Volcano WebLessons
Mount St. Helens || Real-time Seismogram Displays || Currently Active World Volcanoes || Basic Fault Information || Basic Volcano Information ||
 
 

Mount St. Helens - Current Volcanic Activity

Harmonic tremor - Continuous rhythmic earthquakes in the Earth's upper lithosphere that can be detected by seismographs. Harmonic tremors often precede or accompany volcanic eruptions.

Cascade Range Current Update - U.S. Geological Survey, Vancouver, Washington and University of Washington, Pacific Northwest Seismograph Network, Seattle, Washington

Mount St. Helens National Volcanic Monument - OUTSTANDING US Dept of Agriculture Forest Service site

Mount St. Helens VolcanoCam - Live photos from Mount St. Helens

Current Alerts for US Volcanoes - Cascade Range - USGS

Cascade Volcano Eruptions Locations and 4,000 year Eruption Summary - This is a gif we have used in class

Real-time Seismogram Displays - PNSN Webicorders from The Pacific Northwest Seismograph Network -
Be sure to check the JCW SHZ UW -- : Jim Creek, WA (Seismogram located just outside Arlington)

Cascade Range Volcanoes

Washington is home to five major composite volcanoes or stratovolcanoes (from north to south): Mount Baker, Glacier Peak, Mount Rainier, Mount St. Helens, and Mount Adams. These volcanoes and Mount Hood to the south in Oregon are part of the Cascade Range, a volcanic arc that stretches from southwestern British Columbia to northern California. All Washington volcanoes except Mount Adams have erupted within the last 250 years. However, the volcanoes do not erupt at regular intervals, thus making it difficult to forecast when a given volcano might come to life again. Although worldwide the risks from volcanoes are significantly lower than risks from earthquakes and landslides, the relatively long recurrence interval for volcanic hazards (decades to several centuries) combined with their great potential for destruction make them particularly insidious. (See Mount Adams, Mount Baker, Glacier Peak, Mount Rainier, and Mount St. Helens below)

Visit A Volcano - Cascade Range Volcanoes - Use the Interactive Imagemap to take a virtual tour of a volcano in the Cascade Range. Mount St. Helens National Volcanic Monument

Volcanoes and History: Cascade Range Volcano Names - Where did Washington's volcanoes get their names?

America's Volcanic Past: Washington State - Many resources about Washington's volcanoes including: Potentially Active Volcanoes of the Western USA; Washington State: A Brief Geologic History

U.S. Geological Survey Fact Sheets (printed PDF version): What Are Volcano Hazards? || Volcanic Ash Fall-A "Hard Rain" of Abrasive Particles || Living With Volcanic Risk in the Cascades || Mount St. Helens – From the 1980 Eruption to 2000 || Mount Baker--Living With An Active Volcano || Glacier Peak--History and Hazards of a Cascade Volcano || Mount Rainier -- Learning to Live with Volcanic Risk
 
Washington DGER: Volcanoes - Overview of Cascade Range Volcanoes with separate site for each of Washington's volcanoes
 

Mount St. Helens

Mount St. Helens is a Strato Volcano

Monitoring Mount St. Helens Volcano - An Introduction - Volcano monitoring involves a variety of measurements and observations designed to detect changes at the surface of a volcano that reflect increasing pressure and stresses caused by the movement of magma, or molten rock, within or beneath it.

CVO Menu: Mount St. Helens, Washington - Main page for Mount St. Helens information from USGS/Cascades Volcano Observatory, Vancouver, Washington

NOAA Images - The Eruption of Mount Saint Helens - Slideshow of the 1980 eruption

Principal Types of Volcanoes - Geologists generally group volcanoes into four main kinds--cinder cones, composite volcanoes, shield volcanoes, and lava domes. Includes great diagrams of each type.

Photo Glossary of Volcano Terms - A picture speaks a thousand words. Learn volcano terms with images and photos.

Eruptions of Mount St. Helens: Past, Present, and Future - Web-book written in 1984. Includes photos and information from USGS

Mount St. Helens VR Tour
 
Mount St. Helens - A General Slide Set - Slide presentation with notes.
 
