Calculations of acoustic scattering from ellipsoidal voids: bends, krill and fish.
The T-matrix approach is used to calculate the scattering of sound waves by an ellipsoidal void in a fluid. Results are presented for the total cross-section of a sphere as a function of frequency; this is related to the detection of the onset of bends in divers. Results are also presented for the angular variation in scattered amplitude when a plane wave is incident on an ellipsoidal cavity in water; this is related to the target strength of euphausiids and teleostean. It is concluded that the model is a useful representation of the scattering from such marine organisms.
D000818:Animals; D003665:Decompression Sickness / Q000097:blood*; D005399:Fishes; D005740:Gases / Q000097:blood*; D006801:Humans; D008433:Mathematics; D008962:Models, Theoretical; D010933:Plankton; D013016:Sound; D015048:Zooplankton
D005740:Gases