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Vote in our Current PollDo you already know how you would vote in the US 2012 presidential election if you could vote? Yes, I would always vote for my political party of choice. 14% Yes, because the current President would be my choice no matter what. 21% No. I'm not tied to any political party and there's plenty of time for actions on issues to change my mind. 43% No. It depends on the Republican candidate chosen. 21% Other (comment below) 0% Total votes: 14 Open Polls |
Earthquake Swarm: Whole Lotta Shakin’ at Yellowstone
Submitted by Newsbyte on Mon, 01/05/2009 - 01:07.
All eyes are on Yellowstone National Park after what’s being called a “swarm” of earthquakes at the scenic spot. The park is located mostly in Wyoming but also stretches into Montana and Idado. Seismologists monitoring the situation say the earthquake sequence is the most intense in this area in years. Over the last nine days, more than 500 earthquakes have been recorded beneath Yellowstone Lake. The largest was on December 27 and measured 3.9 on the Richter scale. The most recent one was a 2.6 tremor on Friday night. No damage has been reported inside the park, which experts say is to be expected from earthquakes of this size. The Yellowstone Volcano Observatory* is monitoring the “unusual earthquake sequence” that started on December 26. It reports that more than 300 of the quakes have been reviewed and evaluated by seismic analysts. Depths of the earthquakes range from less than one mile to six miles below the surface. Analysts say the earthquakes extend northward from central Yellowstone Lake for anout six miles toward the Fishing Bridge area, with a migration of the most recent earthquakes toward the north. The swarm area is known for its earthquake activity and is not far from the park’s famous hydrothermal activity region, home to the Old Faithful Geyser, one of the most popular attractions at Yellowstone. Earthquakes are common at Yellowstone, an active volcanic-tectonic area averaging 1,000 to 2,000 earthquakes a year. The park’s 10,000 geysers and hot springs are the result of this geologic activity. Similar earthquake swarms have happened before without triggering steam explosions or volcanic activity, but analysts say there is some potential for hydrothermal explosions and the earthquakes may continue or increase in magnitude. However, they say there is a much lower potential for related volcanic activity. *The Yellowstone Volcano Observatory is a collaboration of the U.S. Geological Survey, Yellowstone National Park, and the University of Utah. Source: |
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