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Missouri state geologist Joe Gillman said an earthquake the magnitude of the 1811-12 quakes is expected to happen just once every 500 years. But a moderate quake with a magnitude 6.0 to 6.5 is expected to happen every 90 years, and the last one was in the late 1800s.
Researchers led by a Northwestern University scientist have produced a series of studies — the most recent appearing in the journal Nature two months ago — concluding that the New Madrid zone is shutting down as a generator of major quakes. The hundreds of small temblors that still rumble through the region annually, they say, appear to be nothing more than aftershocks from the massive quakes of 1811-12.
The hundreds of small temblors that still rumble through the region annually
Researchers led by a Northwestern University scientist have produced a series of studies — the most recent appearing in the journal Nature two months ago — concluding that the New Madrid zone is shutting down as a generator of major quakes. The hundreds of small temblors that still rumble through the region annually, they say, appear to be nothing more than aftershocks from the massive quakes of 1811-12.
Originally posted by The Vagabond
reply to post by TheIlluminatedOne
Since when does it take 86 hours to check the seizmos? I can see how it might take 86 hours to forge seizmograph recordings to back up a false explanation though. And when was the last time they told you what street a quake started under? That sounds like a little extra flavor that somebody threw in to create room for argument in case the story came under scrutiny.
"well yeah it was small, but a direct hit- right under main street". if it had been a few feet to the left it would have gone unnoticed like every other 1.5 earthquake in history, but when it's right under mainstreet a 3.0 would have rang a church bell 5,000 miles away.
reply to post by Hawkeyes
Some of you people on here are crazy and just trying to scare other people for no reason.
On official maps of the risk of future seismic shaking, the threat to New Madrid rivals that in the famously shaky western United States. But a few seismologists have argued that the risk to the New Madrid area is past, so residents across hundreds of kilometers from Memphis to New Madrid to St. Louis can lower their guard.
Don't believe such optimism, says an eight-member expert panel convened by the National Earthquake Prediction Evaluation Council, which advises the director of the U.S. Geological Survey (USGS). In a report, USGS announced today, the panel concludes that "the New Madrid Seismic zone is at significant risk for damaging earthquakes." Although some have proposed that the threat is past, the panel continues, "We and most other experts consider this claim unlikely." So construction in the central United States should continue to meet quake-resistant standards.