Mars exhibits diverse surface changes at all latitudes and all seasons. Active processes include impact cratering, aeolian sand and dust transport, a variety of slope processes, changes in polar ices, and diverse effects of seasonal CO₂ frost. The extent of surface change has been surprising and indicates that the present climate is capable of reshaping the surface. Activity has important implications for the Amazonian history of Mars: understanding processes is a necessary step before we can understand their implications and variations over time.

中文翻译：

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活跃的火星：一个充满活力的世界

火星在所有纬度和所有季节都表现出不同的表面变化。活动过程包括撞击坑形成、风沙和尘埃输送、各种斜坡过程、极地冰层的变化以及季节性 CO ₂霜冻的各种影响。地表变化的程度令人惊讶，表明目前的气候能够重塑地表。活动对火星的亚马逊历史具有重要意义：了解过程是我们了解其影响和随时间变化之前的必要步骤。