A monopole scattering of sound by microparticles in a liquid is considered for microparticles of two types: spherically symmetric particles similar to gas bubbles in a liquid and disk-shaped gas-filled particles whose bases may oscillate in antiphase. A transformation of the scattering amplitude to the function that, in particular, describes the oscillations of a particle removed from the liquid is proposed. This function extends the possibilities of the acoustic diagnostics of such particles. Estimates of the sound velocity in water containing disk-shaped particles suggest that the sound velocity increase observed in sea water with plankton can be explained by the monopole scattering of sound from a single plankton particle modeled as a rigid gas-filled disk with oscillating parts of its bases. (C) 2004 MAIK "Nauka/Interperiodica".
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机译：对于两种类型的微粒，可以考虑由微粒在液体中产生的单极声散射：类似于液体中的气泡的球形对称微粒和其基部可能在反相中振动的盘状充气微粒。提出了将散射幅度转换为函数的转换，该函数尤其描述了从液体中去除的颗粒的振荡。此功能扩展了此类颗粒的声学诊断的可能性。对含有圆盘状颗粒的水中声速的估计表明，在浮游生物中的海水中观察到的声速增加可以用单个浮游生物颗粒的单极声散射来解释，该单个浮游生物颗粒建模为带有振动部分的刚性充气盘。它的基础。 （C）2004 MAIK“ Nauka / Interperiodica”。
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