“Kopili fault Zone” – A Reason behind Assam Tremors




最近A.earthquake of magnitude 6.4 on the Richter scale hit Assam.Following the main tremors, six aftershocks (of magnitude ranging from 3.2 to 4.7) also occurred within two-and-a-half hours. The NCS recently mentioned that these tremors were attributed to the Kopili Fault Zone.

Kopili Fault Zone:


  • The Kopili fault zoneis a 300-km northwest-southeast trending fault. It is extending from the western part of Manipur to the tri-junction of Bhutan, Arunachal Pradesh and Assam.
    • 故障是两块岩石之间的骨折或裂缝区。故障允许块相对于彼此移动。这种运动可能迅速出现,以地震的形式。或者它可能以蠕变的形式缓慢发生。
  • Seismically Active:This zone is a seismically active area, so it falls into the highest Seismic Hazard Zone V.
  • The zone is associated with collisional tectonicsbecause of the Indian Plate subducting beneath the Eurasian Plate.
    • 俯冲是一个地质过程,其中一个地壳板被迫在另一个地下的边缘下方。
  • 特征: Kopili fault zone and its neighbouring areas are characterised by alluvial soils. These alluvial soil have a higher potential of trapping seismic waves. Thus making the region the印度东北大部分地震易发区.
  • 早些时候地震:kopili断层zone has witnessed many seismic activities in the past. This includes the 1869 earthquake (7.8 magnitude) and the 1943 earthquake (7.3 magnitude).
About Himalayan Frontal Thrust (HFT):


  • 首先,政府必须解决印度东北地震的知识和政策差距。
  • Secondly, the government has to build an effective Earthquake mitigation plan.
  • 第三,AN.integrated disaster management planshould be developed for the North East. This plan will help in tackling these types of high-intensity earthquakes.