Travelling waves in the occurrence of earthquake in Taiwan

Predictions based on the past history of seismicity can be useful for reducing the earthquake loss. It can help people to prepare for shorter term forecasting. There is not a simple matter to predict the spatial-temporal pattern of earthquake over time and geography because of the presence of nonstationarity and nonlinearity in fault movement data. An understanding of the spatial-temporal pattern of past seismic events would aid the preparedness to moderate earthquake damage. In this paper, a method of empirical mode decomposition (EMD) to show a spatial-temporal travelling wave in the past history of seismicity is proposed.