UC Berkeley scientists today are releasing a free Android app that taps a smartphone’s ability to record ground shaking from an earthquake, with the goal of creating a worldwide seismic detection network that could eventually warn users of impending jolts from nearby quakes.
Taking advantage of gaming accelerometers
Smartphones can easily measure movement caused by a quake because they have three built-in accelerometers designed to sense the orientation of the phone for display or gaming. While constantly improving in sensitivity for the benefit of gamers, however, smartphone accelerometers are far less sensitive than in-ground seismometers. But they are sensitive enough to record earthquakes above a magnitude 5 — the ones that do damage — within 10 kilometers. And what these accelerometers lack in sensitivity, they make up for in ubiquity. There are an estimated 16 million smartphones in California, and 1 billion smartphones worldwide.
“Currently, we have a network of 400 seismic stations in California, one of the densest in the world,” Allen said. “Even if we get only a small fraction of the state’s 16 million mobile phones participating in our program, that would be a many-orders-of-magnitude increase in the amount of data we can gather.”
In a paper to be published in the Feb. 12 issue of the journal Science Advances, Allen, Kong and Louis Schreier at Deutsche Telekom’s Silicon Valley Innovation Center describe the algorithm in the mobile app that analyzes a phone’s accelerometer data and distinguishes earthquake shaking from normal vibrations, such as walking, dancing or dropping the phone. In simulated tests, the algorithm Kong developed successfully distinguished quakes from non-quakes 93 percent of the time. Only when the app determines that the vibration is from a quake does it briefly activate the phone’s GPS to obtain the phone’s position and push a short packet of information out through a data or wifi connection.
Allen hopes that thousands of people will download and install the app so that he and his colleagues can give MyShake a good test. If successful, he anticipates an updated app that provides early warning within a year.
He also discussed MyShake and other earthquake early warning systems during a scientific session on Friday, Feb. 12, during the annual meeting of the American Association for the Advancement of Science in Washington, D.C.
Critical role for in-ground seismic network
A West Coast early warning system got a big boost in this year’s federal budget when $8.2 million was appropriated to help the U.S.G.S. create such a system in conjunction with UC Berkeley, the universities of Washington and Oregon and Caltech. Allen and other seismologists gathered on Feb. 2 at the White House to discuss earthquake early warning plans and a new initiative to make all federal buildings earthquake-proof.
An early warning system along America’s earthquake-prone Pacific edge would be based on a prototype called ShakeAlert now undergoing testing in California, Oregon and Washington. In the San Francisco Bay Area, agencies such as the Bay Area Rapid Transit system already receive warnings from ShakeAlert, such as a 5-second alert after the 6.0 magnitude quake that struck nearby Napa in August 2014. At the White House meeting last week, the Gordon and Betty Moore Foundation committed $3 million to further develop ShakeAlert, and another $1 million for MyShake.
In simulated tests based on real earthquakes, MyShake was able to provide timely early warning as well as or better than ShakeAlert.
The Latest on: Worldwide seismic network
via Google News
The Latest on: Worldwide seismic network
- World Bank approves funds to improve Haiti’s infrastructure, resilience to disasteron May 27, 2022 at 6:10 am
The World Bank has approved a grant financing of US$120 million for the Haiti Resilient Connectivity and Urban Transport Accessibility Project. The Bank also approved additional ...
- A humble seismograph beneath the Great Smoky Mountains could be one of the best in the worldon May 27, 2022 at 5:00 am
Deep in the Great Smoky Mountains of Tennessee, and part of the tourist-filled Tuckaleechee Caverns, the AS107 seismograph captures a goldmine of geological data.
- World Bank Committed to Improving Infrastructure in Haition May 26, 2022 at 9:05 pm
The World Bank approved on Thursday a grant financing of US$120 million for the Haiti Resilient Connectivity and Urban Transport Accessibility Project.
- Peru earthquake felt by Kentucky seismographson May 26, 2022 at 6:28 am
An earthquake in South America was strong enough that it registered on seismographs in Kentucky.The quake happened at 8:02 a.m. Eastern time near Tirapata, Peru. It registered a magnitude 7.2 on the ...
- World Africa Day: 5 of the most important climate campaigns to followon May 25, 2022 at 8:49 am
Seven out of the ten countries most vulnerable to climate change are located in Africa, and its impacts threaten the livelihoods of over 100 million people already living in extreme poverty. In the ...
- ‘Subsea Internet cables can detect earthquakes’on May 21, 2022 at 7:49 pm
“Extending the seismic network from land to the seafloor will ... such as monitoring deep-water currents for changes caused by global warming. There is also the untested possibility of using ...
- Are You Ready For Seismic Changes In The Workplace?on May 19, 2022 at 11:00 pm
Duncan: What old habits and mindsets do you expect will be the hardest for many people to abandon while adjusting to the new workplace? Helen Kupp Kupp: The need for work to happen in meetings. For ...
- Subsea internet cables could detect earthquakeson May 19, 2022 at 12:11 pm
Optical-fibre cables could spot tsunamis or the effect of climate change on currents, researchers say.
- Seismic Services Market Size 2022, Share, Analysis, Development, Revenue, Future Growth, Business Prospects and Forecast to 2028on May 19, 2022 at 2:03 am
Seismic Services Market (2022) report offers the in-depth study of industry competition dynamics to give user a competitive advantage like share, size, recent trends, growth an ...
- Quantum key distribution network accurately measures ground vibrationon May 18, 2022 at 6:08 am
A team of researchers affiliated with several institutions in China has found that quantum key distribution (QKD) networks can be used to accurately measure ground vibration. In their paper published ...
via Bing News