Friday, March 10 is the anniversary of Long Beach earthquake in 1933, the deadliest California quake in 100 years. The U.S. Geological Survey earthquake forecast maps show the risk of human-activity-induced earthquakes in Oklahoma is now as high as natural occurring earthquakes in California.
In California, the likelihood of a moderate earthquake between magnitude 6.5 and 7.5 has decreased, but the chances of a higher magnitude earthquake in the region has increased. Two earthquake fault lines, the Newport-Inglewood and Rose Canyon, runs between Los Angeles and San Diego could set off a 7.4 magnitude earthquake.
Major earthquakes occur frequently along the west coast of the United States because the region is located on two tectonic plates. The North American plate and the Pacific plate simply crush against each other.
The U.S. Geological Survey (USGS) uses two kinds of scientific models to predict earthquake probability:
1. The earthquake division forecast shows where and when the earth might slip along the state’s many faults.
2. The ground motion prediction model estimates the subsequent shaking given by one of the fault divisions.
A report published Tuesday in the Journal of Geophysical Research by scientists from UC San Diego and Scripps Institution of Oceanography stated: “the fault poses a significant hazard to coastal Southern California. In the past, a lot of people maybe just weren’t concerned about faults that are offshore.
Source: The Orange County Register
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