December 31, 2008
As Yellowstone geologists explain,
"Precursors to volcanic eruptions include strong earthquake swarms and rapid ground deformation and typically take place days to weeks before an actual eruption."
Since 1975, when geologists discovered that Yellowstone caldera had risen 28 inches in 50 years, the caldera has been closely monitored. Since 2004 the uplift accelerated to 3 inches per year.
It has been about 640,000 years since the last major eruption. Time for another burp?
(Update: my father-in law who is a geologist says, probably not. He says the earthquakes in the current swarm are small potatoes.)Posted by David at December 31, 2008 08:32 AM
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