The Indian Tsunami early warning centre at Hyderabad has the capability to
detect Tsunami generic earthquakes in Indian Ocean and Global oceans within ten
minutes of their occurrence and could dissemination warnings within twenty
minutes to the affected area by e mails, Fax, SMS, Web site and Global
The Indian Tsunami Early Warning Centre (ITEWC), which is based at &
operated by Indian National Center for Ocean Information Services (INCOIS),
Hyderabad has all necessary infrastructure and capabilities to give tsunami
advisories to India as well as to Indian Ocean countries.
Since 2011, ITEWC is providing tsunami warnings and related services to all
countries in the Indian Ocean Rin countries number 24 in all beyond fully
serving ther India's coastline and islands
Tsunami Service Providers for the entire Indian Ocean Region by the
Intergovernmental Oceanographic Commission (IOC) of United Nations Educational,
Scientific and Cultural Organization(UNESCO),
The ITEWC consists of national and
international observational network of seismic stations, sea level gauge
stations and tsunami buoys around the Indian and Pacific Oceans. Data from
approximately 400 seismometers is being received in real-time and processed
automatically to detect an earthquake of magnitude 4.0 and above anywhere on
As soon as the earthquake is
detected, warning centre transmits the first bulletin based on seismic data
describing the location of earthquake, its magnitude, depth and other
characters of the event. After issuing the first bulletin, seismic data are
further analysed to improve the accuracy of earthquake parameters (magnitude,
depth and location). The processing of seismic data is optimized to detect and
characterize large earthquakes within earliest possible time.
A pilot project on Earthquake Early Warning (EEW) system is under
implementation for northern India (Uttarakhand) by Indian Institute of
Technology (IIT) Roorkee which is funded by the Ministry of Earth Sciences
(MoES). Such type of system gives a time lead for a few seconds to little more
than a minute for issue of warning on occurrence of an earthquake, so that some
remedial actions regarding vacating building, shutting down critical operations
etc may be taken up. Having said that, it is appropriate to mention that so far
earthquake prediction is not developed anywhere in the world with precise
degree of accuracy with respect to time, space and magnitude.
Although there is no proposal to acquire other systems available in the
global market, but equipments are being acquired for the refinement of Tsunami
warning criteria and that is an ongoing process.
The new research techniques such as Water level inversion, real-time
inundation modeling, real-time estimation of focal mechanism of earthquake to
show the style of faulting and incorporation of global navigation satellite
system (GNSS) data into the warning chain are the few key issues that ITEWC has
taken up on priority.
All these will enable more informed decisions on evacuation, as well as to
eliminate the potentially dangerous false evacuations.
The information was given by Minister of State for Ministry of Science
& Technology and Ministry of Earth Sciences Y.S.Chowdhary in a written
reply to a question in Lok Sabha last week.