Earthquake in Delhi Today: Why NCR is on a higher risk of major earthquake? – For the second time in a week, trembling Delhi, know what these small earthquakes are indicatingOn December 25, 2020 by admin
51 earthquakes in the vicinity of Delhi in 2020
According to data available on the website of the National Center for Seismology (NCS), a total of 51 small to medium intensity earthquakes have occurred in Delhi or within a radius of 200 km. Some of these centers were in Delhi, some in Uttarakhand and most of them in Haryana. This year, there were a total of three earthquakes of more than 4 magnitude, one on 29 May (intensity 4.5, center Rohtak), the other on 3 July (intensity 4.7, slightly away from Kendra Gurugram) and the third on 17 December (intensity 4.2, center Rewari ) Came on.
The visible effect of stress in Himalayan crust?
More than five and a half million years have passed, but the Indian plate continues to slide. It is growing towards the Asian plate at a speed of 5-6 centimeters per year. The crust below the Himalayas is also under great stress. If they find a place to shift, they will either move or break. The slow release of tension is also being attributed by some experts to small earthquakes.
Experts are not denying the possibility of major earthquake
Experts on the recurring earthquakes in Delhi-NCR are talking about three possibilities. Although the chances of a major earthquake are not being ruled out, he says that buildings in Delhi-NCR should start preparing for earthquakes. Building assessments are very important at this time, so as to minimize the loss of major earthquakes. Earthquake tremors have been felt more than 20 times in the last six months. According to the Union Ministry of Earth and Science, the tremors were very mild on the Richter scale. However, earthquake researchers are considering these mild earthquakes to be a threat.
History of earthquake in Delhi-NCR
Delhi-NCR, located on the interior of Indian plates, has a long history of earthquakes. Although the time, place and intensity of the earthquake cannot be clearly estimated, it is clear that there are frequent earthquake tremors in the NCR region, which can cause major earthquakes in the capital.
Dr. K Sen, Director, Wadia Institute of Himalayan Geology, Dehradun
What are the conditions in Delhi?
According to earthquake expert Dr. P Pandey, there can be no forecast about the earthquake. The first is that such small tremors will occur continuously for some time and then the situation will become normal. The second situation is that there are frequent small tremors and then a big earthquake, but in this situation usually a big earthquake occurs after five to seven small earthquakes. The third situation is that this earthquake coming in Delhi NCR is telling about a major earthquake coming in a distant area.
The large area of Delhi is sensitive to earthquake
Delhi-NCR falls in Zone 4 of the earthquake. In 2014, the National Center of Seismology (NCS) did a micro zone study of Delhi-NCR. Accordingly, about 30 percent of the capital is in Zone-5, which is the most susceptible to earthquakes. More preparation should be done in these parts. Older buildings need to be prepared for earthquakes.
These areas of Delhi are more threatened
Weak and fault areas in Delhi-NCR are as follows:
- Delhi-Haridwar Ridge
- Mahendragarh-Dehradun Subsurface Fault
- Moradabad Fault
- Sohna Fault
- Grade boundary fault
- Delhi-Sargodha Ridge
- Yamuna River Line
- Ganga River Line
Strain energy is increasing in many areas
P.K., Head of Seismology Department at IIT Dhanbad “Frequent shocks of low intensity are a sign of a major earthquake,” says Khan. He said that in the last two years, Delhi-NCR has seen 64 earthquakes of 4 to 4.9 magnitude on the Richter scale. At the same time, earthquakes of more than five magnitude occurred 8 times. According to Khan, “it shows that the energy in the area is increasing, especially near New Delhi and Kangra.” There is also a stir on the Delhi-Haridwar ridge. Every year there is a 44 mm movement in the plate.
How can Delhi survive a major earthquake?
Wadia Institute Director Kalchand Sai said that for the rescue the local authorities would have to see that the buildings constructed in their area were as per the standards of Bureau of Indian Standards. He said that if Delhi-NCR is ready for it (earthquake) then both life and property can be saved in case of a big earthquake. Delhi is just 200 km away from the most sensitive Himalayan region in terms of earthquake.
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