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


Rocks on Mars
Rocks on Mars: Many of the rocks found on Mars are not very different from Earth rocks.
gem photos
100+ Gems - Photos of over 100 beautiful gems ranging from the popular to the obscure.
Solar System Volcanoes
Solar System Volcanoes: Earth is not the only location of volcanic activity.
Diamonds from Coal
Biggest Misconception: Lots of people think that diamonds form from coal. Not True!
Horizontal Drilling
Horizontal Drilling has opened new resources and significantly improved productivity.
Emerald
Emerald is the most popular green gemstone in the United States and most of the world.
Sliding Rocks
Sliding Rocks Mystery: What causes these rocks to slide across a Death Valley playa?
What is LNG?
What is LNG? The use of LNG as an energy source is growing rapidly. Learn more about LNG.


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.