Science & Technology April 17, according to foreign media reports, the US Geological Survey, the latest amendments in the South American country of Ecuador earthquake levels occur, the magnitude of the original April 16 occurred 7.4 earthquake revised to 7.8 magnitude. Quito, the capital of Ecuador, felt strongly and the buildings shook. Peru in the neighboring country was also shocked. The Tsunami Warning Center has issued a tsunami warning. At 9:26 pm on April 14th, a 6.5-magnitude earthquake on the Richter scale occurred in Kumamoto Prefecture, Japan, and many aftershocks occurred afterwards, causing considerable loss of personnel and property.
Killer app uses smart phones to detect earthquakes
No one can stop us from facing the power of the earthquake, but in the face of the possible impact of the earthquake, we are also trying hard to find ways to minimize losses. The University of California, Berkeley, in cooperation with Deutsche Telekom, has developed an application called My Shake that can use an accelerometer built into a smartphone to sense earthquakes and alert users. “My Shake cannot replace the traditional seismological network, but we believe that My Shake can provide early warnings faster and more accurately in areas with traditional seismograph networks, and that countries that do not have seismograph networks can send their lives as soon as possible. Early warning," said Richard Allen, director of the Berkeley Seismology Laboratory and head of the application program.
The accuracy of this type of sensor is less than that of a seismograph, and it can only sense an earthquake of magnitude 5 or higher, and the maximum range is no more than 10 kilometers. In spite of this, the speed at which the message is detected can still be faster than the speed of the seismic wave itself. This point has been confirmed in the 2011 Virginia earthquake in the United States. At that time, people who were shocked posted news via Twitter. Many people got information before the earthquake waves reached their area.
"We currently have 400 seismic stations in California, and the density is the highest in the world." Allen said, "Even if only a small part of the 16 million mobile phones in the state can participate in the project, we can also collect the data we have collected." Add a few orders of magnitude.†During the test, this application successfully detected in the laboratory activities such as table shaking and other earthquakes. Then, the phone quickly sent the packet back to the Berkeley server. If there are 4 or more smartphones within a 10 km radius that detect vibration, the project can confirm the earthquake and issue a warning. The data will also be matched with existing seismic network data.
"We want to make this a killer app. When you install this app on your phone, we can use your accelerometer to send an earthquake alert as soon as possible," said Allen.
Killer app uses smart phones to detect earthquakes
No one can stop us from facing the power of the earthquake, but in the face of the possible impact of the earthquake, we are also trying hard to find ways to minimize losses. The University of California, Berkeley, in cooperation with Deutsche Telekom, has developed an application called My Shake that can use an accelerometer built into a smartphone to sense earthquakes and alert users. “My Shake cannot replace the traditional seismological network, but we believe that My Shake can provide early warnings faster and more accurately in areas with traditional seismograph networks, and that countries that do not have seismograph networks can send their lives as soon as possible. Early warning," said Richard Allen, director of the Berkeley Seismology Laboratory and head of the application program.
The accuracy of this type of sensor is less than that of a seismograph, and it can only sense an earthquake of magnitude 5 or higher, and the maximum range is no more than 10 kilometers. In spite of this, the speed at which the message is detected can still be faster than the speed of the seismic wave itself. This point has been confirmed in the 2011 Virginia earthquake in the United States. At that time, people who were shocked posted news via Twitter. Many people got information before the earthquake waves reached their area.
"We currently have 400 seismic stations in California, and the density is the highest in the world." Allen said, "Even if only a small part of the 16 million mobile phones in the state can participate in the project, we can also collect the data we have collected." Add a few orders of magnitude.†During the test, this application successfully detected in the laboratory activities such as table shaking and other earthquakes. Then, the phone quickly sent the packet back to the Berkeley server. If there are 4 or more smartphones within a 10 km radius that detect vibration, the project can confirm the earthquake and issue a warning. The data will also be matched with existing seismic network data.
"We want to make this a killer app. When you install this app on your phone, we can use your accelerometer to send an earthquake alert as soon as possible," said Allen.
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