quake zone close to Lanka
An earthquake active zone off the southern coast of Sri Lanka has
been brought to the notice of the President's office by the Geological
Mines and Survey Bureau (GSMB).
GSMB has been studying the area in the Indian Ocean region, 400-500
kilometers south of Sri Lanka, for the past five years and claims
it is the reason for the occurrence of some tremors in the country.
India and Russia too are doing research in the area but the work
is still limited to gathering data.
continental crust is getting active. There is a clustering of earthquake
locations in that basin," GSMB director Sarath Weerawarnakula
said. However, all tremors recorded in the area have been less than
5.0 on the Richter scale and 20/30 kilometers in depth.
authorities are scrambling to put an early warning system in place
and also get Sri Lanka connected to an international tsunami alert
system. President Chandrika Kumaratunga herself has taken an initiative
and will propose the setting up of an early warning system for the
South Asian region.
Lanka has not signed up as a member of an interantional tsunami
monitoring system, as the country was not considered vulnerable
to tsunamis until last Sunday. But now steps are being taken to
sign up to this system, which was established in 1965 by the Intergovernmental
Oceanographic Commission of UNESCO.