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Earthquakes in the New Madrid and Wabash Valley seismic zones from 1974 to 2002, with magnitudes larger than 2.5. 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. Many of ...
The Guy–Greenbrier earthquake swarm occurred in central Arkansas beginning in August 2010. [2] The epicenters of earthquakes in the swarm showed a linear distribution, with a clear overall shift in activity towards the southwest with time, [3] and the largest event in the swarm was the 2011 Arkansas earthquake, at 4.7 on the moment magnitude scale.
The capital city of Arkansas, Little Rock, would also face damage. [4] A major natural gas pipeline is located near the fault, and could be devastated by any such earthquake. [1] Tennessee and Mississippi would possibly be affected as well. [6] In 2006, a letter to the Seismological Research Letters indicated the possible existence of a fault ...
The color-coded map shows a range of earthquake probability across the U.S. Well known high-risk areas, such as California and Alaska, are coded in dark red, denoting the highest risk.
The Introduction to The Lost History of the New Madrid Earthquakes by Conevery Bolton Valencius. The New Madrid Fault Zone (NMFZ) Archived December 19, 2008, at the Wayback Machine (links to maps, history, predictions, etc. from the Arkansas Center for Earthquake Education)
1979 Imperial Valley earthquake – magnitude 6.4 earthquake with an epicenter less than 1 km inside Mexico – significant damage and injuries on both sides of the border (60 in the US) 2010 Baja California earthquake (Mexico near S California) – magnitude 7.2 earthquake, 4 fatalities and 100 injuries, none in the United States
According to the USGS, "ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes. These maps are used by federal, state, and local organizations, both public and private, for post-earthquake response and recovery, public and scientific information, as well as for preparedness exercises and ...
The Enola earthquake swarm was a series of earthquakes in 2001 that centered on Central Arkansas. It follows the earthquake swarms of Arkansas in the 1980s, and predates the Guy-Greenbrier earthquake swarm that started in 2010. [1] The earthquake sequence started with a 4.4 magnitude main shock and 2,500 earthquakes followed in the next 2 ...