SUMMARY

Features of activities of the Andaman-Nicobar earthquake and tsunami 26/12/2004 and aftershock sequence

Ngô Thị Lư

The Andaman-Nicobar earthquake is one of the earthquakes and tsunami of strongest destructive force in the history. It has caused dreadfull damage to the population and properties for many countries in the region, influencing all the world and mankind. On the basis of the seismic data collected from 26/12/2004 (after occurrence of this earthquake) to 02/01/2005 about 98 aftershocks, the examination and analysis of displaying feature of the this earthquake and its relation to the displacement of great tectonic plates of the Southeast Asia region has been carried out. The features of activity, the very special temporary and spatial sequences of a series of aftershocks of this earthquake express a complicated process of development in its source area. At the given time, the process of aftershocks of this earthquake proceeds. Every day they are registered by systems of international and regional seismic stations. Therefore, the continuation of collection of seismic data, the watch after their sequence and the more detailed study on the Andaman-Nicobar earthquake are still an important and necessary task.