Posts Currently viewing the tag: "optical"

Erta Ale volcano is a large basaltic shield volcano in the Erta Ale volcanic range in the central northern Danakil depression (NE Ethiopia). Erta Ale is one of the main attractions of the Danakil, and had become a popular tour destination in recent years. In Ethiopia’s Afar region—where three tectonic plates wrench themselves…(Read More)

Mining of stone and metal has been done since pre-historic times. Modern mining processes involve prospecting for ore bodies, analysis of the profit potential of a proposed mine, extraction of the desired materials, and final reclamation of the land after the mine is closed. The nature of mining processes creates a potential negative impact…(Read More)

Milan at Night

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The metropolitan area of Milan (or Milano) illuminates the Italian region of Lombardy in a pattern evocative of a patchwork quilt. The city of Milan forms a dense cluster of lights in this astronaut photograph, with brilliant white lights indicating the historic center of the city where the Duomo di Milano (Milan Cathedral) is located…(Read More)

Shanghai at Night

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The city of Shanghai sits along the delta banks of the Yangtze River along the eastern coast of China. The city proper is the world’s most populous city (the 2010 census counts 23 million peoples). With that many humans, the city is a tremendous sight at night. Shanghai is a key financial capital for…(Read More)

Riyadh at Night

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The population of Riyadh, the capital city of Saudi Arabia, has risen dramatically in the last half century—from 150,000 in 1960 to 5.4 million in 2012. The city appears as a brightly colored patchwork in this nighttime astronaut photograph. The brightest lights, apart from those on the old Riyadh Airbase, follow the…(Read More)

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