Yellowstone National Park has been experiencing an unusual string of earthquakes lasting three days in a row, from Saturday to Monday. Although such clusters of earthquakes are fairly common in the area due to Yellowstone’s 10,000 geysers and hot springs, scientists say the recent quakes are far more intense than usual.
From LiveScience:
The largest of the earthquakes was a magnitude 3.9 at 10:15 pm MST on Dec. 27, a day after the swarm began. The sequence has included nine events of magnitude 3 to 3.9 and approximately 24 of magnitude 2 to 3 at the time of this release. A total of more than 250 events large enough to be located have occurred in this swarm.
“Scientists cannot identify any causative fault or other feature without further analysis,” according to the statement.
Most of these temblors would not be felt by humans. Earthquakes generally have to exceed magnitude 4.0 to cause light damage.
Scientists wonder if the shaking might presage a larger event. This month’s swarm is the most intense in this area for some years, scientists said. It is centered on the east side of the Yellowstone caldera, a giant basin created in a colossal eruption some 620,000 years ago.
Researchers have been predicting for decades that the Yellowstone super volcano will eventually erupt once more, blanketing more than half the country with up to three feet of ash. Yellowstone remains very geologically active, and though it is being monitored, those same researchers say there isn’t any evidence that an eruption is imminent.
If it were to blow, humanity might not survive. Geologists say an eruption of the Yellowstone super volcano would dwarf those of Mount St. Helens, Krakatoa and others that have occurred during the last few dozen millenia. Due to the effects on global climate, agriculture would be devastated and many people would starve.
It’s just another uneasy reminder of how fragile our place in the world really is.
Link [LiveScience]
Photo credit: Wikimedia Commons




