[酷图] 三峡大坝的卫星照片
http://earthobservatory.nasa.gov/Newsroom/NewImages/Images/PIA03852.jpgThree Gorges Dam, China
The above image shows a 60-kilometer stretch of the Yangtze River in China. In the image, one can see the Xiling Gorge, which is the easternmost of the three big gorges along the Yangtze. The construction site of the Three Gorges Dam, slated to be the world’s largest, sits on the left-hand side of the image along the big bend in the river. The dam is being built in part to control flooding along the Yangtze.
This image was acquired on July 20, 2000, by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA’s Terra satellite. With its 14 spectral bands from the visible to the thermal infrared wavelength region and high spatial resolution of 15 to 90 meters (about 50 to 300 feet), ASTER will image Earth for the next six years to map and monitor the changing surface of our planet.
Size: 60 x 24 kilometers (36 x 15 miles)
Location: 30.6 degrees north latitude, 111.2 degrees east longitude
Orientation: north at top
Image Data: ASTER bands 1,2, and 3
Original Data Resolution: 15 meters
Date Acquired: July 20, 2000 不错。这里有个清晰的大图，8M多：
http://earthobservatory.nasa.gov/Newsroom/NewImages/Images/PIA03852_lrg.jpg 咦，怎么看不到我的家呢？？？ JPG还8M，真是利害。 真是精彩！
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