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Canada Largest recorded Alberta earthquake probably natural, scientist says

08:20  01 december  2022
08:20  01 december  2022 Source:   msn.com

Solomon islands. The Pacific archipelago shaken by an earthquake of magnitude 7, threat of tsunami discarded

 Solomon islands. The Pacific archipelago shaken by an earthquake of magnitude 7, threat of tsunami discarded © Alessio Bariviera / Global Witness / Reuters The coasts of an island in the Salomons archipelago, in Coeania, July 18, 2018. The Solomon Islands were shaken by an earthquake of magnitude 7, Tuesday, November 22, 2022, triggering a tsunami alert which was sidelined later. An earthquake of magnitude 7 occurred near the islands Solomon , in the southwest of the Pacific, indicated Tuesday, November 22, 2022 the American Institute of Geological Studies (USGS).

EDMONTON — The largest earthquake ever recorded in Alberta, which rattled homes and nerves Tuesday, was probably due to natural causes, says a geologist.

  Largest recorded Alberta earthquake probably natural, scientist says © Provided by The Canadian Press

Rebecca Salvage of the University of Calgary says the 5.6-magnitude quake that rumbled near Peace River in northwest Alberta originated at least six kilometres underground. That's probably too deep to have been artificially caused, she said.

"The depth infers that it's probably natural. Natural events typically occur at those depths."

The Alberta Geological Survey reported that the series of seismic events near Reno, a tiny rural hamlet about 40 kilometres southeast of Peace River, began late in the afternoon and continued into the early evening.

Largest recorded Alberta earthquake probably natural, scientist says

  Largest recorded Alberta earthquake probably natural, scientist says EDMONTON — A geologist says the largest earthquake ever recorded in Alberta was probably due to natural causes. Rebecca Salvage of the University of Calgary says the 5.6-magnitude quake that rattled windows and shook homes near Peace River in northwest Alberta was likely too deep to have been caused any other way. Energy extraction processes such as fracking have contributed to earthquakes in other parts of the province. Salvage says theRebecca Salvage of the University of Calgary says the 5.6-magnitude quake that rattled windows and shook homes near Peace River in northwest Alberta was likely too deep to have been caused any other way.

The survey recorded the main quake at nearly 5.6 on the Richter scale, although other agencies measured it higher. It was preceded by two smaller quakes and followed by several aftershocks.

Carmen Langer, an area landowner, was climbing the stairs of his home when the quakes hit.

"I had to go right to my knees and grab a rail," he said.

The quakes, which came on with the sound of a freight train, sent his light fixtures swinging, he said. He also saw the glass in the windows of his home flex.

"I guess you're scared," he said. "You don't know what's coming after."

RCMP reported no injuries from the quakes.

Energy extraction processes, such as fracking, have contributed to earthquakes in other parts of the province. But Salvage said those kinds of quakes typically happen in the earth's upper layers.

She said scientists are aware of geologic faults in the area, although it's too soon to know which one was the source.

She said Tuesday's tremblors are rare in Alberta and offer an exciting opportunity to learn more about the province's deep geology. She said they are probably related to seismic events originating from when the Rocky Mountains were created.

"We do still get influences from the Rocky Mountains," she said. "It's feasible that some of the stresses from that are still dissipating across British Columbia and Alberta."

This report by The Canadian Press was first published Nov. 30, 2022.

Bob Weber, The Canadian Press

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This is interesting!