Blog Post Image: Threat of Earthquakes Occurring in Central United States Still Alive

A timeline of earthquakes in the New Madrid Seismic Zone (top) differs significantly from a typical aftershock sequence (bottom). A new study shows that earthquakes occurring today in the region are not aftershocks of the 1811-1812 earthquakes. Rather, they are evidence that stress is continuing to accumulate. Data source: CEUS-SSC catalog. Image credit: U.S. Geological Survey (Click image to enlarge)