Citizens of the US city of San Francisco faced moments of tension due to a magnitude 4.8 earthquake that happened last Tuesday, 25. This event could be notified shortly before people felt the tremors, because the Google warned about the earthquake to more than 1 million people. Learn more about this throughout the text.
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Moments of tension
Even today, it is difficult to issue accurate early warnings about earthquakes. In general, wave and earthquake measurement agencies are caught by surprise and manage to detect the risk of an earthquake just a few minutes or even seconds before it happens.
That's what happened in San Francisco last Tuesday, when measurement agencies detected softer seismic waves coming from the ground. In this case, the majority of the population cannot feel these tremors, but to solve this problem there are thousands of sensors in activity to issue alerts about these waves.
Then, a mechanism called ShakeAlert manages to alert researchers and scientists that there are stronger seismic waves on the way. Next, it is necessary to announce the risk as quickly as possible to the population, which does not always happen accurately due to the short time interval.
Android users saw that Google warned about the earthquake
If in previous times these alerts were issued by television or radio, with a certain delay, recent technologies provide greater speed in issuing these warnings. That's what happened to the citizens of San Francisco, who minutes before the magnitude 4.8 earthquake could actually be felt, received the warning.
What was surprising was that the warning came via cell phone. In this case, all Android users, more than one million, received the alert released by Google that it said “You may have felt tremors” and warned about the need to prepare for stronger waves. strong.
According to some citizens, the warning was seen seconds before the most intense tremors, while others had minimal time to prepare. For the coming years, there are expectations of evolution in technology for greater precision in these warnings.