Topics Covered: Disaster management.
An earthquake of magnitude 6.4 on the Richter scale hit Assam recently.
- The preliminary analysis shows that the events are located near to Kopili Fault closer to Himalayan Frontal Thrust (HFT).
- The area is seismically very active falling in the highest Seismic Hazard zone V associated with collisional tectonics where Indian plate sub-ducts beneath the Eurasian Plate.
What is Himalayan Frontal Thrust (HFT)?
HFT, also known as the Main Frontal Thrust (MFT), is a geological fault along the boundary of the Indian and Eurasian tectonic plates.
What is a fault?
A fault as “a fracture along which the blocks of crust on either side have moved relative to one another parallel to the fracture”.
Need of the hour:
The Northeast is located in the highest seismological zone, so we must have constant earthquake preparedness at all levels. Continuous tectonic stress keeps building up particularly along the faultlines.
Historical and instrumentally recorded earthquake data show the region has seen several “moderate to large earthquakes”. The worst of these was the great Assam-Tibet Earthquake that occurred on Independence Day in 1950.
Sources: Indian Express.