24 May '11, 10pm

Gorgeous satellite view of erupting #Grimsvotn, from the always-fascinating @NASA_EO #volcano

One year after Eyjafjallajökull rumbled to life, another Iceland volcano began spewing ash and steam. At approximately 17:30 Universal Time (5:30 p.m. local time) on May 21, 2011, Grímsvötn began to erupt. The volcano sent a plume of ash and steam about 20 kilometers (12 miles) into the atmosphere, the Icelandic Met Office reported. Overnight, the plume height dropped to 15 kilometers (9 miles), but occasionally rose to its initial altitude. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured this natural-color image at 13:00 UTC (1:00 p.m. local time) on May 22, 2011. (MODIS on NASA’s Aqua satellite captured another image of the volcano about 8 hours earlier.) Above Grímsvötn’s summit, volcanic ash forms a circular brown plume that towers above the surrounding clouds. In the southeast, ash has colored the snow surface dark brown. A...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=50684&s...

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earthobservatory.nasa.gov 23 May '11, 10pm

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earthobservatory.nasa.gov 24 May '11, 6pm

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earthobservatory.nasa.gov 23 May '11, 7pm

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Grímsvötn, Volcano Injects Ash into the Stratosphere [image] #NASA

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earthobservatory.nasa.gov 25 May '11, 7pm

Grímsvötn, the most active of Iceland’s volcanoes, began erupting around 5:30 p.m. local time on Saturday, May 21, 2011. T...

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