Volcano Activity

Volcano Activity - Politics, Business, Civil, History - Posted: 8th Jul, 2017 - 12:40pm

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Predicting eruption
28th Sep, 2004 - 4:32am / Post ID: #

Volcano Activity

Mount St. Helens may be getting more active…

international QUOTE
U.S. Geological Survey, Vancouver, Washington
University of Washington, Pacific Northwest Seismograph Network,
Seattle, Washington

Mount St. Helens Notice of Volcanic Unrest

September 26, 2004 3:00 P.M., PDT

Seismic activity at Mount St. Helens has changed significantly during the past 24 hours and the changes make us believe that there is an increased likelihood of a hazardous event, which warrants release of this Notice of Volcanic Unrest. The swarm of very small, shallow earthquakes (Less than Magnitude 1) that began on the morning of 23
September peaked about mid-day on 24 September and slowly declined through yesterday morning. However, since then the character of the swarm has changed to include more than ten larger earthquakes
(Magnitude 2-2.8), the most in a 24-hr period since the eruption of
October 1986. In addition, some of the earthquakes are of a type that suggests the involvement of pressurized fluids (Water and steam) or perhaps magma. The events are still occurring at shallow depths (Less than one mile) below the lava dome that formed in the crater between
1980 and 1986.


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Post Date: 28th Sep, 2004 - 5:49am / Post ID: #

Volcano Activity
A Friend

Activity Volcano

Boy am I glad that I am out of Oregon! First the earthquakes and now Mt. St. Helens to erupt again. Sheesh! The earth isn't supposed to Shake, Rattle and Roll. laugh.gif

9th Jun, 2005 - 3:39am / Post ID: #

Volcano Activity History & Civil Business Politics

Here's another big one getting active again. 100 year cycles?

Source

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SAN MARCOS, Mexico - The Volcano of Fire has rumbled back to life with its strongest eruptions in 20 years, spewing lava and ash clouds that had some residents who remained in their homes Wednesday casting nervous glances at the peak.

... Snip ...

"I think that we"Re seeing something similar to what occurred a century ago," said Dominguez, of the University of Colima. "We are comparing it to 1903, when there were more than 200 explosions in one year."

"It's possible that we will see another one like 1913 in the coming decade," he added.

Federal Civil Protection Coordinator Carmen Segura headed to the volcano zone Wednesday and said officials planned to improve their monitoring.


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6th Jun, 2011 - 8:03pm / Post ID: #

Activity Volcano

Source 5
These are some amazing photos of a volcano erupting in Chile, The Puyehue-Cordon Caulle volcanic chain. The lightning is incredible, and seeing the ash on the ground as thick as snow is just crazy.


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Post Date: 7th Jun, 2011 - 12:30am / Post ID: #

Volcano Activity
A Friend

Activity Volcano

Yes the photos of the ash plume and the lightning was really amazing to look at. I think it was real interesting to know that the plume could do something like that.

Post Date: 25th Jun, 2016 - 12:04pm / Post ID: #

NOTE: News [?]

Volcano Activity

Volcanoes get quiet before they erupt


Until now, there has not been a way to forecast eruptions of restless volcanoes because of the constant seismic activity and gas and steam emissions. Volcanologists have shown that periods of seismic quiet occur immediately before eruptions and can be used to forecast an eruption. The duration of the silence can indicate the level of energy that will be released. Longer quiet periods mean a bigger bang. Ref. Source 8v.

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Post Date: 8th Jul, 2017 - 12:40pm / Post ID: #

NOTE: News [?]

Volcano Activity

Falling sea level caused volcanoes to overflow. During the transition to the last ice age approximately 80,000 years ago global temperature declined, while the carbon dioxide content of the atmosphere remained relatively stable. Scientists have now discovered that a falling sea level may have caused enhanced volcanic activity in the ocean, which can explain the anomaly. Source 1l.


 
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