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Okmok Volcano Erupts

Sulfur Dioxide from Okmok Volcano
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Sulfur Dioxide from Okmok Volcano

On July 12, 2008, Okmok Volcano, in Alaska’s Aleutian Islands erupted, releasing a plume of ash and steam. Besides emissions visible to human eyes, Okmok also released sulfur dioxide, a gas our eyes cannot see, but which can affect both human health and climate.

Image of the Day Atmosphere Land Volcanoes