Ash from Grímsvötn spread over the North Sea on May 24, 2011, canceling several hundred flights in Scotland and Scandinavia.
Published May 24, 2011
A burst of high-altitude ash from Eyjafjallajökull Volcano on May 4, 2010, led to another round of flight delays and cancellations in the British Isles.
Published May 6, 2010
Color codes reveal ash layers at different altitudes during eruptions at Eyjafjallajökull Volcano on April 19, 2010.
Published Apr 28, 2010
A concentrated plume of ash from Eyjafjallajökull Volcano rises over a more diffuse cloud of ash, casting a dark shadow on the lower-altitude cloud.
Published Apr 19, 2010
Increased activity at Eyjafjallajökull Volcano caused a new wave of flight cancellations in Ireland and Great Britain in early May 2010.
Published May 5, 2010
In contrast to the explosive eruptions of the previous week, ash emissions from Mount Redoubt became more frequent but confined to lower altitudes on March 30, 2009. The commercial satellite GeoEye-1 captured a high-resolution view of the volcano the same day.
Published Apr 1, 2009
A tan plume of ash arced across northern Europe on April 16, 2010, when this true-color image was acquired.
Published Apr 16, 2010
Days after a large-scale eruption from Chile's Chaiten Volcano on February 19, 2009, volcanic ash lingered on the Patagonian landscape.
Published Feb 25, 2009
Acquired May 22, 2011, this natural-color image shows a plume from Grímsvötn on Iceland.
Published May 24, 2011
