Nueva Delhi: Delhi-DNR residents and several parts of northern India were awake on Monday morning in Monday morning, since the strong tremors shook high-rise buildings, which caused many to rush outdoors . The earthquake, which measures 4.0 on the Richter scale, hit at 5:36 am National Sismology Center (NCS).
Although an earthquake of magnitude 4.0 is considered moderate, its impact felt stronger than usual due to its shallow depth and proximity to the densely populated areas. The earthquakes with epicentres within a city result in a more intense tremor since seismic waves travel to a shorter distance before reaching the structures, amplifying the tremors.
Delhi, who falls into Seismic Zone IVIt is prone to moderate to strong earthquakes, which makes localized tremors more pronounced such as. The experts noticed that buildings, particularly high increases, are carried more due to their design, which increases perceived intensity of tremors.
The authorities have not reported important damage or casualties, but sudden tremors caused concern among residents. Seismologists continue to monitor the aftershocks and have advised citizens to remain informed about preparation for earthquakes measures.
See how close it was from the epicenter: Dhaula Kuan
Why did the tremors feel so strong?
- Epicenter inside Delhi: since the earthquake originated under the city, the seismic waves had less distance to travel, making tremors feel more intense.
- Shadow depth: earthquakes that occur closer to the surface of the Earth generate stronger agitation compared to the deepest earthquakes of similar magnitude.
- Urban infrastructure: Buildings of great height in Delhi, Noida and Ghaziabad balance more due to its height, amplifying the feeling of tremors.
- Soil composition: soft alluvial soil in some areas of Delhi can amplify seismic waves, further intensifying tremors.
Why did the earthquake occur?
Delhi is close to active failures, including Delhi-Hardwar crest and Mahendragarh-Dehradun fault, which makes it prone to moderate seismic activity. The tremors were caused by the movement of the tectonic plate along one of these failures, where stress accumulates over time and is finally released as an earthquake.