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Credit & Copyright: Dan Dzurisin,
Cascades Volcano Observatory,
USGS
Explanation:
A new rock slab is growing at more than one meter a day on the
Mt. St. Helens volcano in
Washington,
USA.
The rock slab, growing since last November, now extends about 100 meters out from
one of the volcano's craters.
A recently made time lapse movie shows the
rock slab growing.
Pictured
above, a
helicopter examines
the
steaming hot rock slab late last month.
Mt. St. Helens underwent
a
spectacular eruption in 1980 but has been undergoing a
comparatively serene eruption since 2004 September.
A new volcanic dome has been building which is now about 100 meters above the
1980s dome.
The rock slab is visible from the Johnson Ridge Observatory on the
erupting volcano.
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: volcano
Publications with words: volcano
See also: