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The 1994 Northridge Earthquake: Magnitude and Aftershocks
Magnitude of the Earthquake
The Northridge earthquake of 1994, which occurred on January 17th, was a moment magnitude 6.7 blind earthquake. The magnitude of an earthquake is a measure of the energy released during the event, and is typically determined by measuring the amplitude and frequency of the seismic waves generated. A magnitude 6.7 earthquake is considered to be a major earthquake, capable of causing significant damage.
Aftershocks
Aftershocks are smaller earthquakes that occur after a larger earthquake. They are caused by the adjustment of the earth's crust to the stresses created by the main earthquake. Aftershocks can occur in the same area as the main earthquake, or they can occur at a distance from the main event. The Northridge earthquake was followed by a series of aftershocks, with the largest aftershock having a magnitude of 5.9.
The Northridge earthquake was a devastating event that caused widespread damage in the San Fernando Valley. The earthquake killed 33 people and injured over 1,000. The damage caused by the earthquake was estimated to be in the billions of dollars. The earthquake also triggered a number of fires, which further contributed to the damage and destruction.
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