new frequency-based real-time magnitude proxy for earthquake early warning in iran

Earthquake early warning system is a methodology for providing warning of forthcoming ground shaking during earthquakes. the approach uses a network of seismic instruments to detect the first-arriving energy at the surface, the pwaves, and translate the information contained in these low amplitude waves into a prediction of the peak ground shaking that follows. the instruments closest to the epicenter are the first to detect the seismic energy, and by using a seismicnetwork this information can be integrated to produce a map of future ground shaking everywhere (colombelli et al., 2015).