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This animation shows the simulated ground motion of the Earth’s surface that could occur in the central U.S. region for a magnitude 7.7 strike-slip earthquake on the southern section of the New Madrid seismic zone.
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16 Ιουλ 2024 · Researchers have mapped out three currently active ancient fault lines — fissures in the Earth’s crust — in the New Madrid area that formed around 500 million years ago, at a time when the North American plate tried and failed to pull itself apart.
29 Σεπ 2022 · New Madrid Seismic Zone hypocenters for the years 2000–2019 are relocated and have a median relative location error of 65 m. Planes are fit to the relocated hypocenters producing a detailed three-dimensional model of fault structure. The Reelfoot fault is segmented by the Ridgely fault.
Expected shaking intensity of a magnitude 7.5 earthquake on the New Madrid central fault. Greens to yellows indicate moderate to strong shaking; oranges to reds indicate severe to extreme shaking and moderate to heavy damage.
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.
24 Ιαν 2014 · LOS ANGELES (AP) — The New Madrid fault zone in the nation’s midsection is active and could spawn future large earthquakes, scientists reported Thursday. It’s “not dead yet,” said U.S. Geological Survey seismologist Susan Hough, who was part of the study published online by the journal Science.
