What specific waves do modern Earthquake Early Warning systems detect to issue alerts?
Answer
Primary waves (P-waves)
Earthquake Early Warning systems operate by analyzing the physics of seismic wave propagation. Earthquakes release two main types of waves: P-waves (primary waves) and S-waves (secondary waves). P-waves travel much faster than S-waves, which are the more destructive ones. By detecting the arrival of the faster P-waves at a sensor network, the system can calculate when the damaging S-waves will arrive at a specific location, providing a brief window for protective action.
Related Questions
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