Can human activity like building dams and conducting nuclear explosions trigger quakes?
Earthquakes originate too deep – some are as deep as 700 km – inside the earth to be influenced by human activities. But there are some dams that are giving induced seismicity. A National Geo-physical Research Institute study has shown that the Koyna and Warna dams, which are close to each other, are causing induced seismicity in the region. On the other hand, the Bhakra dam, one of the largest in India, has shown no such indications.
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