7.7 earthquake on islands off west coast of Canada: USGS
The epicenter of the tremor, which occurred at 8:04 pm (0304 GMT Sunday) was located 139 kilometers (86 miles) south of the town of
Numerous aftershocks, some as large as magnitude 4.6, followed the initial quake, Canadian officials reported.
However, the regional West Coast-Alaska Tsunami Warning Center issued a regional warning for coasts located near the epicenter of the earthquake.
Emergency officials in
The officials urged residents in low-lying coastal areas to be alert to instructions from local officials and be prepared to move to higher ground.
"There have been no reports of damage at this time," the ministry added.
However, experts said tremors exceeding magnitude 7.0 were extremely dangerous.
"A 7.7 is a big, hefty earthquake. It's not something you can ignore," Gerard Fryer, senior geophysicist at the
He explained that the latest tremor had occurred partly under an island, but mostly under shallow water.
"I think we have to be thankful it happened where it did," Fryer said. "If that were a heavily populated area, it would have caused significant damage."
"It definitely would have done significant damage if it had been under a city," the geophysicist added.
The Globe and Mail newspaper reported that the US Coast Guard in
The Canadian paper also quoted Lieutenant Bernard Auth of the
The earthquake reading was based on the open-ended Moment Magnitude scale used by US seismologists, which measures the area of the fault that ruptured and the total energy released.
The Queen Charlotte Islands, which are also known by their official indigenous name of Haida Gwaii, comprise about 150 islands located north of