Delhi and the National Capital Region (NCR) felt strong tremors this evening after an earthquake of magnitude 4.7 struck 63 km southwest of Gurugram in Haryana. Sharing the information, the National Centre for Seismology said that the quake occurred at a depth of 35 km.
Social media users tweeted about the earthquake that affected several parts of the NCR. There has been no report of loss of life or property.
Nearly a dozen low-intensity earthquakes have jolted the Delhi-NCR region in last three months. Experts have warned Delhi may witness a major tremor amid a range of low-intensity earthquakes reported in the NCR over the last one-and-a-half months.
Yesterday, a medium intensity earthquake of magnitude 3.2 occurred near Noida in the national capital region (NCR). These tremors followed a league of 10 earthquakes that have been recorded by the National Centre of Seismology between April 12 and May 29 this year in the Delhi NCR.
According to some geologists, these minor tremors could point to a bigger incoming earthquake.
The NDMA has requested the state governments to take steps that included ensuring compliance of building bye-laws to make upcoming constructions earthquake resilient and avoid the addition of vulnerable building stock.
The country’s pioneering research institute had said that such tremors are not unusual in the Delhi-NCR area, but they indicate that strain energy is built up in the region.
All the earthquakes in Delhi-NCR are due to the release of strain energy, which accumulated as a result of northward movement of the Indian tectonic plate and its collision with the Eurasian plate through the fault or weak zones, the institute said in a statement.
There are so many weak zones and faults in the Delhi-NCR: Delhi-Haridwar ridge, Mahendragarh-Dehradun subsurface fault, Moradabad fault, Sohna fault, Great boundary fault, Delhi-Sargodha ridge, Yamuna river lineament, Ganga river lineament, it said.
Since April, 20 earthquakes have been recorded in and around Delhi. Of the 20, two were above magnitude 4. The historical earthquake catalogue shows that there were strong earthquakes in the Delhi-NCR — of magnitudes
- 6.5 at Delhi in 1720
- 6.8 at Mathura in 1803
- 5.5 near Mathura in 1842
- 6.7 near Bulandshahar in 1956
- 6 near Faridabad in 1960 and
- 5.8 near Moradabad in 1966
The Delhi-NCR has been identified as the second highest seismic hazard zone (Zone IV).