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Appendix B: Glossary of Terms
Absorption: loss of acoustic energy due to conversion to heat.
Accreditation: the ofcial certication that a model or simulation is acceptable for
a specic purpose.
Acoustic daylight: imaging of underwater objects using the ambient-noise eld.
Acoustic impedance: characteristic acoustic impedance is quantitatively equal to
the product of the density and sound speed of the medium.
Acoustic tomography: inverse technique that uses acoustic signals to sample the
interior of a water body.
Acoustical oceanography: describes the role of the ocean as an acoustic medium by
relating oceanic properties to the behavior of underwater ...