On Ground Motion Evaluation and Geophysical Surveys in Vietnam

The seismicity around Vietnam during the past 100 years and the current state of seismic observation in Vietnam were explained. Since seismicity in Vietnam is very low and few seismograms from natural earthquakes are available, it is difficult to predict strong ground motion. Given this situation, a comparison of a synthetic seismogram prepared by the empirical Green function method and the observed seismogram was shown for the 2001 Dien Bien earthquake (M5.3). Afterwards, it was noted that although the stochastic Green function method is desirable for predicting strong motion in low seismicity areas such as Vietnam, issues remain regarding how to set the parameters required for the method. (author)