Approximately 5,600 years ago, a large section of Mount Rainier collapsed, creating a debris flow which mixed with volcanic products from an ongoing eruption. This mass of material was subsequently funneled into a series of river channels, overtopping their sides and burying an area where more than 100,000 people now live. Known as the Osceola lahar, this event represented the largest and most wide reaching of its numerous lahars. Although another lahar of this size is unlikely, any future eruption could produce a lahar an order of magnitude smaller, placing tens if not hundreds of thousands of people at risk.
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Graphics of eruption dates are courtesy of the Global Volcanism Program, Smithsonian Institute. volcano.si.edu/
Google Earth imagery used in this video: ©Google
Thumbnail Photo Credit: Hans, Pixabay
0:00 The Most Dangerous Volcano
0:28 Mount Rainier
0:45 The Osceola Lahar
1:03 Path of the Lahar
3:18 A Lahar is Generated
4:05 Conclusion
Негізгі бет Buried by 100 Feet of Mud 20 Miles Away; Mount Rainier's Osceola Lahar
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