A moderate underground tremor shook parts of north-eastern India late Tuesday night, causing momentary anxiety among local residents in Mizoram. The seismic event was centred in Champhai district and measured 3.7 on the Richter scale. The incident comes amid a series of seismic occurrences noted across different regions of India over recent weeks, striking at an hour when most households were asleep or settling down for the night.
Epicentre Located 24 Kilometres Beneath Champhai
According to recordings provided by the National Centre for Seismology, the subterranean disturbance struck precisely at 11:45 PM on Tuesday night. The monitoring agency established that the hypocentre of the tremor lay at a depth of 24 kilometres beneath the surface within Champhai district. Due to the relatively low to moderate magnitude, the shaking produced mild physical movement without generating immediate reports of structural collapse or casualties in the border region.
Preceding Tremor in Kashmir's Kulgam District
The Mizoram event follows another recent tremor experienced in the northern reaches of the country. On the preceding Friday, residents in Jammu and Kashmir's Kulgam district woke up to ground shaking measuring 3.6 on the Richter scale. In that instance, the seismic focus was significantly shallower, situated merely 10 kilometres below ground level. Because of the shallow depth, the morning vibration felt sharp enough to trigger panic, prompting families to rush out of their homes into open streets until stability returned.
Mechanism Behind Tectonic Movements and Tremors
The fundamental cause of such tremors lies in the continuous movement of tectonic plates constituting Earth's crust. As these massive slabs of rock grind against one another, collide, or slide along fault lines, friction temporarily locks their edges while immense stress builds behind them. Once this stored strain exceeds the strength of the confining rock, the trapped energy releases instantaneously in the form of seismic waves. These waves radiate outward in all directions, causing the ground vibrations observed at the surface.
