[:ja]NASAの地球観測衛星Suomi NPPが撮影した夜のアルゼンチン中部、コルドバ州付近の様子です。
Seen from space by day, central Argentina looks green and unpopulated. But by night… pic.twitter.com/99iblmBKTN
— NASA Earth (@NASAEarth) 2017年8月2日
以下の画像の通り、日中は緑の平原、湿潤パンパが広がっています。パンパは国土の約25%、ブエノスアイレス州とコルドバ州のほぼ全てと、サンタフェ州とラ・パンパ州の大部分を占め、アルゼンチンの富の多くを生み出しています。人の気配はあまりありませんが、これが夜になると、人間活動が顕著にわかります。
光のドットが直線的に写っていますが、これは20世紀中に20~30kmおきに開発された鉄道駅及びその周辺の町です。最近ではトラックなど自由度の高い自動車による物流が主流になってきていますが、鉄道による輸送網があります。
地上の様子はこちらです。
参考文献： Argentina After Dark (Twitter)
参考文献： Argentina After Dark (NASA Earth Observatory)
ウェブ地球儀で地球俯瞰画像を見る： LiVEARTH
[Earthview Wonders][Video] No.311: Argentina After Dark🇦🇷
NASA’s Suomi NPP satellite captured the night view of Córdoba (Cordoba) State, central Argentina at night.
Seen from space by day, central Argentina looks green and unpopulated. But by night… pic.twitter.com/99iblmBKTN
— NASA Earth (@NASAEarth) 2017年8月2日
When viewed from a satellite in daylight, the landscape of central Argentina shows barely a sign of human settlement. As can be seen from the image below, the pampas, fertile South American lowlands, covers the most of Cordoba State.
But by night, evenly spaced (30-50km) luminescent dots are seen, as many of the towns grew up around railway stations. Maps from the middle of the 20th century show the network of railway lines that gave shape to this curious configuration.
The local scenery on the ground is follows.
Reference: Argentina After Dark (Twitter)
Reference: Argentina After Dark (NASA Earth Observatory)
See earthview photo gallery with web-globe: LiVEARTH[:en][Earthview Wonders][Video] No.311: Argentina After Dark🇦🇷
NASA’s Suomi NPP satellite captured the night view of Córdoba (Cordoba) State, central Argentina at night.
Seen from space by day, central Argentina looks green and unpopulated. But by night… pic.twitter.com/99iblmBKTN
— NASA Earth (@NASAEarth) 2017年8月2日
When viewed from a satellite in daylight, the landscape of central Argentina shows barely a sign of human settlement. As can be seen from the image below, the pampas, fertile South American lowlands, covers the most of Cordoba State.
But by night, evenly spaced (30-50km) luminescent dots are seen, as many of the towns grew up around railway stations. Maps from the middle of the 20th century show the network of railway lines that gave shape to this curious configuration.
The local scenery on the ground is follows.
Reference: Argentina After Dark (Twitter)
Reference: Argentina After Dark (NASA Earth Observatory)
See earthview photo gallery with web-globe: LiVEARTH[:]