Mount St. Helens Seismicity Information - In addition to locating regional earthquakes, the Pacific Northwest Seismograph Network (PNSN), in cooperation with the Cascades Volcano Observatory, is also responsible for monitoring seismic activity at volcanoes in the Pacific Northwest. The PNSN currently operates seismometers on or near Mount Baker, Mount Rainier, Mount St. Helens, Mount Adams, Mount Hood, Three Sisters, and Crater Lake (PNSN station map).
 
Mount St. Helens [USGS] - Eruptions of Mount St. Helens: Past, Present, and Future - U.S. Geological Survey - online edition of a book.
 
Mount St. Helens - U.S. Geological Survey - Information page about Mount St. Helens - very complete resource

Mount St. Helens - The many faces of Mount St. Helens - A native Washingtonian's look at the reawakening of Mount St. Helens

Basic Fault Information

Basic Fault Information: Fault Motion Animations - These animations are very elementary examples of fault motion intended for simple demonstrations. For more about faults see the NOAA slide show and information page - a rich source of images and textual information. from IRIS ( Incorporated Research Institutions for Seismology) is a university research consortium dedicated to exploring the Earth's interior through the collection and distribution of seismographic data. Support for IRIS comes from the National Science Foundation, other federal agencies, universities, and private foundations.

Advanced: NOAA/National Geophysical Data Center Images - Faults - More indepth information

Volcano Lessons

Annenberg/CPB Exhibits Volcanoes -- Can We Predict Volcanic Eruptions - Interactive lesson

Vocabulary - What does it mean??? --- Volcanic Terms - from Volcano World || Photo Glossary of Volcanic Terms - from USGS || Glossary - from USGS Learning Web
Predicting Volcanic Eruptions - Outstanding interactive lessons on how volcanic eruptions are predicted.
 
Volcano Monitoring Overview - Be sure to read: Taking A Volcano's Pulse - explains 5 main tools used to predict: Seismicity, Ground Movements, Geophysical Properties, Gas Geochemistry, and Hydrologic Regime. For additional information: Volcano and Hydrologic Monitoring
 
Parts of a Volcano - Cross-section shows the parts of a volcano.
Types of Volcanoes - Mount St. Helens is a Strato Volca

Volcanic Eruption Scale - How BIG are Volcanic Eruptions? Every year about 60 volcanoes erupt, but most of the activity is pretty weak. How do volcanologists measure how big an eruption is?

 

General Volcanology Information

 
Ask a Volcanologist - Read through the archives of common questions people ask volcanologists. If you still can't find the answer to your question, you can ask a question of your own
Dante's Peak FAQs - General questions about volcanoes and volcanologists, movie fact or fiction?, questions about eruption precursors, volcano monitoring, and volcano hazards
Earth's Active Volcanoes - World Map with 12 regions. When a region is clicked on, specifics come up.
 
Miscellaneous Volcanic Facts, Questions, and Answers - Check out "General Volcano Information" and "Volcanic Features and Phenomena
 

 

Volcano World -- Premier Source of Volcano Info on the Web - Outstanding resource for kids interested in learning about volcanoes. Contains real-time volcano information including an interactive clickable map of active volcanoes worldwide and remote sensing satellite images. Volcano World Starting Points

Volcanoes Online - Your Ultimate Guide to Volcanoes - CyberSurfari entry designed to educate students about volcanoes; what it is, how they are formed, and how eruptions effect us all. Online games and multiple-choice quizzes. Interactive map of active volcanoes worldwide, lesson plans, etc. Outstanding resource for kids interested in learning about volcanoes. Interactive map of active volcanoes worldwide. How volcanoes work, submarine volcanoes, planetary volcanoes, etc., "kids' door", lesson plans and "Ask a Volcanologist" page

Ask a Volcanologist - Read through our archives of common questions people ask volcanologists. If you still can't find the answer to your question, you can ask a question of your own.

