earthquakes" and the stability of buildings including nuclear power plants falling under high seismic zones.
"Normally buildings collapse when the acceleration caused by an earthquake is substantial. The acceleration of an earthquake is measured against Gravity i.e 1.0 g. The acceleration is said to be of 1 g if a boulder is lifted off the earth under the impact of an earthquake. In the Bhuj earthquake the gravity was just 0.35 g and hundreds of buildings had collapsed. But in the case of the earthquake in
Stating that the
backup systems as they were not erected on a high pedestal," he pointed out.
He said nuclear power plants in India will be not be affected even if a tsunami strikes the Indian coasts, Dr Chadda pointed out that the Kalpakkam power plant had its backup system erected 30 mts high.
evacuation works," he added.
Dr K Rajendran of Indian Institute of Science sees an "element of surprise" at the magnitude and the underestimated fallouts of this calamity, as all this was happening in one of the most seismically active and best-studied regions of the world, with a high level of preparedness.
"Part of the problem was that the earthquake expected to occur in the concerned source area was one of smaller magnitude (7.4 to 8.2), following a 30-40 year seismic cycle," Dr Rajendran, who has published a research paper on the
Earthquakes of greater magnitude occur once in a cycle of 1000 years, and the
According to Dr Rajendran's study, "the 9.2 quake that occurred in 2004 at