Menu
Forums
New posts
Search forums
What's new
New posts
New profile posts
Latest activity
Vault
Time Travel Schematics
T.E.C. Time Archive
The Why Files
Have You Seen...?
Chronovisor
TimeTravelForum.tk
TimeTravelForum.net
ParanormalNetwork.net
Paranormalis.com
ConspiracyCafe.net
Streams
Live streams
Featured streams
Multi-Viewer
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Navigation
Install the app
Install
More options
Contact us
Close Menu
Forums
Paranormal Forum
Science & Technology
Yellowstone's killer hazard: Active Supervolcano
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Opmmur" data-source="post: 76753" data-attributes="member: 13"><p><span style="font-size: 22px"><strong>Yellowstone's killer hazard: Earthquakes, not eruptions</strong></span></p><p>Becky Oskin LiveScience</p><p></p><p><img src="http://media1.s-nbcnews.com/j/streams/2013/October/131028/8C9519275-131028-yellowstonephoto-hmed-1150a-files.blocks_desktop_medium.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p>National Park Service</p><p></p><p>Yellowstone is an active volcano. Surface features such as geysers and hot springs are direct results of the region's underlying volcanism.</p><p></p><p>DENVER — A supervolcano blasting Yellowstone National Park to smithereens may capture the imagination, but the region's real risk comes from earthquakes, researchers reported here Sunday at the Geological Society of America's annual meeting.</p><p></p><p>"The pervasive hazard in Yellowstone is <a href="http://www.livescience.com/21486-earthquakes-causes.html" target="_blank">earthquakes</a>," said Robert Smith, a seismologist at the University of Utah. "They are the killer events."</p><p></p><p>Smith and his collaborators analyzed 4,520 earthquakes in and around Yellowstone that struck between 1985 and 2013. Their goal: Create the best picture ever of the magma chamber hidden beneath the park's colorful hot springs and spectacular geysers. A side benefit was a better view of the seismic risk from nearby faults. [<a href="http://www.livescience.com/29720-yellowstone-national-park-old-faithful-super-volcano.html" target="_blank">Infographic: Geology of Yellowstone</a>]</p><p></p><p><strong>Constant trembling One of these faults triggered the most destructive earthquake ever recorded in the Rocky Mountains — the deadly magnitude-7.3 Hebgen Lake quake in 1959. The epicenter was about 15 miles (24 kilometers) north of West Yellowstone.</strong></p><p><strong></strong></p><p><strong>Smith said the probability of another magnitude-7 or larger earthquake on one of the major faults near Yellowstone is 0.125 percent. The number reflects the chance an earthquake will occur in any given year, based on past records.</strong></p><p><strong></strong></p><p><strong>The annual probability of a Yellowstone supereruption is a much smaller 0.00014 percent, Smith said.</strong></p><p><strong></strong></p><p><strong><a href="http://www.livescience.com/15214-quick-scenic-tour-wonders-yellowstone.html" target="_blank">Yellowstone National Park</a> is cradled inside a gentle depression created by a giant volcanic eruption 640,000 years ago. The ground collapsed, leaving a bowl-shaped caldera. It was the third in a series of massive eruptions, the first of which exploded 2.1 million years ago.</strong></p><p><strong></strong></p><p><strong>A <a href="http://www.livescience.com/13660-yellowstone-volcano-magma-plume-larger.html" target="_blank">mantle plume</a> (also called a hotspot) feeds Yellowstone's super eruptions. Hotspots are massive rising blobs of hot rock from Earth's mantle, the layer beneath the crust. As the planet's tectonic plates trundle over hotspots, the plumes punch through the crust, forming volcanic chains like Hawaii or the Idaho's Snake River Plain and Yellowstone.</strong></p><p><strong></strong></p><p><strong>In the millennia since the last massive volcanic blowout, magma has again built up beneath Yellowstone. The <a href="http://www.livescience.com/5256-yellowstone-earthquake-swarm-puzzles-scientists.html" target="_blank">park trembles constantly with tiny earthquakes</a> as gas and hot fluids course through underground fractures, escaping from the molten rock below.