Study on Light Scattering Characteristics of Organic Bubbles
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摘要: 为了更好地解释真实海洋环境中尾流的光散射特性, 探究在真实海洋环境中由于有机物薄膜引起的尾流气泡光散射特性的变化。文中基于Mie散射理论, 仿真了不同波长入射光时干净气泡, 以及被蛋白质膜和脂质膜包裹的有机气泡的散射光强分布、散射系数、散射相函数及偏振度。仿真结果表明: 干净气泡和2种膜包裹的有机气泡的散射系数均在2.025上下震荡, 且有机气泡的震荡幅值明显大于干净气泡; 当散射角为180°时,有机气泡的散射光强和散射相函数的值明显增大; 有机气泡可以增大散射系数震荡的幅值并增大背向散射强度。仿真结果可为实际海洋环境尾流探测提供理论与数据支撑, 也为海洋污染监测、水质勘探等提供现实依据。Abstract: In order to provide a more thorough explanation of the light scattering characteristics of wake in real marine environments, this study examined the variations in light scattering characteristics of wake bubbles induced by organic matter films in real marine environments. Drawing on Mie’s scattering theory, the study simulated the scattering intensity distribution, scattering coefficient, scattering phase function, and polarization degree of clean bubbles, as well as organic bubbles enveloped in protein and lipid films, under varying wavelengths of incident light. The simulation findings reveal that the scattering coefficients of clean bubbles and the two types of organic bubbles enveloped in films fluctuate around 2.025, with the organic bubbles exhibiting significantly larger oscillation amplitudes than the clean bubbles. Notably, at a scattering angle of 180°, the scattering intensity and scattering phase function of organic bubbles experience a notable increase. These organic bubbles can amplify the amplitude of scattering coefficient oscillations and the intensity of backscattering. The simulation results offer theoretical and data support for wake detection in real marine environments and provide a practical foundation for research on marine pollution monitoring and water quality assessment.
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图 1 λ
$ {\boldsymbol{ =}} {\boldsymbol{632.8}}\;{\bf{nm}} $ 时光强取对数之后的分布图Figure 1. Light intensity distribution after taking logarithm at λ
$ {\bf{= 632.8}}\;{\bf{nm}} $ 
图 2 λ
$ {\bf{= 532}}\;{\bf{nm}} $ 时光强取对数之后的分布图Figure 2. Light intensity distribution after taking logarithm at λ
$ {\bf{= 532}}\;{\bf{nm}} $ 
图 3 λ
$ {\boldsymbol{= 632.8}}\;{\bf{nm}} $ 时不同折射率散射系数分布Figure 3. Distribution of scatter coefficients with different refractive indices at λ
$ {\boldsymbol{= 632.8}}\;{\bf{nm}} $ 
图 4 λ
$ {\boldsymbol{=}} {\boldsymbol{532}}\;{\bf{nm}} $ 时不同折射率散射系数分布Figure 4. Distribution of scatter coefficients with different refractive indices at λ
${\boldsymbol{=}} {\boldsymbol{532}}\;{\bf{nm}} $ 
图 5 λ
$ {\boldsymbol{= 632.8}}\;{\bf{nm}} $ 时散射相函数取对数之后分布图Figure 5. Scattering phase function distribution after taking logarithms at λ
${\boldsymbol{=}} {\boldsymbol{632.8}} \;{\bf{nm}} $ 
图 6 λ
$ {\boldsymbol{= 532}}\;{\bf{nm}} $ 时散射相函数取对数后分布图Figure 6. Scattering phase function distribution after taking logarithms at λ
$ {\boldsymbol{= 532}}\;{\bf{nm}} $ 
图 7 λ
$ {\boldsymbol{ = 632.8}}\;{\bf{nm}} $ 时3种状态下偏振度对比Figure 7. Comparison of polarization degrees in three states at λ
${\boldsymbol{ = 632.8}}\;{\bf{nm}} $ -
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