earthquake early warning for sarpol-e zahab earthquake

Earthquake early warning system (eews) is issued by detection of p-wave, estimation of seismic parameters and decision to alarm. the eews provides advance warning of estimated seismic intensities and expected arrival time of swaves. these estimates are based on prompt analysis of hypocenter location and earthquake magnitude using data observed by seismographs near the epicenter. in this study, the b-δ method is examined to estimate an earthquake’smagnitude and epicentral distance using only initial part of p-wave data (3 s) from a single station for application in eews.