geologyMcAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams

Home » Volcanoes » Mount St. Helens

Mount Saint Helens Videos from USGS

Recounting a 30-year history of eruptions and monitoring


Videos released in May, 2010 by the United States Geological Survey.


Mount St. Helens Background



Mount St. Helens is a stratovolcano located in southern Washington, in the western part of the Cascade Mountain Range. It is about 100 miles south of Seattle, Washington and 50 miles northeast of Portland, Oregon. It is an eruptive volcanic cone built up of interlayered ash, pumice, lava flows, volcanic domes and other deposits. It is a young volcano. The first eruptions occurred about 40,000 years ago and it grew in a series of eruptive stages.


Modern Eruptions



The most recent eruption series at Mount St. Helens began on May 18, 1980 at 8:32 AM. This eruption was catastrophic. To date it has been the deadliest and most costly volcanic eruption in the history of the United States. Fifty-seven people were killed and hundreds of square miles of landscape was covered by blast debris, ash, lahars and pyroclastic flows.


The Opportunity for Monitoring



Numerous other eruptions followed and these eruptions were used by researchers to learn more about monitoring volcanies, test equipment and refine monitoring techniques. In the videos at right, United States Geological Survey researchers explain how they learned from the eruptions and what their new information means for future volcanic monitoring efforts.



Find it on Geology.com




More from Geology.com


US Diamond Mines
US Diamond Mines: Did you know that diamonds can be found in the United States?
Homeowners Insurance
Homeowners Insurance usually does not cover the most common geologic hazards.
Gems from Space
Gems from Space A number of materials from space have been used as attractive gems.
Novarupta
Wrong Volcano! The most powerful eruption of the 20th century was misidentified?
Diamonds
Diamonds: Learn about the properties of diamond, its many uses and diamond discoveries.
hurricane names
How Are Hurricanes Named? Names are assigned as tropical storms are discovered.
Garnet
Garnet is best known as a red gemstone. It occurs in any color and has many industrial uses.
Coal
Coal Through a Microscope: Coal is more than a black rock. It's THE most interesting rock.


United States Geological Survey scientists involved in resopnding do the 1980 eruption of Mount St Helens recount their experience, explain the impact of the eruption, its magnitude and what they learned about volcanoes. USGS video.




United States Geological Survey scientists . USGS video.


Diamonds Don't Form From Coal
Largest Oil Spills Map
San Andreas Fault
Igneous, Metamorphic, and Sedimentary Rocks
The Only Diamond Mine in the USA
Marcellus Shale
What is Geology?
Articles About Volcanoes



© 2005-2014 Geology.com. All Rights Reserved.
Images, code and content of this website are property of Geology.com. Use without permission is prohibited. Pages on this site are protected by Copyscape.