| http://www.w3.org/ns/prov#value | - SAR, which can ???see??? through clouds and can collect data day or night, is useful for monitoring glaciers and sea ice, ocean waves, coastal erosion, and disasters such as fires, floods, volcanic eruptions, and oil spills. (Measures radio waves; http://www.asf.alaska.edu) ??? Landsat???Landsat is a series of satellites starting with the first Landsat in 1972 to Landsat 7 launched in August of 19
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