Gordon H R, Brown O B
Appl Opt. 1974 Sep 1;13(9):2153-9. doi: 10.1364/AO.13.002153.
The influence of the bottom albedo on the diffuse reflectance of a flat, homogeneous ocean is computed as a function of bottom depth and albedo for three oceanic scattering phase functions and several values of omega(0). The results show that the bottom can have a large effect on the reflectivity, especially for small optical depths. When combined with the observed optical properties of clear natural water, the calculations are shown to be in good agreement with the observed dependence of in-water nadir radiance spectra, with depth. The apparent independence of the reflectance on the mode of illumination observed earlier for the infinitely deep ocean is found to be invalid for a shallow ocean. The effect of departures of the bottom law of diffuse reflectance from Lambertian is investigated and shown to be considerable in some cases.
计算了底部反照率对平坦、均匀海洋漫反射率的影响，该影响是底部深度和反照率的函数，涉及三种海洋散射相位函数以及几个ω(0)值。结果表明，底部对反射率有很大影响，特别是对于小光学深度的情况。当与清澈天然水的观测光学特性相结合时，计算结果与观测到的水中天底辐射光谱随深度的依赖关系吻合良好。之前发现的无限深海中反射率与照明模式明显无关的情况，对于浅海来说是无效的。研究了底部漫反射率定律偏离朗伯定律的影响，结果表明在某些情况下这种影响相当大。
