vertical line array
Dispersion of broadband acoustic normal modes in the context of long range sediment tomography
Characterization of local seabed properties using synthesized horizontal array data
Characterization of a range-dependent environment from towed array data
Accounting for bias in horizontal wavenumber estimates due to source motion
Acoustic clutter from buried submarine mud volcanoes
Nonlinear acoustical methods in the detection of gassy sediments
Acoustic scattering from submerged and buried objects
High-frequency bistatic scattering experiments using proud and buried targets
A sediment probe for the rapid assessment of seabed characteristics
Continuous acoustic monitoring of physiological and environmental processes in seagrass prairies with focus on photosynthesis
Shallow water tomography in a highly variable scenario
Inversions of reflection loss measurements of a smooth water/sand interface
Estimation of transmission loss and its uncertainty
A forward model for geoacoustic inversion based on ray tracing and plane-wave reflection coefficients
Inversion of the propeller harmonics from a light aircraft for the geoacoustic properties of marine sediments
Inversion of shallow water ambient noise data by means of differential evolution as a global search method
Reflection loss and sub-bottom profiling with ambient noise
Inversion of geoacoustic model parameters using ship radiated noise
Matched-field processing of humpback whale song off eastern Australia
Inversions of horizontal and vertical line array data for the estimation of geoacoustic model parameters
Issues of environmental variability in inverse problems in ocean
Author Index
Subject Index