• http://www.businessinsider.com, NASA Earth Observa
Unlike daylight images, city lights at night illustrate dramatically
the relative economic importance of cities, as gauged by relative size.
In this north-looking view, it is immediately obvious that greater
Seoul is a major city and that the port of Gunsan is minor by
comparison. There are 25.6 million people in the Seoul metropolitan
area—more than half of South Korea’s citizens—while Gunsan’s population
North Korea is almost completely dark compared to neighboring South
Korea and China. The darkened land appears as if it were a patch of
water joining the Yellow Sea to the Sea of Japan. Its capital city,
Pyongyang, appears like a small island, despite a population of 3.26
million (as of 2008). The light emission from Pyongyang is equivalent to
the smaller towns in South Korea.
Coastlines are often very apparent in night imagery, as shown by
South Korea’s eastern shoreline. But the coast of North Korea is
difficult to detect. These differences are illustrated in per capita power consumption in the two countries, with South Korea at 10,162 kilowatt hours and North Korea at 739 kilowatt hours.
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