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Big earthquakes could hit Northeast India- Experts

New Delhi

The Union home ministry’s disaster management experts have warned of a bigger catastrophe, earthquakes with a magnitude of 8.2 or greater on the Richter scale which may hit the already ruptured Himalayan region.

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They say quakes with higher intensity than the one that struck Manipur on Monday are likely to rock the region in future. The tectonic shift a series of these recent earthquakes have caused in the region — Manipur 6.7 (Jan 2016), Nepal 7.3 (May 2015) and Sikkim 6.9 (2011) — have re-ruptured the plates that had already developed cracks during previous temblors. This has led to conditions which might trigger multiple earthquakes which may go up to 8.0 in magnitude.

In a post-Nepal disaster assessment, the MHA’s National Institute of Disaster Management (NIDM) has warned of enhanced risk around the “ring of fire garlanding the entire north India especially the mountains”. This was also highlighted at a recent meeting organised by the Centre in Arunachal Pradesh’s capital Itanagar where policy-makers from 11 hill states had participated and resolved to develop a common building code for mountains.

Experts said the interconnected plates across Nepal, Bhutan, Myanmar and India pose a bigger danger, and predicted a disaster of bigger magnitude that awaits hill states and parts of Bihar, UP and even Delhi which fall under the second worst seismic Zone IV classification. The North-East and other hill states fall under severe seismic Zone V.

Stress has increased in the mountains of north-east since the Nepal earthquake. Monday’s 6.7 magnitude earthquake in Manipur shows the stress has not been fully released, it has only become worse. “The collision between the Himalayan plate in the north and the Indo-Burmese plate in the east and the risk created as a result is the highest at this moment,” according to experts.

India is divided into four seismic zones. The most active Zone V comprises of the whole of north-east, parts of north Bihar, Uttarakhand, Himachal Pradesh, J&K, Gujarat and Andaman & Nicobar Islands. Delhi comes under Zone IV and is considered as one of the high-risk areas.

According to MHA’s own assessment, the regulatory mechanism in Indian cities that prominently figure on the disaster map are weak and any disaster striking in any one of these populous cities would cause huge casualties.

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