How BIG are volcanic eruptions? - There is not any single feature that determines the 'bigness', but the following eruption magnitude scale - called the Volcanic Explosivity Index or VEI - is based on a number of things that can be observed during an eruption.
Miscellaneous Volcanic Facts, Questions, and Answers - Check out "Cascade Range Volcanoes"
 
Update on Current Volcanic Activity - from Volcano World
 
Volcano Observatories - Michigan Technological University Volcanoes Page - Volcano Links - Online Observatories
 
Washington State Volcanoes and Volcanic Areas -

Cascade Range Volcanoes - Interactive Image Map -

Active and Potentially Active Volcanoes in the Cascade Range -

Cascade Range Volcanoes - Miscellaneous Volcanic Facts, Questions, and Answers - Living with volcanoes -

Cascades Volcano Observatory HOME PAGE - U.S. Geological Survey's Cascades Volcano Observatory (Federal agency) Reliable & timely warnings of volcanic hazards. USGS established a permanent regional office at Vancouver, WA, after the 1980, eruption to monitor Mount St. Helens continuing activities
 
Cascade Volcano Observatory Photo Archives http://vulcan.wr.usgs.gov/Photo/framework.html
 
CVO's BIG-List of Volcano and Earth-Science-Ori - USGS/Cascades Volcano Observatory, Vancouver, Washington Big List of Volcano and Earth-Science-Oriented Servers
CVO Photo Archives - VolcanoCams around the World - Includes Washington's Mount St. Helens & Mt. Rainier; Oregon's Mt. Bachelor, Crater Lake, Mt. Hood, Mt. Jefferson; Several in California and Hawaii, as well as others from around the world.
 
Cost of Volcanic Eruptions - How much does an eruption cost the government, private companies, and local residents? Here are a couple of estimates for the May 18, 1980 eruption of Mount St. Helens and others.
  
Earth's Active Volcanoes - World Map with 12 regions. When a region is clicked on, specifics come up.
Volcanoes in the Learning Web - USGS's (U.S. Geological Survey) Volcano Volcanic eruptions are among the Earth's most powerful and destructive forces. Imagine hearing a volcano erupt thousands of miles away. Imagine looking through binoculars and seeing the top of a mountain collapse. Imagine discovering an ancient Roman city that had been buried in volcanic ash. Visit a volcano observatory. Travel to the Cascades. Explore the volcanoes of Hawaii and Alaska. Learn about the USGS's Volcano Hazards Program. Don't miss: Make Your Own Paper Model of a Volcano - Watch a Quicktime movie of a volcano erupting

Volcanoes -- Introduction - Can we predict how and when they will erupt? As population grows, more people are living in potentially dangerous volcanic areas. Mt. Rainier looms over the Seattle/Tacoma area, endangering a population of more than three million people...

Volcanoes Modules Page - Decide 1.) whether to build a new high school in the shadow of Mt. Rainier, 2.) what prospects are for the population near Kilauea, 3.) what should be done in the Portland area when Mt. Hood starts acting like Mount St. Helens, 4.) if we are facing an eruption in Yellowstone as devastating as a nuclear attack.

Volcanoes Online - Your Ultimate Guide to Volcanoes - CyberSurfari entry designed to educate students about volcanoes; what it is, how they are formed, and how eruptions effect us all. Online games and multiple-choice quizzes. Interactive map of active volcanoes worldwide, lesson plans, etc. Outstanding resource for kids interested in learning about volcanoes. Interactive map of active volcanoes worldwide. How volcanoes work, submarine volcanoes, planetary volcanoes, etc., "kids' door", lesson plans and "Ask a Volcanologist" page.

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Currently Active World Volcanoes

Current Volcanic Activity -
 
Worldwide Earthquake Activity in the Last Seven Days -
 
Monitoring Active Volcanoes - This on-line edition contains the text from the original book in its entirety. Some figures have been modified to enhance legibility at screen resolutions. The printed version of this publication is one of a series of general interest publications prepared by the U.S. Geological Survey to provide information about the earth sciences, natural resources, and the environment.
 
SSEC - Volcano Watch Satellite Images - These satellite images show the world's 10 most active volcanoes, as determined by the Michigan Tech Geology Department. The Java animations contain the last four satellite images. Updated every half hour.
 
Volcano Cam - New Zealand Volcanoes,  updates,  and pictures of active volcanoes. You can access the Volcano Cam to get a look at the real thing!
 
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This is a large site with navigation in a left frame. If it is missing go to Mrs. Barnard's Classroom Launcher.
Contact Paula Barnard at Pioneer Elementary School, Arlington Public Schools, Arlington, WA, USA
Updated 09/28/2012