Urban Extent, Europe : 無料・フリー素材/写真
Urban Extent, Europe / SEDACMaps
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
|---|---|
| 説明 | Urban extents illustrate the shape and area of urbanized places. Urbanized localities are defined as places with with 5,000 or more inhabitants that are delineated by stable night-time lights. For poorly lit areas, alternate sources are used to estimate the extent of cities. |
| 撮影日 | 2012-05-21 13:22:56 |
| 撮影者 | SEDACMaps |
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