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海冰光场分布特性的研究是冰区大气—海冰—海洋能量交换和生物特性研究的基础,通过设计“L”型辐亮度探头,运用自主研发的海冰高光谱辐射仪器于国内首次现场测量了辽东湾海冰内部光场的分布特性,研究发现海冰表层5 cm至底层在水平方向上光场各向同性,进而认为在所观测站点的附近,采集冰块测量光场分布不依赖于海冰侧表面的选择。采集海冰于现场建立的暗房内,研究发现相对辐亮度随着深度的增加呈渐近性分布减小,多重散射的影响随光程增加而增强,导致辐亮度对散射角的依赖逐渐减小,说明海冰是一种高散射特的物质。本文建立的海冰光场分布模型,可描述海冰内部任意深度和光传播方向的相对辐亮度,对海冰辐射传输研究具有一定的参考意义。
The research on the distribution characteristics of sea ice light field is the basis for the study of the ice-sea atmosphere-sea ice-ocean energy exchange and biological characteristics. By designing the “L” radiometric probe and using the self-developed sea ice hyperspectral radiation instrument The distribution of the light field inside the ice in Liaodong Bay was measured for the first time. It was found that the light field from 5 cm to the bottom of the sea ice was isotropic in the horizontal direction, and the distribution of the measured light field in the ice was measured in the vicinity of the observed site Does not depend on the choice of sea ice side surface. The sea ice was collected in the darkroom established in the field. It was found that the relative radiance decreases as the depth increases, the influence of multiple scattering increases with the increase of the optical path length, and the dependence of the radiance on the scattering angle decreases , Indicating that sea ice is a high scattering of special material. The sea ice light field distribution model established in this paper can describe the relative radiance of arbitrary depth and direction of light propagation in the sea ice, which is of certain reference significance to the study of sea ice radiation transmission.