</strong></p><p><strong></strong></p><p><strong><strong>Beneath YellowstoneLed by graduate student Jamie Farrell, the University of Utah group used these tremors like a CT scan, building a precise image of the underground magma reservoir.</strong></strong></p><p><strong><strong></strong></strong></p><p><strong><strong>However, <a href="http://www.livescience.com/28821-yellowstone-supervolcano-bigger-plume.html" target="_blank">Yellowstone's magma chamber</a> isn't just a giant pool of molten rock. What's called a partial melt — small interconnected zones of magma filling fractures and small spaces — fills 6 to 7 percent of the crust beneath Yellowstone, Smith said. "The Yellowstone crustal reservoir is 250 percent larger than previously imaged," Smith said.</strong></strong></p><p><strong><strong></strong></strong></p><p><strong><strong>The actual volume of molten magma is between 200 to 600 cubic km (50 to 145 cubic miles), he said.</strong></strong></p><p><strong><strong></strong></strong></p><p><strong><strong>The reservoir is shaped like a dog's knobby chew toy, with one end about 9 miles (15 km) below the center of Yellowstone National Park, and the other rising to the northeast, about 3 miles (5 km) below the surface.</strong></strong></p><p><strong><strong></strong></strong></p><p><strong><strong>The shallow end extends 12 miles (20 km) northeast of the caldera rim created 640,000 years ago, Smith said. That distance matches the total tectonic drift of the North American plate over the Yellowstone mantle plume since that time, he said.</strong></strong></p><p><strong><strong></strong></strong></p><p><strong><strong><em>Email </em><a href="mailto:boskin@techmedianetwork.com">Becky Oskin</a><em> or follow her </em><a href="https://twitter.com/beckyoskin" target="_blank">@beckyoskin</a><em>. Follow us</em> <a href="https://twitter.com/#%21/OAPlanet" target="_blank">@OAPlanet</a><em>, </em><a href="http://www.facebook.com/OurAmazingPlanet" target="_blank">Facebook</a><em> and </em><a href="https://plus.google.com/115001017876084075679/posts" target="_blank">Google+</a><em>. Original article on LiveScience's OurAmazingPlanet.</em></strong></strong></p><p><strong><strong></strong></strong></p><ul> <li data-xf-list-type="ul"><strong><strong><a href="http://www.livescience.com/29625-seven-ways-the-earth-changes-in-the-blink-of-an-eye-100809html.html" target="_blank">7 Ways the Earth Changes in the Blink of an Eye</a></strong></strong></li> <li data-xf-list-type="ul"><strong><strong><a href="http://www.livescience.com/29719-yellowstone-yosemite-national-park-photo-gallery-101001.html" target="_blank">Yellowstone and Yosemite: Two of the World's Oldest National Parks</a></strong></strong></li> <li data-xf-list-type="ul"><strong><strong><a href="http://www.livescience.com/12314-scary-scenario-devastating-earthquake-visualized.html" target="_blank">Video: Devastating Earthquake Visualized</a></strong></strong></li> </ul></blockquote><p></p>
[QUOTE="Opmmur, post: 76753, member: 13"] [SIZE=6][B]Yellowstone's killer hazard: Earthquakes, not eruptions[/B][/SIZE] Becky Oskin LiveScience [IMG]http://media1.s-nbcnews.com/j/streams/2013/October/131028/8C9519275-131028-yellowstonephoto-hmed-1150a-files.blocks_desktop_medium.jpg[/IMG] National Park Service Yellowstone is an active volcano. Surface features such as geysers and hot springs are direct results of the region's underlying volcanism. DENVER — A supervolcano blasting Yellowstone National Park to smithereens may capture the imagination, but the region's real risk comes from earthquakes, researchers reported here Sunday at the Geological Society of America's annual meeting. "The pervasive hazard in Yellowstone is [URL='http://www.livescience.com/21486-earthquakes-causes.html']earthquakes[/URL]," said Robert Smith, a seismologist at the University of Utah. "They are the killer events." Smith and his collaborators analyzed 4,520 earthquakes in and around Yellowstone that struck between 1985 and 2013. Their goal: Create the best picture ever of the magma chamber hidden beneath the park's colorful hot springs and spectacular geysers. A side benefit was a better view of the seismic risk from nearby