A THEORETICAL PHOTOMETRIC FUNCTION FOR THE LUNAR SURFACE
A THEORETICAL PHOTOMETRIC FUNCTION FOR THE LUNAR SURFACE
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月球表面的理论光度函数
DOI：
10.1029/jz068i015p04571
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发表时间：
1963
影响因子：
--
通讯作者：
B. Hapke
中科院分区：
文献类型：
--
作者：
B. Hapke
从理论上推导了描述月球表面观测光度特性的公式。得到了微分亮度和积分亮度的函数。推导所基于的模型表面由一层半无限的多孔层组成，该层由随机放置的模糊对象组成，这些对象以这样一种方式悬浮在深度，使分隔它们的空隙相互连接。一层细小、松散致密的尘埃层属于这个模型所描述的表面，但火山泡沫不属于这一类。光度控制曲线的形状取决于空洞体积分数。月球表面上层的体积密度约为固体岩石的十分之一。
A formula describing the observed photometric properties of the lunar surface is derived theoretically. Functions for both the differential and integral brightness are obtained. The model surface on which the derivation is based consists of a semi-infinite, porous layer of randomly placed obscuring objects suspended in depth in such a way that the interstices separating them are interconnected. A layer of fine, loosely compacted dust is in the category of surfaces described by this model, but volcanic foam is not. The shape of the photometric curve depends on the fractional void volume. Bulk densities of the order of one-tenth that of solid rock are implied for the upper layers of the surface of the moon.