Earthquake warning works by detecting the start of an earthquake. Every earthquake produces two type of seismic waves, called Primary Waves (P-waves) and Secondary Waves (S-waves). The P-waves travel fastest but carry little energy. Their presence indicates the start of an earthquake. By analyzing them, we can estimate how intense the following S-waves will be.Learn more about the science »
Ground motion sensors are placed at carefully chosen locations near faults to detect earthquakes quickly enough that a warning can be given to everyone who will be affected by serious shaking; even those at the epicenter.
Our system was specifically designed from the start to provide the best possible performance and reliability for earthquake warning.Learn more about our technology »
The value of earthquake warning is in how it is applied to protect people and property. We have over 15 years providing protection for our customers.See how applications work »