Seismic Hazards Evaluation Using Ground motion Parameters in Chile

Abstract:

During recent earthquake (Mw=8.3) of 16 September 2015 recorded ground parameters which were compared with numerous attenuation relations developed for the Chile subduction zone and other regions. The predicted ground motion parameters show a good correlation with the observed ground parameters. In comparison, some models show large variations in observed and predicted ground parameters within epicentral distance 80km, the other models show large variations when the epicentral distance is larger than 300km. The results discussed in this paper will be of great use to Seismologists, Geophysicists, Civil and Earthquake engineers in updating existing building codes in Chile and surrounding regions, and also for the evaluation of seismic hazards. In this paper, we have also discussed the use of seismicity catalogue in prediction of the size, location and probability of an earthquake. The results show that Gutenberg-Richter values, recurrence time and local probability can be used for seismic hazard evaluation.