Disasters Strike is a blog pertaining to geological hazards and the destruction they can cause. New information in the geology field, examples of geological hazards, and mitigation techniques will be explored.
Wednesday, February 23, 2011
Potential Earthquakes in Eastern US
Have you ever experienced the ground shaking from an earthquake? Scientists are concerned that there is a potential for a major earthquake in the future of the Mississippi Valley. This area is the New Madrid seismic zone. Severe ground shaking would occur in areas such as Memphis and St. Louis. It has been brought to the media's attention because some scientists believe that the stress on the Earth in this zone has been decreased and therefore the zone is being shut down.
The evidence for this predicted earthquake is based on decades of research in the area. They have found evidence from the geologic record and Global Positioning System (GPS) data.
In the years of 1811-1812, 3 major earthquakes were recorded of magnitudes 7.7, 7.5, and 7.7. For more information on what these magnitudes mean click here. These past earthquakes are a good indication that there will be more in the area.
Research shows that there will be large future earthquakes in the area and people should be prepared. Building codes are required to help lessen the blow of a major earthquake on both public safety as well as potentially decreasing the economic strain in the region after an earthquake occurrs. People need to be aware of this high potential hazard as well.