探索地球家园 令人惊叹的NASA地球日壁纸集 09年6月的全球数字高程模型 Global Digital Elevation Model 壁纸下载
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探索地球家园 令人惊叹的NASA地球日壁纸集 09年6月的全球数字高程模型 Global Digital Elevation Model 壁纸下载 09年6月的全球数字高程模型 Global Digital Elevation Model This Global Digital Elevation Model or GDEM is a product of the Advanced Spaceborne Thermal Emission and Reflection Radiometer ASTER a joint program of NASA and Japan s Ministry of Economy Trade and Industry The image was released on June 29 2009 and was created by processing and stereo correlating the 1 3 million scene ASTER archive of optical images covering Earth s land surface between 83 degrees North and 83 degrees South latitudes The GDEM is produced with 98 feet postings and is formatted as 23 000 one by one degree tiles In this colorized version low elevations are purple medium elevations are greens and yellows and high elevations are orange red and white,
探索地球家园令人惊叹的NASA地球日壁纸集,
风景壁纸