Earthquake early warning system deployed at Uttarkhand - Environmental ecology and Climate Change
Q. Consider the following statements
1. Earthquake early warning system is deployed at Uttarkhand.
2. It will issue warnings 1-40 seconds before earthquakes of magnitude 5 occur.
Which of the above statements is / are correct? - Published on 10 Jul 15
a. Only 1
b. Only 2
c. Both 1 and 2
d. None of the above
ANSWER: Both 1 and 2
Warning of earthquakes are based on the detection of P and S waves generated during an earthquake. The P wave, which is harmless and travels faster than the S wave, is detected by the sensors for advance warning. The first system has been installed in Dehradun, and the second will be established at Pithoragarh in the Kumaon region.