Tibet, October 21 (ANI): An earthquake of magnitude 4.0 struck Tibet on Tuesday, the National Center for Seismology (NCS) said.
The quake occurred at a shallow depth of 10 km, increasing the likelihood of aftershocks. In a post on X, the NCS gave the details: “EQ of M: 4.0, On: 21/10/2025 20:29:44 IST, Lat: 28.84 N, Long: 85.55 E, Depth: 10 Km, Location: Tibet.” https://x.com/NCS_Earthquake/status/1980653532354413018
Earlier this month, on October 7, the NCS reported another quake in the region: “EQ of M: 3.2, On: 06/10/2025 21:13:37 IST, Lat: 29.28 N, Long: 95.26 E, Depth: 10 Km, Location: Tibet.” https://x.com/NCS_Earthquake/status/1975231397515194669
Shallow earthquakes are generally more dangerous than deeper ones because their seismic waves travel a shorter distance to the surface, producing stronger ground shaking that can cause greater structural damage and casualties.
The Tibetan Plateau is seismically active due to tectonic plate collisions. Tibet and Nepal lie on a major fault zone where the Indian plate pushes into the Eurasian plate; earthquakes are common as a result. The plateau’s high elevation results from crustal thickening from this collision, which also produces faulting within the plateau characterized by both strike-slip and normal mechanisms. North-south striking grabens, strike-slip faults and GPS data show the plateau extends east-west.
In northern Tibet, strike-slip faulting dominates, while the south is characterized by east-west extension on north-south trending normal faults. Seven north-south rifts and normal faults in southern Tibet were identified in the late 1970s and early 1980s from satellite imagery; they began forming with extension about 4–8 million years ago.
The largest Tibetan earthquakes (around magnitude 8.0) occur on strike-slip faults; normal-faulting events are typically smaller. In 2008, five normal-faulting earthquakes of magnitude 5.9 to 7.1 occurred across the plateau. (ANI)
(This content is sourced from a syndicated feed and is published as received. The Tribune assumes no responsibility or liability for its accuracy, completeness, or content.)
