Science. 1969 Mar 7;163(3871):1058-60. doi: 10.1126/science.163.3871.1058.
Analysis of data on the spectral reflectivity curves for both bright and dark areas of Mars disclosed several features not considered in previous models of the martian surface. The shape of the mean spectral geometric albedo curve between 0.3 and about 1.3 microns for Mars is defined to within a few percent. Spectral reflectivity curves based on relative reflectivity data were calculated for both a bright and a dark region between 0.4 and 1.1 microns. The curve for the dark region shows a broad, deep ( approximately 13 percent) absorption feature centered near 1 micron. The curve for the dark area crosses that of the bright area between 0.4 and 0.5 micron during some martian seasons.
分析火星亮区和暗区的光谱反射率曲线数据揭示了一些之前火星表面模型未曾考虑到的特征。在 0.3 到 1.3 微米之间，平均光谱几何反照率曲线的形状精度在百分之几以内。基于相对反射率数据，计算了 0.4 到 1.1 微米之间的亮区和暗区的光谱反射率曲线。暗区的曲线在 1 微米附近显示出一个宽而深（约 13%）的吸收特征。在某些火星季节，暗区的曲线在 0.4 到 0.5 微米之间与亮区的曲线相交。
