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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 similar magnitude followed in January and February ...
15 gru 2017 · Here we show that a significant variation in the rate of microearthquakes in the intraplate New Madrid Seismic Zone at annual and multi-annual timescales coincides with hydrological loading...
9 gru 2019 · On December 16, 1811, and January 23 and February 7, 1812, a series of three earthquakes—the largest in recorded American history east of the Rocky Mountains—occurred near the frontier town of New Madrid, Missouri. each measuring greater than magnitude 7.0.
Earthquakes in the New Madrid and Wabash Valley seismic zones. The zone had four of the largest earthquakes in recorded North American history, with moment magnitudes estimated to be as large as 7 or greater, all occurring within a 3-month period between December 1811 and February 1812.
Between December 16, 1811, and February 7, 1812, seven earthquakes of magnitude 6.0 to 7.5 on the Richter scale and numerous lesser aftershocks ravaged the affected area. They were among the most intense earthquakes in US history and by far the largest to occur east of the Rocky Mountains.
2 paź 2019 · Overview. A Sequence of Three Main Shocks in 1811-1812. This sequence of three very large earthquakes is usually referred to as the New Madrid earthquakes, after the Missouri town that was the largest settlement on the Mississippi River between St. Louis, Missouri and Natchez, Mississippi.
1 sty 2004 · The central and eastern United States has experienced only 5 historic earthquakes with Mw 7.0, four during the New Madrid sequence of 1811-1812: three principal mainshocks and the so-called «dawn aftershock» following the first mainshock.
