Hello and welcome to CoreFacts, where we're always short on
time and big on science. I'm Steve Sobieszczyk. Today we're going to mix some
science and history.
What volcanoes have erupted in the lower 48 States since the Nation was
founded?
Since 1776, there have been more than a dozen periods of
eruptive activity by at least one of the volcanoes from the Cascade
Range. The most active volcano has been Mount
St. Helens, which erupted multiple times including in the late
1700's, 1800 to 1857, 1980 to 1986, and 2004 to basically now. Lassen Peak, in California, erupted
between 1914 and 1917. Mount Rainier erupted
in the early 1800's and again in 1894. Mount Hood, in Oregon, erupted in the late 1700's and again
between 1856 and 1865. Mount Shasta, in California,
erupted in 1786. Glacier Peak was volcanically
active from the 1600's through the 1700's. And lastly, Mount Baker, in Washington, was active
between 1840 and 1870, with some steam emissions present in 1975 and later.
And now you know. Join us every weekday for a new CoreFact.
If you have a question you think we should answer on the air, email it to us at
corefacts@usgs.gov or leave us a
voicemail at 703-648-5600; long distance fees do apply.
The USGS CoreFacts is a product of the U.S. Geological
Survey, Department of the Interior.
A CoreFact is a weekly audio podcast from the USGS that asks and answers a natural science question. When you subscribe to CoreFacts, episodes will be automatically downloaded to your computer as soon as they're available.
Huh? What's a Podcast?
A podcast is an audio (e.g. mp3) or video file (e.g. mpeg) that can be played
on a mobile media player (i.e. Apple iPod)1 or
personal computer.2
So, How Do I Listen/Watch?
You can subscribe to CoreFacts via RSS
feed1 (click for details), or you can listen to individual
CoreFacts by selecting the play button next to the episode you’re interested
in. When you subscribe to CoreFacts, each episode will automatically download
to your computer as soon as they become available. Some specific instructions can be found on our Adding a Podcast page.
1 Make sure you have the right software
to download CoreFacts from a computer to your mobile media player—this software
usually comes with the player. 2 To play CoreFacts on your computer, you will need media
player software such as: iTunes, Windows
Media Player, or Real
Media Player.
Most computers already have media player software installed—check
with your computer administrator to see if you’re already set up for CoreFacts!
508 Compliance
Every episode is transcribed and can be viewed in the Show Details section.
All links to Web sites or data referenced in the show are included.