The new earthquake warning app is a software that can let people know about earthquake warning before an earthquake. It can remind people in advance before the earthquake and provide people with a lot of earthquake science information. After the earthquake, it can also upload disaster information quickly, which is convenient for professional rescuers to rescue. The functions in the software are very intimate, which can better reduce the losses caused by the earthquake.
Earthquake early warning software is software that can provide earthquake early warning. It can inform mobile phone users of the impact of the earthquake, how long it will take for the seismic wave to arrive, and give a voice countdown alarm. The software has applied for an international invention patent.
Early warning receiving software is the link of early warning system to transmit early warning information to users. It receives the early warning information monitored by the early warning center through the earthquake early warning monitoring network, and issues the early warning information to mobile phone users through the mobile phone network.
Technical principle of earthquake early warning
The cause of the earthquake is the sudden rupture and dislocation of rock mass several kilometers to several hundred kilometers underground. The energy released by these faults and dislocations radiates to the surrounding areas in the form of seismic waves. Seismic wave is a kind of mechanical wave, which has a certain propagation speed. When an earthquake happens, we must wait for the corresponding seismic waves to spread to people's places. This time difference leaves room for earthquake warning.
When an earthquake occurs, a P wave that vibrates up and down appears first, with a small amplitude. It takes about 10 seconds to 1 minute for the horizontally moving S wave to arrive, causing serious damage. Earthquake early warning is to use the time difference between P wave and S wave after earthquake.
In principle, the early warning information is received before the earthquake 10 second in the area within 50 kilometers of the focal point; Areas within 90- 100 km can receive early warning information more than 20 seconds in advance. According to the data, accurately estimate the magnitude and epicenter location, and quickly estimate the impact of the earthquake on the early warning target.
The above contents refer to Baidu Encyclopedia-Earthquake Early Warning.