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A newly discharge satellite image reveals Istanbul , the heavy city in Turkey at 15 million denizen , is quickly becoming a " megacity " get over almost 700 hearty miles ( 1,800 solid kilometers ) .
" Megacitieslet us take a smell into our future , when we have to expect that cities that today have ' only ' two to five million inhabitants will farm at an explosive rate , " Hannes Taubenböck , of DLR ’s German Remote Sensing Data Center , read in a affirmation .
A German satellite image provides a detailed view of Istanbul from more than 300 miles (500 kilometers) up. There is dense housing where yellow is predominates. In the city itself, only a few areas remain undeveloped and are thus shown in green.
In this image , adopt by the German Aerospace Agency ’s TerraSAR - X radar satellite , the populated urban areas are color yellow because the city ’s building think over the satellite ’s signals , give an accurate view of its immensity . [ Amazing Science Images ]
The city ’s airdrome is understandably seeable in the bottom left corner of the image — the darker blue color betoken where there are few buildings around the rail . Even the boats are visible dotting the city ’s surrounding sea .
The Bosphorus Suspension Bridge and the Fatih Sultan Mehmet Bridge , build in 1973 and 1988 , severally , have enabled itspopulation to expandacross the Bosphorus Strait , the stretch of water extend from the Black Sea at the top to the Sea of Marmara at the bottom .
Over time, the population and urban sprawl of Istanbul has expanded immensely. The top image shows the population spread in 1975, the middle in 1990 and the bottom image is from 2010.
" These connection to the city shopping center on the European side have generated tremendous growth on the Asiatic side , " Taubenböck said . " Over the last 35 years , the area of Istanbul has tripled . "
radiolocation satellite likeTerraSAR - X , which was establish in 2007 , are useful because they can " see " through clouds and darkness , while typical remote - sensing instruments trust on visible light .
