Google is working with the U.S. Geological Survey (USGS) and several California universities to develop an early warning system. This would alert users just seconds before an earthquake strikes. While this time may seem short, it could be enough time for people to retreat to a safe place, such as under a table. This window of time could also be enough to slow trains, prevent planes from taking off or landing, and prevent vehicles from entering bridges or tunnels. This system could save lives in the event of a stronger earthquake.
The earthquake detection system uses two main sources of data. Initially, the network relied on 700 seismometers installed by experts at Caltech and the University of California, Berkeley, and supported by the California state government. These seismometers can detect earthquakes and signal when something unusual is happening. However, Google went further and created the world’s largest earthquake detection system using mobile phones.
Earthquake detection system on mobile phones?
Most Android smartphones have a built-in accelerometer that detects the phone’s movement. This technology is typically used to rotate the screen or provide pedometer information. However, these sensors can also act as mini seismometers. Google has rolled out a feature that lets users enable their phones to detect the vibrations that characterize the primary (P) waves of earthquakes. If thousands or even millions of phones detect such signals, the system can determine when and where an earthquake occurred. It can then send alerts to phones in affected areas before the earthquake strikes.
The technology could be particularly useful in areas without an established seismic network, such as remote or poor areas. In October 2022, Google engineers saw phones around the San Francisco Bay Area transmitting earthquake detection data as seismic waves traveled outward from the epicenter.
This technology could revolutionize earthquake prediction and save lives around the world, as our phones can now be used not only to stay connected, but to save lives as well.
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