Originally posted by zenn
do they have legitimate siezmographic charts showing an increase of both frequency and intensity at yellowstone? If so, even though I am not expert by any stretch, it surely would indicate a need to release some energy, and unfortunately, that area has had some catastrophic levels of energy releases in the past.
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The USGS has several sites specifically related to Yellowstone.
Historically Yellowstone has always been seismically active. When the first survey team went in[1870's] they called their camp "camp earthquake". Typically in a year, there can be 1,000's of small quakes. They only count those of 2.5 or higher.
Scientists also have figured out why the domes keep rising and falling. It's related to ground water movement.
The last known energy release was approx. 70,000 YA. there are fossil magma flows attesting to this. The last known full scale eruption was 640,000 YA. It spit out 300 cubic miles of ash and rock. And no, that number isn't an error, actually its a more conservative est.