Αποτελέσματα Αναζήτησης
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.
1 Οκτ 2008 · This model is overly simplistic because New Madrid seismicity continues 30 km southeast of the stepover. In this study we have analyzed 1704 earthquake hypocenters obtained between 1995 and 2006 in three-dimensional (3-D) space to more accurately map fault geometry in the New Madrid seismic zone.
Download Print Version. Earthquakes in the New Madrid Fault Zone. The New Madrid fault zone (NMFZ) is a long-established weakness in the Earth’s crust in the central and eastern US where earthquakes have occurred for hundreds of millions of years.
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 Seismic Zone is made up of reactivated faults that formed when what is now North America began to split or rift apart during the breakup of the supercontinent Rodinia in the Neoproterozoic era (about 750 million years ago).
The New Madrid Seismic Zone (NMSZ) generated a sequence of earthquakes, including three very large (M > 7) mainshocks, in the winter of 1811-1812 and poses a significant seismic hazard to the Central United States (e.g., Johnson and Schweig, 1996; Frankel et al., 1996; Hough et al., 2000; Bakun and Hooper, 2004).
15 Δεκ 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 in...
