The National Geological Survey and Mines Bureau yesterday said the frequency of earth tremors in the seas south of Sri Lanka has increased.

A spokesman from the Tsunami Monitoring Unit of the Bureau told Daily Mirror yesterday that this situation has been developing for many centuries while the tremor situation in the Andaman region had been developing for the last thousand years.

However, the sources said it was not possible to predict an earth quake accurately such as the year and the magnitude. They said there was no technology to make such a prediction.

It was also explained that the Indo-Australia-Plate which Sri Lanka belongs to is moving towards the North-East direction. The speed of the movement is 5 cm an year according to National Geological Survey and Mines Bureau.

In addition, the collision of Indo-Australia-Plate and the Euroasian-Plate might be the cause of the movement of the Himalayan range, the sources also said.

Sri Lanka has been experiencing minor earth tremors recently in several areas the last one being with a magnitude of Richter scale 3 tremor in Kekirawa and Dambulla recently and also a magnitude of Richter scale 3 tremor was felt in Ampara, Batticaloa, Nuwara Eliya, Badulla, Matara and Hambantota areas.