Reporter mark sayr said: "the earthquake early warning system can sense the very early signal of the earthquake. P wave is the first seismic body wave recorded by (seismograph) when the earthquake occurs, and then transmitted to the ground to become a more destructive S wave (S wave)."
There are sensors all over California, especially in the Gulf and Los Angeles. The speed at which you can get geological warning information depends on your distance from the earthquake, said bard Aagaard, a US Geological investigator.
exceptMobile phoneThe application software can remind the public of earthquake early warning information.California will also send the Amber Alert to the public in the form of text messages, forming the first state-wide earthquake warning system in two ways..
California is in a high earthquake-prone area, with 6.4 and 7.1 magnitude earthquakes on July 4 and 5, and this year marks the 30th anniversary of the 6.9 magnitude earthquake in San Francisco, California.