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4.8 magnitude earthquake hits New York City: why it is a rare event in the region | Explained News




An earthquake struck close to New York Metropolis on Friday (April 5), shaking buildings and shocking residents in an space which not often experiences any main seismic exercise. In keeping with the US Geological Survey (USGS), the preliminary magnitude of the quake was 4.8 and its epicentre was in New Jersey.

Individuals reported feeling tremors from Pennsylvania to Massachusetts. A New York Metropolis Police Division spokesperson mentioned it had not obtained any reviews of damages, Reuters mentioned.

Here’s a have a look at what might need brought about an earthquake in New York, and why the town not often experiences them.

What brought about the New York earthquake?

It isn’t clear what fault line the newest earthquake originated on. Fault strains are basically fractures that permit tectonic plates — items of Earth’s crust and uppermost mantle — to maneuver, resulting in earthquakes.

“There’s a main fault line in New Jersey known as the Ramapo Fault, which stems from the Appalachian Mountains,” in line with a report by CBS. There are additionally a minimum of 5 smaller fault strains beneath the island of Manhattan, the report added.

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Notably, it isn’t straightforward to find out precisely which fault line a quake originated alongside on the East Coast. That’s as a result of “the closest plate boundaries are within the centre of the Atlantic Ocean, making it arduous to check the world,” the report mentioned.

Why is an earthquake uncommon in New York?

Not like the West Coast areas, like California, the East Coast, which incorporates New York, doesn’t sit close to the sides of tectonic plates.

“Lots of of hundreds of thousands of years in the past, the land that will ultimately turn out to be New York was a spot the place continents crashed collectively and enormous earthquakes shook the earth beneath,” in line with a report by The New York Occasions.

The fault strains that run by means of the world grew to become much less lively over time. Nevertheless, they often nonetheless launch stress from that interval.

“Plenty of what you’re feeling right here, these little earthquakes, are a settling down of the stresses from manner again then,” John C Mutter, a professor of earth and environmental research at Columbia College, instructed the NYT.

“Plenty of what you’re feeling right here, these little earthquakes, are a settling down of the stresses from manner again then… It takes some time for issues to settle,” he mentioned.

(With inputs from Reuters and NYT)

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