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The solid straight line in the middle of the New Madrid seismic zone is the surface projection of the modeled fault, which ruptures in the simulation. The colors are keyed to the peak intensity of ground velocity at the surface.
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.
This map shows earthquakes (circles) of the New Madrid and Wabash Valley seismic zones (orange patches). Red circles indicate earthquakes that occurred from 1974 to 2002 with magnitudes larger than 2.5 located using modern instruments (University of Memphis).
Learn how to create your own. This map shows the general area classified as the New Madrid Fault Zone.
(a) Location map of the New Madrid seismic zone (NMSZ), illustrating major faults and approximate earthquake epicenters of the 1811–1812 earthquake sequence. Inset shows location in central...
New Madrid Seismic Zone (NMSZ), region of poorly understood, deep-seated faults in Earth’s crust that zigzag southwest-northeast through Arkansas, Missouri, Tennessee, and Kentucky, U.S. Lying in the central area of the North American Plate, the seismic zone is about 45 miles (70 km) wide and about.
Oct 2, 2019 · Hough believes that this large aftershock occurred around dawn in the New Madrid region near the surface projection of the Reelfoot fault. 1812, January 23, 15:15 UTC, New Madrid, Missouri 9:15 am local time, Magnitude ~7.3. The second principal shock of the 1811-1812 sequence.
