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美国航天雷达地形勘测计划是迄今为止最大最全面的一次地形勘测。该计划根据数据资料,绘制了许多地形图。这些地形图既向我们展示了地球沧海桑田的变化,也为我们提示了地形未来变化的线索。
The United States Space Radar Terrain Survey is by far the largest and most comprehensive topographic survey. The plan draws many topographic maps based on data. These topographic maps not only show us the changes in the earth and the earth but also give us clues about the future changes in the terrain.