Tuesday January 22, 2019
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Experts say Manipur and Nepal earthquake not connected

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earthquake

Kolkata:The destructive Manipur earthquake on Monday that rocked other northeastern states and neighbouring countries Bangladesh, Myanmar, Bhutan is not linked to Nepal’s earthquake April 25, experts have asserted. 

At least six people were killed and more than 50 injured when an earthquake measuring 6.7 on the Richter scale hit Manipur and its neighbouring states in the northeast and east India.

Reports of more death and devastation continue to trickle in, serving as a haunting reminder of the April 25 killer quake in the Himalayan nation, measuring 7.9 on the Richter Scale, that claimed over 8,000 lives.

However, seismologists and geologists have quashed rumours of the Manipur earthquake being an after-effect of the Nepal temblor.

“It is not connected to the Nepal earthquake,” clarified R Dharuman of the Geological Survey of India (GSI), adding a GSI team will be sent out to map the region and launch studies on the temblor.

Manipur is situated in seismic zone V, the most earthquake prone area in the country.

The temblor occurred as the result of a strike-slip faulting (vertical or nearly vertical fractures where the blocks have mostly moved horizontally) in the boundary region between India and the Eurasian plate in southeast Asia, according to the USGS.

The Indian Meteorological Department said the epicenter of the quake was in Tamenglong region of Manipur state at a depth of 17 kilometers (about 10 miles).

Allaying fears, B K Rastogi, former director general of Gandhinagar-based Institute of Seismological Research (ISR) said this earthquake is “not an indicator or precursor to a larger earthquake” in the near future.

“However, monitoring is essential. The (Indo-Myanmar) region is full of faults and many active faults are there. Monitoring and enforcement are totally missing in India. The government has to ensure monitoring and enforcement of rules while adherence to building codes must be maintained to minimise losses,” Rastogi said.

India’s northeast region is considered the world’s sixth most earthquake-prone belt.

The region has a history of powerful earthquakes caused by the northward collision of the Indian and Eurasian plates. They are moving towards each other at a rate of 4-5 cm per year.

Data from Manipur’s National Institute of Disaster Management shows that earthquakes of low to moderate intensity are regularly recorded in the state.

The state has weathered dozens of large earthquakes, the biggest in recent times being the 1988 temblor measuring 7.2 on the Richter Scale.

The distinguishing feature of Monday’s quake is its duration, pointed out Indian Institute of Technology-Guwahati’s Chandan Mahanta.

Factoring in the vulnerabilities, site-specific building codes must be followed, Mahanta iterated.

“The thing that causes damage is the material on which the buildings are standing. Generally, the soil magnifies the seismic waves more so there will be more acceleration and on rocks, it is sometimes less.

“In Manipur, there are some areas where there must be soil and rocks in others. The impact also depends on the number of storeys of the building. Short buildings are vulnerable in rocky foundations and tall buildings are fine on rocky foundations. Similarly, tall buildings are vulnerable in soil foundations,” added Mahanta.(IANS)

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Chile Survives Through Major Quake With Little Damage

Chile is located along the so-called Ring of Fire, which makes it one of the most seismic countries in the world.

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Boats lifted by an earthquake-triggered tsunami sit on a dock, in Coquimbo, Chile, Sept. 18, 2015. A magnitude 6.7 quake struck the city Jan. 19, 2018, but no tsunami was generated. VOA

A 6.7-magnitude earthquake has shaken cities on Chile’s northern coast. No damages have been reported so far, but Chile’s National Emergency Office ordered a preventative evacuation of a stretch of coast near the city of Coquimbo.

Chilean authorities said the quake didn’t have the characteristics that would generate a tsunami. The U.S. Tsunami Warning System also ruled out a tsunami.

The U.S. Geological Survey said the epicenter of the magnitude-6.7 quake was 15.6 kilometers (9.7 miles) south-southwest of Coquimbo, and had a depth of 53 kilometers. It struck at 7:32 p.m. local time.

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Earthquake epicenter

A witness told Reuters there was minor damage to older buildings and power outages in the nearby coastal city of La Serena, a popular beach town about 400 kilometers (250 miles) north of Santiago.

“It felt very strong … the tourists were very nervous, but nothing serious happened,” Camila Castillo, a receptionist at a hotel in La Serena, told Reuters.

Chilean miner Antofagasta Plc said operations were normal at its Los Pelambres copper mine following the nearby earthquake.

Also Read: Amazon.com In Talks With Chile To Create A Ground For Developing Artificial Intelligence

Chile is located along the so-called Ring of Fire, which makes it one of the most seismic countries in the world.Chile is located along the so-called Ring of Fire, which makes it one of the most seismic countries in the world. An 8.8-magnitude earthquake and ensuing tsunami in 2010 killed 525 people. (VOA)