Accession Number : AD0479437

Title :   REFLECTION OF PLANE WAVES FROM A SOLID MULTILAYERED DAMPING BOTTOM.

Descriptive Note : Technical rept.,

Corporate Author : SACLANT ASW RESEARCH CENTRE LA SPEZIA (ITALY)

Personal Author(s) : Hastrup, Ole F.

Report Date : 01 MAR 1966

Pagination or Media Count : 52

Abstract : A further development of the matrix formalism suggested by W. T. Thompson in 1950 has been used to calculate the complex transfer function and reflection coefficient from a multilayered general sea floor, taking both compressional and shear waves and their damping into account. The method is used to calculate reflection loss isolines for models with up to three general layers. The results are given in terms of the angle of incidence and of the wave number. The influence of shear waves and their damping has been investigated using a two layer model and several wave numbers. Because of the importance of vertical incidence measurements, the information obtained from the reflection coefficient for models with up to two layers has been investigated. (Author)

Descriptors :   (*SOUND, REFLECTION), (*OCEAN BOTTOM, SOUND), OCEAN MODELS, MATRICES(MATHEMATICS), PARTIAL DIFFERENTIAL EQUATIONS, SHEAR STRESSES, SEDIMENTATION, ABSORPTION, VELOCITY, DAMPING, PROPAGATION, SOLIDS.

Subject Categories : Physical and Dynamic Oceanography
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE