Optical closure in a complex coastal environment: particle effects.
Optical closure in a complex coastal environment: particle effects.
复制标题
复杂沿海环境中的光学闭合：粒子效应。
作者：
G. Chang;A. Barnard;J. Zaneveld
在圣巴巴拉海峡的一个系泊处收集了一个光学数据集。采用辐射传输模型和统计分析方法研究了现场遥感反射率[r(Rs)(lambda，4m)]和f/q比值的变异性来源。研究发现，固有光学性质的可变性和颗粒大小分布的斜率(Xi)与r(Rs)(λ，4m)的可变性密切相关。F/q的变异性受颗粒类型特征的影响较大。采用半解析辐射传输模型，分析了不同粒子特性对光学闭合的影响。在由生物和矿质颗粒混合而成的水域中，关闭效果最好。
An optical dataset was collected on a mooring in the Santa Barbara Channel. Radiative transfer modeling and statistical analyses were employed to investigate sources of variability of in situ remote sensing reflectance [r(rs)(lambda,4 m)] and the f/Q ratio. It was found that the variability of inherent optical properties and the slope of the particle size distribution (xi) were strongly related to the variability of r(rs)(lambda,4 m). The variability of f/Q was strongly affected by particle type characteristics. A semianalytical radiative transfer model was applied and effects of variable particle characteristics on optical closure were evaluated. Closure was best achieved in waters composed of a mixture of biogenic and minerogenic particles.