ABSTRACT
The ground motion prediction equation (GMPE) is commonly used in earthquake early warning systems (EEWs) to predict ground shaking at the target site. However, the uncertainty of the real-time earthquake magnitude prediction and the uncertainty of the GMPE can cause systematic deviations in the ground motion prediction of a single earthquake. In this paper, a real-time updating of the coefficients of the intensity prediction equation is proposed and tested with data from the Luding Ms 6.8 earthquake on September 5, 2022. The results show that the method proposed in this paper is stable and reliable.
