File:Phoenix.landsat.750pix.jpg

摘要

from the english wikipedia, original text:

"Situated in southern central Arizona, Phoenix is the state’s capital and largest city. Home to about 1.3 million residents, it is the United States' fifth largest city. Located in the northeastern corner of the Sonoran Desert, Phoenix sits on the northern shore of the Salt River, which can be seen running east to west through the center of this scene. Across the Salt River are the towns of Tempe and Mesa, to the south and southeast. Phoenix is actually surrounded by 22 towns and cities that have grown so closely together in recent decades it is almost impossible to distinguish one from another in this 30-meter-resolution satellite image. The large cluster of light brown pixels gridded by horizontal and vertical lines (roads and highways) demarcates the greater Phoenix urban area.

This true-color image of Phoenix was acquired by the Enhanced Thematic Mapper plus (ETM+), flying aboard the Landsat 7 satellite, on May 11, 2002. Image courtesy Ron Beck, USGS Land Processes Data Center, Satellite Systems Branch SOURCE: http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=15282 ”The purpose of NASA's Earth Observatory is to provide a freely-accessible publication on the Internet where the public can obtain new satellite imagery and scientific information about our home planet. The focus is on Earth's climate and environmental change. In particular, we hope our site is useful to public media and educators. Any and all materials published on the Earth Observatory are freely available for re-publication or re-use, except where copyright is indicated. We ask that NASA's Earth Observatory be given credit for its original materials.”

Picture prepared for Wikipedia by Adrian Pingstone in November 2003."

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