Aftershocks felt after North Korea's nuclear test 'shifted Earth's crust'

Tremors detected this weekend near North Korea are likely after effects of the rogue state's nuclear testing, according to the US Geological Survey.  

Two minor tremors of magnitude 2.9 and 2.4 were detected on Saturday from near North Korea's nuclear test site, a US Geological Survey official told Reuters. 

"When you have a large nuclear test, it moves the earth's crust around the area, and it takes a while for it to fully subside. We've had a few of them since the sixth nuclear test." 

North Korea conducted a huge nuclear test in September, and claimed the weapon they detonated was a hydrogen bomb.

An H-bomb is far more dangerous than a standard atomic bomb. Experts believe the device tested in September was at least ten times as powerful as the bomb dropped on Hiroshima. 

North Korea hinted in October its next nuclear test could be above ground after US President Donald Trump warned the US would "totally destroy" the country if it threatened America.

Kim Jong-un declared the North Korean nuclear force complete after the test of its largest ever intercontinental ballistic missile last month, which experts claim puts all of America within range.

It could also reach anywhere in New Zealand.

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