Volcanoes

Chile: Dirty thunderstorm shoots lightning from volcano

Paul Simons
The Times
Thu, 08 May 2008 14:01 UTC

Recent pictures of the Chaiten volcano in Chile showing lighting bursting out show a marvellous phenomenon known as volcanic lightning.

The photo of lightning bursting out during a volcanic eruption in Chile, above, was a truly awesome sight. Although the picture seemed to show a thunderstorm colliding with the cloud of volcanic ash, it actually showed a marvellous phenomenon known as volcanic lightning.

Usually, lightning is sparked off by countless tiny pieces of ice inside a turbulent thundercloud banging into one another. Each collision generates static electricity, rather like a balloon rubbed on a jumper.

©Unknown

Scientists find that lightning is good indicator of volcanic activity

EurekAlert
Thu, 29 Mar 2007 08:16 UTC

Although it's been more than a year since Mount Augustine had its memorable eruption, work continues for University of Alaska Fairbanks researchers. The work of Alaska Volcano Observatory employees from UAF's Geophysical Institute will be appearing in the upcoming issue of the journal Science.

The article, which came out on Feb. 23, documents electrical activity that occurred during the January 2006 eruption of Mount Augustine. While it has long been known that volcanic eruptions can produce vigorous lightning, there are few direct observations of the phenomena, states the article. Following the initial eruptions of Jan. 11 and 13, 2006, two of which produced lightning, two electromagnetic lightning detectors were set up in Homer about 60 miles from Augustine. A couple of days later, the volcano erupted again, with the first of four eruptions producing a "spectacular lightning sequence."