One or Two Quakes a Minute at in Washington
Posted: Tue Sep 28, 2004 9:41 am
This is more of a local/regional story but I thought I would post it. We are due East of Mt. St. Helens.
Additional references:
http://www.pnsn.org/HELENS/welcome.html
http://vulcan.wr.usgs.gov/Volcanoes/Cas ... tActivity/
SEATTLE (AP) - Small earthquakes rattled Mount St. Helens at the rate of one or two a minute Monday, and seismologists were working to determine the significance of some of the most intense seismic activity in nearly 20 years.
Carbon dioxide and sulfur gas samples collected above the volcano - which erupted to devastating effect in 1980 - will help scientists figure out what is going on beneath the 925-foot-high dome of hardened lava within the mountain's gaping crater. They want to know whether the quakes are the result of water seeping into the mountain or magma moving under its crater.
In either case, scientists will continue to watch it from the Cascade Volcano Observatory operated by the U.S. Geological Survey in Vancouver, Wash., about 50 miles away.
"But if it's magma, we'll be a lot more nervous," said the observatory's chief scientist Jeff Winn.
Read more: http://apnews.myway.com/article/20040927/D85C9RN80.html
Additional references:
http://www.pnsn.org/HELENS/welcome.html
http://vulcan.wr.usgs.gov/Volcanoes/Cas ... tActivity/
SEATTLE (AP) - Small earthquakes rattled Mount St. Helens at the rate of one or two a minute Monday, and seismologists were working to determine the significance of some of the most intense seismic activity in nearly 20 years.
Carbon dioxide and sulfur gas samples collected above the volcano - which erupted to devastating effect in 1980 - will help scientists figure out what is going on beneath the 925-foot-high dome of hardened lava within the mountain's gaping crater. They want to know whether the quakes are the result of water seeping into the mountain or magma moving under its crater.
In either case, scientists will continue to watch it from the Cascade Volcano Observatory operated by the U.S. Geological Survey in Vancouver, Wash., about 50 miles away.
"But if it's magma, we'll be a lot more nervous," said the observatory's chief scientist Jeff Winn.
Read more: http://apnews.myway.com/article/20040927/D85C9RN80.html