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首页> 外文期刊>Journal of Geophysical Research, C. Oceans: JGR >Backscattering by very small particles in coastal waters
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Backscattering by very small particles in coastal waters

机译：沿海水域中很小颗粒的反向散射

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摘要

The volume scattering and backscattering by very small particles (VSPs) of sizes <0.2 μm in four coastal waters in U.S. (Chesapeake Bay, Monterey Bay, Mobile Bay, and the LEO-15 site) were estimated by inverting the measured volume scattering functions (VSFs) at 532 nm. The measured VSFs are consistent with concurrent measurements of total scattering coefficients by the ac-meters and angular scattering at 100, 125, and 150° by the ECO-VSF sensor and at 140° by the HydroScat-6 sensor. The inferred backscattering coefficients by the VSPs correlate strongly with the absorption coefficients measured for the colored dissolved organic matter, indicating that the dissolved portion of particles do scatter light. In the coastal waters that we studied, the backscattering by VSPs dominate over larger particles (of sizes >0.2 μm), accounting for 40–80% of total backscattering at 532 nm, while only account for <5% of total scattering.
机译：通过倒置测得的体积散射函数来估算美国四个沿海水域（切萨皮克湾，蒙特利湾，莫比尔湾和LEO-15站点）的尺寸小于0.2μm的非常小的颗粒（VSP）的体积散射和反向散射。 VSF）在532 nm。测得的VSF与通过交流电表同时测量总散射系数以及通过ECO-VSF传感器在100°，125°和150°以及在HydroScat-6传感器在140°进行角散射的同时测量一致。 VSP推断的反向散射系数与对有色溶解有机物测得的吸收系数密切相关，表明颗粒的溶解部分确实散射了光。在我们研究的沿海水域中，VSP的反向散射在较大颗粒（尺寸> 0.2μm）上占主导地位，占532 nm总反向散射的40–80％，而仅占总散射的<5％。

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