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The 1811–1812 New Madrid earthquakes were a series of intense intraplate earthquakes beginning with an initial earthquake of moment magnitude 7.2–8.2 on December 16, 1811, followed by a moment magnitude 7.4 aftershock on the same day. Two additional earthquakes of similar magnitude followed in January and February 1812.
The New Madrid seismic zone (NMSZ), sometimes called the New Madrid fault line (or fault zone or fault system), is a major seismic zone and a prolific source of intraplate earthquakes (earthquakes within a tectonic plate) in the Southern and Midwestern United States, stretching to the southwest from New Madrid, Missouri.
An undated photo from the US Geological Survey depicts a landslide trench and ridge in the Chickasaw Bluffs, east of Reelfoot Lake, Tennessee, resulting from the 1811 to 1812 New Madrid earthquakes.
The inclusion criteria for adding events are based on WikiProject Earthquakes' notability guideline that was developed for stand alone articles. The principles described are also applicable to lists. In summary, only damaging, injurious, or deadly events should be recorded.
Historical earthquakes is a list of significant earthquakes known to have occurred prior to the early 20th century. As the events listed here occurred before routine instrumental recordings — later followed by discoveries of Earth's tectonic plates, [1] seismotomography imaging technique, [2] observations using space satellites from outer space, [3] artificial intelligence (AI)-based ...
In 1811–1812, a series of large earthquakes occurred on the rift, causing great devastation. [ 2 ] Martin and Hough postulated three different plausible events, a north-northwest rupture from Henson Lake to Charleston, a northeast rupture on the western boundary faults of the Reelfoot Rift, or north-northeast or north-northwest rupture within ...
Bigger earthquakes have more and larger aftershocks and the sequences can last for years or even longer especially when a large event occurs in a seismically quiet area; see, for example, the New Madrid seismic zone, where events still follow Omori's law from the main shocks of 1811–1812. An aftershock sequence is deemed to have ended when ...
While Bradbury was returning from the Astor Expedition to New Orleans he was near at Chicksaw Bluffs (future site of Memphis, Tennessee on 16 December 1811, on the Mississippi River when the first of three earthquakes known as the New Madrid earthquake occurred. His first person account is reported as the only eyewitness account of the ...