A magnitude 6.4 earthquake is 15.8 times bigger and 63.1 times stronger than a 5.2 earthquake, according to the U.S. Geological Survey.
“That’s why at 6.4 this changes how we think about the region,” West said. “It’s a little early to say how, but it’s safe to say this earthquake will cause a re-evaluation of the seismic potential of that area.”
The magnitude 6.4 earthquake was felt by workers at the oil-production facilities in and around Prudhoe Bay, the News reported.
The newspaper says that Alyeska Pipeline said the earthquake did not damage the trans-Alaska pipeline. The company says in a tweet that “there are no operational concerns” related to the earthquake, but the pipeline will be inspected.
At 7:14 a.m., a magnitude 5.1 earthquake hit another area in northern Alaska. The USGS says the earthquake hit a spot about 340 miles (549 kilometres) northeast of Fairbanks.