Monday, February 07, 2005

Anniversary of the Biggest US Quake Ever

Today is the anniversary of the biggest earthquake in the US ever. It didn't happen in California.
New Madrid earthquake of 1811, the strongest series of earthquakes ever felt in America rocked the Mississippi Valley. Devastation was widespread. Scientists predict it will happen again.

[...] The gigantic shake in the early morning of December 16 was only the first in a series of four.

There was a second shock hours later. A third quake rocked the area on January 23 and a fourth -- the biggest of all -- was felt on February 7. Between the major quakes, there were thousands of aftershocks. It is not known how many were killed or injured in the New Madrid Earthquakes, but casualties were probably light. In 1811-1812, the area was sparsely populated. Today, of course, that is far from the case. [...]
It is reported today that Mount Wrangell in Alaska was rocking a bit. Vague, unnamed scientists, apparently in unison, say, "This suggests that the events were triggered by individual pulses within the teleseismic wavetrain."

I think what they mean, but I am not sure, is that:

Energy from the giant Sumatra earthquake traveled 7,000 miles to shake up an Alaska volcano.
The above quote is from Geophysical Institute, University of Alaska Fairbanks

Other interesting articles there like the one on Melting Alaska, with before and after pictures.


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