Why Might the New Madrid Area Be at Risk for More Earthquakes?

By Michael Ferguson

The New Madrid area, located in the central United States, is known for its seismic activity. This region is susceptible to earthquakes due to its location on a fault line that runs through the area. In addition, the area’s geology and history of earthquakes make it a high-risk zone for future seismic events.

Geology of the New Madrid Area

The New Madrid area sits atop the New Madrid Seismic Zone (NMSZ), which is a series of faults that run through the region. These faults are responsible for the earthquakes that have occurred in this area in the past. The NMSZ is unique because it is not located on a plate boundary like many other seismic zones around the world.

History of Earthquakes in the New Madrid Area

The most significant earthquakes in U.S. history occurred in the New Madrid area between 1811 and 1812. These quakes were estimated to be around magnitude 7-8 on the Richter scale and were felt across much of North America. Since then, there have been several smaller earthquakes in this region, with magnitudes ranging from 2 to 5 on the Richter scale.

Increased Risk of Future Earthquakes

Scientists believe that there is an increased risk of future earthquakes in the New Madrid area due to several factors. One factor is that stress has been building up along fault lines in this region for over 200 years since the last significant earthquake occurred. This means that there is a higher likelihood that an earthquake will occur soon.

Another factor is that human activities such as oil and gas drilling, wastewater disposal, and construction can trigger earthquakes by changing underground pressure and stress conditions. These activities are common in the New Madrid area, which can increase earthquake risk.

Conclusion

In summary, while it’s impossible to predict exactly when the next earthquake will occur in the New Madrid area, the combination of geological factors and human activities make it a high-risk zone for future seismic events. It’s important for residents and businesses in this region to be prepared for earthquakes by having emergency plans in place and understanding the risks associated with living in an earthquake-prone area.