P and S Waves

Seismic waves  are the waves of energy caused by the sudden breaking of rock within the earth.  There are several different kinds of seismic waves, and they all move in different ways. The two main types of waves are  body waves  and  surface waves . Body waves can travel through the earth's inner layers, but surface waves can only move along the surface of the planet like ripples on water. Earthquakes radiate seismic energy as both body and surface waves.

Travelling through the interior of the earth,  body waves  arrive before the surface waves emitted by an earthquake. The first kind of body wave is the  P wave  or  primary wave . This is the fastest kind of seismic wave, and, consequently, the first to 'arrive' at a seismic station.

Seconds Matter

TDG offers the optimum Early Warning Solutions based on special algorithms and AI.

Building-Based Early-Warning

City Scale Regional Early-Warning

Audio-Visual Warning

Digital/Relay Outputs for Automation

False Alarm Elimination by Multi-Location Sensing

Machine Learning / Special Algorithms

Smart Phone Application Support

Special Algortihms & AI

P waves are approximately 1.7 times faster than the S-waves. Time difference between the arrival of P and S waves increases with the of a certain location to the epicentre of the earthquake.

It is possible to produce an early-warning signal before earthquake hits. The duration of the early -warning signal varies depending on several variables.

It is possible to shut down electricity, gas, elevator systems, run visual and audible announcements, or generate countdowns and warnings through applications over the automation system a certain time before the destructive main earthquake shock.

In addition to these, it also provides an infrastructure for operational units such as Emergency & Disaster Coordination Unit, fire brigade, rail transport, subway, or airport administrations to get ready to take necessary precautions in urban-scale solutions.