faults. [[URL='http://www.livescience.com/29720-yellowstone-national-park-old-faithful-super-volcano.html']Infographic: Geology of Yellowstone[/URL]] [B]Constant trembling One of these faults triggered the most destructive earthquake ever recorded in the Rocky Mountains — the deadly magnitude-7.3 Hebgen Lake quake in 1959. The epicenter was about 15 miles (24 kilometers) north of West Yellowstone. Smith said the probability of another magnitude-7 or larger earthquake on one of the major faults near Yellowstone is 0.125 percent. The number reflects the chance an earthquake will occur in any given year, based on past records. The annual probability of a Yellowstone supereruption is a much smaller 0.00014 percent, Smith said. [URL='http://www.livescience.com/15214-quick-scenic-tour-wonders-yellowstone.html']Yellowstone National Park[/URL] is cradled inside a gentle depression created by a giant volcanic eruption 640,000 years ago. The ground collapsed, leaving a bowl-shaped caldera. It was the third in a series of massive eruptions, the first of which exploded 2.1 million years ago. A [URL='http://www.livescience.com/13660-yellowstone-volcano-magma-plume-larger.html']mantle plume[/URL] (also called a hotspot) feeds Yellowstone's super eruptions. Hotspots are massive rising blobs of hot rock from Earth's mantle, the layer beneath the crust. As the planet's tectonic plates trundle over hotspots, the plumes punch through the crust, forming volcanic chains like Hawaii or the Idaho's Snake River Plain and Yellowstone. In the millennia since the last massive volcanic blowout, magma has again built up beneath Yellowstone. The [URL='http://www.livescience.com/5256-yellowstone-earthquake-swarm-puzzles-scientists.html']park trembles constantly with tiny earthquakes[/URL] as gas and hot fluids course through underground fractures, escaping from the molten rock below. [B]Beneath YellowstoneLed by graduate student Jamie Farrell, the University of Utah group used these tremors like a CT scan, building a precise image of the underground magma reservoir. However, [URL='http://www.livescience.com/28821-yellowstone-supervolcano-bigger-plume.html']Yellowstone's magma chamber[/URL] isn't just a giant pool of molten rock. What's called a partial melt — small interconnected zones of magma filling fractures and small spaces — fills 6 to 7 percent of the crust beneath Yellowstone, Smith said. "The Yellowstone crustal reservoir is 250 percent larger than previously imaged," Smith said. The actual volume of molten magma is between 200 to 600 cubic km (50 to 145 cubic miles), he said. The reservoir is shaped like a dog's knobby chew toy, with one end about 9 miles (15 km) below the center of Yellowstone National Park, and the other rising to the northeast, about 3 miles (5 km) below the surface. The shallow end extends 12 miles (20 km) northeast of the caldera rim created 640,000 years ago, Smith said. That distance matches the total tectonic drift of the North American plate over the Yellowstone mantle plume since that time, he said. [I]Email [/I][EMAIL='boskin@techmedianetwork.com']Becky Oskin[/EMAIL][I] or follow her [/I][URL='https://twitter.com/beckyoskin']@beckyoskin[/URL][I]. Follow us[/I] [URL='https://twitter.com/#%21/OAPlanet']@OAPlanet[/URL][I], [/I][URL='http://www.facebook.com/OurAmazingPlanet']Facebook[/URL][I] and [/I][URL='https://plus.google.com/115001017876084075679/posts']Google+[/URL][I]. Original article on LiveScience's OurAmazingPlanet.[/I] [/B][/B] [LIST] [*][B][B][URL='http://www.livescience.com/29625-seven-ways-the-earth-changes-in-the-blink-of-an-eye-100809html.html']7 Ways the Earth Changes in the Blink of an Eye[/URL][/B][/B] [*][B][B][URL='http://www.livescience.com/29719-yellowstone-yosemite-national-park-photo-gallery-101001.html']Yellowstone and Yosemite: Two of the World's Oldest National Parks[/URL][/B][/B] [*][B][B][URL='http://www.livescience.com/12314-scary-scenario-devastating-earthquake-visualized.html']Video: Devastating Earthquake Visualized[/URL][/B][/B] [/LIST] [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Paranormal Forum
Science & Technology
Yellowstone's killer hazard: Active Supervolcano
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top