Ash and Lightning above an Icelandic Volcano

Why did a picturesque
>2010 volcanic eruption in Iceland create so much ash?

Although the large
ash plume was not unparalleled in its abundance, its location was particularly
>noticeable because it
>drifted across such well-populated areas.

volcano in southern Iceland began erupting on 2010 March 20,
with a second >eruption starting under the center of a small glacier on 2010 April 14.

Neither eruption was unusually powerful.

The second eruption, however, melted a large amount of
glacial ice which then cooled and fragmented lava into gritty
glass particles that were carried up with the
rising volcanic plume.

Pictured above
during the second eruption,
lightning bolts illuminate
ash pouring out of the Eyjafjallajökull volcano.

Credit & Copyright:
Sigurður Stefnisson