Empirical relationships based on the P-wave envelop for distance and magnitude estimation for earthquake early warning in Iran

The main goal of an Earthquake Early Warning (EEW) system is to reduce the damaging effects of the hazardous earthquakes. The characterization of an earthquake for EEWincludes most importantly, the estimates of itssize (magnitude) and location. In this study, the distance and magnitude of the selected earthquakes were estimated using the envelope ofthe initial part of the P-waveforms deploying a single seismic record.