The seamount as a noise barrier
When the path from a localized noise source is intercepted by a seamount the shielded noise consists of a diffracted component and, if the seamount is close to a sufficiently smooth ocean surface , a multiply-reflected component as well. The magnitude and frequency filter i ng of the blockage caused by the seamount is here determined by using the impulse solution of diffraction by a rigid wedge as a module for the computer calculation of multiple diffraction at gross changes of slope along t he seamount and at its crest line. These computer calculations are validated by comparison with laboratory measurements using a scale model of DICKENS Seamount which has previously been shown to be an effective technique for the calculation of topographical diffraction at sea.
SourceIn: Underwater Ambient Noise (SACLANTCEN Conference Proceedings CP-32), Vol. 2, Part 2, 1982, pp. 24-1 - 24-11.
Jordan, Edgar A.