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.

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