India’s 1st Earthquake Warning System successfully installed in Uttarakhand. Consider the following statements:
Which of the above statements are correct?
Only 2
An Earthquake Warning System (EWS) was successfully installed in Uttarakhand, Dehradun in the first week of July 2015. With this, Uttarakhand became first Indian state to install a system that can detect earthquakes and disseminate warnings. According to the Bureau of Indian Standards (BIS), Uttarakhand falls under Seismic Zone –V, which is a zone of high seismic activity with magnitude of 6.9 or greater on Richter scale. Apart from it, Jammu and Kashmir, Himachal Pradesh, Rann of Kutch (Gujarat), Northern Bihar and Andaman & Nicobar Islands also fall under this seismic zone.
This technology was brought by the state Disaster Management and Mitigation Centre (DMMC) and is operational at the State Emergency Operation Centre (SEOC). The system is incorporated with sensors that can detect P (Primary) and S (Secondary) waves generated during an earthquake.
It is capable to detect the harmless P wave, which travels faster than the S wave for advance warning.