Several earthquakes have hit southern California in 2024, one of the areas that has recorded the most earthquakes in the United States.
According to the report ‘The 50-State National Seismic Hazard Model’, the possibility of greater quaking in seismically active regions of California is higher compared to other states. Why is this so?
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Why are there so many earthquakes and tremors in California?
According to the United States Geological Survey (USGS), this region of the country “has been tectonically active since the supercontinent Pangaea broke up approximately 200 million years ago.”
The agency notes that the high incidence of earthquakes in the state is largely due to the fact that it is located near the western edge of the North American plate.
“The juxtaposition of the Pacific and North American plates has formed many faults in California that accommodate lateral movement between the plates. To the north and east of California, the Basin and Range province between the Wasatch Mountains in Utah and the Sierra Nevada Mountains in eastern California is actively spreading and stretching westward.”
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Which areas of the USA are most likely to experience an earthquake?
Although earthquakes cannot be predicted accurately, the National Seismic Hazard Model (NSHM) provides information on the potential seismic risks in the United States.
The NSHM was updated in December of last year for all 50 states using “new science on seismicity, fault ruptures, ground motions, and probabilistic techniques to produce a standard of practice for public policy and other engineering applications.”
After analyzing data conducted by more than 50 scientists and engineers, it has been found that nearly 75% of the United States could experience damaging earthquakes.
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The NSHM shows the potential for more damaging earthquakes along the central and northeastern Atlantic coastal corridor, including the cities of Washington D.C., Philadelphia, New York, and Boston. However, there is a potential for greater shaking in the seismically active regions of California and Alaska.
Here is a map showing where damaging earthquakes are most likely to occur in the United States.
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Map of the areas of the country where damaging earthquakes are most likely to occur.NSHM Servicio Geológico de Estados Unidos (USGS)
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Publish date : 2024-09-07 08:05:00
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