Assam earthquake: State felt tremors of such high magnitude after 60 years | India News
“Historical and instrumentally recorded data on earthquakes reveal that the region is affected by moderate to large earthquakes and the most prominent events among them are the M 6.0 Assam earthquake of July 29, 1960,” said the NCS in its report to earth science ministry (I had to).
However, the nearby region, beyond Assam, had felt two more high intensity earthquakes in the recent past, one (M 7.1) recorded in Manipur on January 3, 2016 and another (M 6.4) in Bhutan in September 2016. 2009.
The epicenter of Wednesday’s earthquake was located about 80 km northeast of Guwahati; 132 km north of Shillong and 180 km west of Jorhat. It hit Assam at 7.51 am at a depth of 17 km from the surface.
Sharing its findings with the Ministry of Earth Sciences (MoES), the NCS said damage to buildings was reported within 100 km of the epicenter in the Sonitpur, Nagaon and Guwahati areas.
“Six aftershocks of magnitude 3.2 to 4.7 were reported within 2.30 hours from the time the 6.4 main shock occurred, signifying the release of stress in the vicinity of the origin in and around Sonitpur, Assam, “he said in his report.
The NCS said: “Preliminary analysis shows that the events are located near the Kopili fault closer to the Himalayan Frontal Thrust (HFT). The area is seismically very active and falls into the highest V-Seismic Hazard Zone associated with collision tectonics where the Indian plate subducts below the Eurasian Plate ”.
The earthquake was felt throughout the Northeast region of India and some parts of Bihar, West Bengal and Bangladesh. “More than 70 felt reports due to this earthquake have been received from Assam, Bihar, West Bengal and Bangladesh via the NCS website and mobile app with an intensity ranging from I to V on the Mercalli intensity scale. modified (MMI), ”the report said.