The penetration depth of broad spectrum solar irradiation over the wavelength range 300–1,100 nm has been experimentally measured for water and carbon dioxide ices of different grain size ranges. Both of these ice compositions are found on the surface of Mars and have been observed as surface frosts, snow deposits, and ice sheets. The e‐folding scale of snow and slab ice has been previously measured, but understanding the behavior between these end‐member states is important for modeling the thermal behavior and surface processes associated with ice deposits on Mars, such as grain growth and slab formation via sintering, and carbon dioxide jetting leading to the formation of araneiforms. We find the penetration depth increases in a predictable way with grain size, and an empirical model is given to fit these data, varying with both ice composition and grain size.

中文翻译：

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火星上太阳辐射渗透到颗粒状二氧化碳和水冰中的过程

通过实验测量了不同粒径范围的水和二氧化碳冰在300–1,100 nm波长范围内的广谱太阳辐射的穿透深度。这两种冰成分均在火星表面发现，并已观察到为表面霜冻，积雪和冰盖。该Ë先前已经测量了积雪和板状冰的折叠尺度，但是了解这些末端成员状态之间的行为对于建模与火星上的冰沉积相关的热行为和表面过程（例如晶粒长大和通过烧结形成板块）非常重要，和二氧化碳的喷射导致阿拉伯文形式的形成。我们发现渗透深度随着晶粒尺寸的增加以可预测的方式增加，并给出了一个经验模型来拟合这些数据，并且随冰成分和晶粒尺寸的变化而变化。