RadioBanter - View Single Post - (OT) 4.2 Quake Epicentered in Ojai,California (60 miles West ofdown

dave · May 9th 09, 04:03 PM posted to rec.radio.shortwave

wrote:
60 miles West of down town Jackson is almost to Monroe/West
Monroe,Cajunland.Thankfully, we hardly ever get any Earthquakes around
here.
''You gotta hit it in the middle if you wanna to get little''
cuhulin

The 1811 or 1812 New Madrid Earthquake is one of the largest successions
of earthquakes, including the most intensive ever indirectly inferred
(not recorded) in the contiguous United States, beginning with an
initial pair of very large earthquakes on December 16, 1811, plus
aftershocks and other large related quakes separated by a succession of
smaller aftershock quakes with the largest event classified as a
Mega-quake of greater than 8.0 on the Richter scale occurring on
February 7, 1812. It got its name from its primary location in the New
Madrid Seismic Zone, near New Madrid, Louisiana Territory (now
Missouri), where a stretch of land five miles (8 km) deep spanning from
Arkansas to Illinois shifted and slipped. The fault is believed to
generate a slip every 250-400 years.[1]

This earthquake was preceded by three other major quakes: two on
December 16, 1811, and one on January 23, 1812. These earthquakes
destroyed approximately half the town of New Madrid. There were also
numerous aftershocks in the area for the rest of that winter with
research indicating a series of some 2,000 earthquakes overall that
affected the lands of what would become eight of today's heartland
states of the United States.[1]

There are estimates that the earthquakes were felt strongly over roughly
130,000 square kilometers (50,000 square miles), and moderately across
nearly 3 million square kilometers (1 million square miles). The
historic 1906 San Francisco earthquake, by comparison, was felt
moderately over roughly 16,000 square kilometers (6,000 square miles).