YELLOWSTONE: New Study Reveals Link to Past Earthquake Swarms
Mitch Batros - Earth Changes Media
Over the past three years, we've witnessed two large earthquake swarms at Yellowstone - one in 2009 another in 2010. Volcanologists, geologists, and seismologists realize the importance of knowing when the next one will occur. Recent activity tells us earthquake swarms periodically occur, but we would like to know how frequently they have occurred in distant past.
Researcher Bill Evans along with colleagues from United States Geological Survey, Lone Pine Research, and Yellowstone National Park has tracked the effects of swarm activity over the last 25 years. Much of their data comes from the 1978 swarm at Mud Volcano. That intense swarm lasted about 7 months and was followed by increased heat output and dieback of vegetation in an area called "Cooking Hillside."
By comparing the tree rings to present day tree rings and the current amount of CO2 discharge at Yellowstone's Mud Volcano, they concluded that gas discharge more than doubled at the time of the swarm.
FULL ARTICLE - http://bit.ly/vDy7QP
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