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A major fault started in Southern California that could cause a strong earthquake

Marina Bogdanova
18.10.2019

According to a new study, this happens for the first time in 500 years. The study showed that the Garlock fault, extending from east to west for 185 miles from the San Andreas fault to the Death Valley, narrowed by 0.8 inches since July. This is the first documented movement in modern history.

- It's amazing. We have never seen a Garlock fault change somehow. Now he has suddenly changed his behavior, ”said Zachary Ross, assistant professor of geophysics at the California Institute of Technology.

“We don't know what that means,” he added.

seismometer

Satellite images show that the movement of the fault began after the strongest earthquake in two decades struck Southern California. An earthquake of magnitude 6.4 rocked the Mojave Desert about 120 miles north of Los Angeles before an earthquake of magnitude 7.1 occurred the next day in addition to more than 100,000 aftershocks.

Zachary Ross has developed automated computer analysis of seismometer data to detect a huge amount of tremors with accurate location information.

Interestingly, an earthquake of magnitude 6.4 simultaneously broke the faults at right angles to each other, which is considered surprising.

The results were published the same day when Governor Gavin Newsome announced the launch of the Shakealert earthquake early warning system.

The ShakeAlert system has been developed over the years by the US Geological Survey and research institutions, which will now send alerts to mobile phones using an application developed by the University of California at Berkeley and Wire’s emergency alert system.

The main task is to give seconds or tens of seconds to people to protect themselves before they start shaking.

ShakeAlert uses hundreds of seismic sensor stations to detect the start of an earthquake, calculate its location and strength, and generate alerts that the WEA app and system will send to phones in danger areas.

#Earthquake #Southern California #Garlock fault #Death Valley #Shakealert

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