Earthquake detection and early alerts, now on your Android phone
Earthquakes happen daily around the world, with hundreds of millions of people living in earthquake prone regions. An early warning can help people prepare for shaking, but the public infrastructure to detect and alert everyone about an earthquake is costly to build and deploy. We saw an opportunity to use Android to provide people with timely, helpful earthquake information when they search, as well as a few seconds warning to get themselves and their loved ones to safety if needed.
Sending earthquake alerts to Android devices in California
First, we collaborated with the United States Geological Survey (USGS) and California Governor’s Office of Emergency Services (Cal OES) to send earthquake alerts, powered by ShakeAlert®, directly to Android devices in California.
Developed by the nation’s leading seismologists, the ShakeAlert system uses signals from more than 700 seismometers installed across the state by USGS, Cal OES, University of California Berkeley, and the California Institute of Technology. A few seconds of warning can make a difference in giving you time to drop, cover, and hold on before the shaking arrives.
Building the world’s largest earthquake detection network
Installing a ground network of seismometers, as California has done, may not be feasible in all impacted areas around the world. So we’re using the reach of Android’s platform to help detect earthquakes.
Starting today, your Android phone can be part of the Android Earthquake Alerts System, wherever you live in the world. This means your Android phone can be a mini seismometer, joining millions of other Android phones out there to form the world’s largest earthquake detection network.
All smartphones come with tiny accelerometers that can sense signals that indicate an earthquake might be happening. If the phone detects something that it thinks may be an earthquake, it sends a signal to our earthquake detection server, along with a coarse location of where the shaking occurred. The server then combines information from many phones to figure out if an earthquake is happening. We’re essentially racing the speed of light (which is roughly the speed at which signals from a phone travel) against the speed of an earthquake. And lucky for us, the speed of light is much faster!
To start, we’ll use this technology to share a fast, accurate view of the impacted area on Google Search. When you look up “earthquake” or “earthquake near me,” you’ll find relevant results for your area, along with helpful resources on what to do after an earthquake.
We’ve worked with globally-renowned seismology and disaster experts Dr. Richard Allen, Dr. Qingkai Kong and Dr. Lucy Jones to develop this crowdsourced approach for detecting earthquakes all around the world.
You might be wondering, “what’s next?” We’re starting with earthquake alerts in California since there’s already a great seismometer-based system in place. Over the coming year, you can expect to see the earthquake alerts coming to more states and countries using Android’s phone-based earthquake detection.
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