What areas would be affected by New Madrid earthquake?
Earthquakes that occur in the New Madrid Seismic Zone potentially threaten parts of eight American states: Illinois, Indiana, Missouri, Arkansas, Kentucky, Tennessee, Oklahoma, and Mississippi.
Is the New Madrid Seismic Zone still active?
Earthquake hazard in the New Madrid Seismic Zone remains a concern. There is broad agreement in the scientific community that a continuing concern exists for a major destructive earthquake in the New Madrid seismic zone. Many structures in Memphis, Tenn., St.
What was the New Madrid earthquake sequence?
The 1811-1812 New Madrid sequence consisted of three large earthquakes: M~7.5 on December 16, 1811. M~7.3 on January 23, 1812. M~7.5 on February 7, 1812.
What caused the New Madrid Seismic Zone?
New Madrid earthquakes of 1811–12 Encyclopædia Britannica, Inc. Some Earth scientists suggest that fracturing in this region resulted from stresses brought on by the downcutting of the Mississippi River into the surrounding landscape between 10,000 and 16,000 years ago.
What caused the New Madrid earthquake 1811?
The main shock that occurred at 2:15 am on December 16, 1811, was a result of slippage along the Cottonwood Grove Fault in northeastern Arkansas. It was followed by at least three large aftershocks with magnitudes that ranged from 6.0 to 7.0 over the course of the next 48 hours.
Has the New Madrid Fault ever had a major earthquake?
Damaging quakes have occurred in the New Madrid Zone since then. Two of the strongest include a magnitude 6.0 on January 4, 1843 centered near Marked Tree, Arkansas, and a magnitude 6.6 on October 31, 1895 centered near Charleston, Missouri.
Who predicted the New Madrid earthquake?
Iben Browning
Such measures were prompted by the late Iben Browning, a climatologist and consultant, who predicted 30 years ago that our earthquake alley — the hatchet-shaped, midcontinent New Madrid seismic fault zone — had a 50-50 chance for a big one, a megaquake maybe on the order of the horrific seismic jolts that dismantled …
What would happen if the New Madrid Fault line went off?
Nearly 200 schools and over 100 fire stations would be damaged; 37 hospitals and 67 police stations would be inoperable the day after the earthquake in the state of Missouri. Thousands of bridges would collapse and railways would be destroyed, paralyzing travel across southeast Missouri.
When was the last large earthquake on the New Madrid fault?
New Madrid earthquakes of 1811–12, series of three large earthquakes that occurred near New Madrid, Missouri, between December 1811 and February 1812. There were thousands of aftershocks, of which 1,874 were large enough to be felt in Louisville, Kentucky, about 190 miles (300 km) away.
