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The New Madrid Seismic Zone (NMSZ), sometimes called the New Madrid Fault Line, 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. The New Madrid fault system was responsible for the ...
New Madrid fault and earthquake-prone region considered at high risk today. 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 ...
The 1968 Illinois earthquake (a New Madrid event) [ 4 ] was the largest recorded earthquake in the U.S. Midwestern state of Illinois. Striking at 11:02 a.m. on November 9, it measured 5.3 on the Richter scale. [ 5 ] Although no fatalities occurred, the event caused considerable structural damage to buildings, including the toppling of chimneys ...
Earthquake predictionis a branch of the science of seismologyconcerned with the specification of the time, location, and magnitudeof future earthquakeswithin stated limits,[1][a]and particularly "the determination of parameters for the nextstrong earthquake to occur in a region".[2] Earthquake prediction is sometimes distinguished from ...
Locations of quakes magnitude 2.5 or greater in the Wabash Valley (upper right) and New Madrid (lower left) Seismic Zones. The Wabash Valley Seismic Zone (also known as the Wabash Valley Fault System or Zone) is a tectonic region located in the Midwestern United States, centered on the valley of the Lower Wabash River, along the state line between southeastern Illinois and southwestern Indiana.
An intraplate earthquake is an earthquake that occurs in the interior of a tectonic plate, in contrast to an interplate earthquake on the boundary of a tectonic plate. It is also called an intraslab earthquake, especially when occurring in a microplate. [ 1 ][ 2 ] Intraplate earthquakes are relatively rare compared to the more familiar ...
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40,000–50,000 deaths. The 1755 Lisbon earthquake, also known as the Great Lisbon earthquake, impacted Portugal, the Iberian Peninsula, and Northwest Africa on the morning of Saturday, 1 November, Feast of All Saints, at around 09:40 local time. [ 3 ] In combination with subsequent fires and a tsunami, the earthquake almost completely ...