- In Quebec, 2 earthquakes struck within the span of 3 days this week.
- The Charlevoix region, where the earthquakes took place, is considered the "most seismically active" area of Eastern Canada.
- Hundreds of people in the Saguenay area reported feeling the repercussions of the quake.
Believe it or not, the Charlevoix region was the scene of two earthquakes to hit Quebec this week, with Earthquakes Canada reporting that people felt quakes of a 3.4 and 3.5 magnitude, respectively.
These quakes took place in what is known as the Charlevoix Seismic Zone (CSZ), considered the "most seismically active region of eastern Canada," by Earthquakes Canada.
The CSZ is located "some 100 km downstream from Quebec City," and most of the earthquakes there actually happen under the St. Lawrence River, mainly between Charlevoix County on the north shore of the river, and Kamouraska County to the south.
This zone has seen four earthquakes that reached a magnitude 6 on the Richter scale (which generally goes to 9), and surveys done in the '70s "clearly delineated the CSZ to be an active zone about 30 by 85 km, elongated along the St. Lawrence River, and enclosing the towns of Baie-St-Paul, La Malbaie and La Pocatière."
The map below shows the history of earthquakes that have hit the CSZ region, including the four magnitude-6 quakes mentioned above, as well as the one suspected magnitude-7 quake that hit in 1663.
Earthquakes Canada allows individuals to self-report if they felt the earthquake after any seismic events. The quake that happened this week on Tuesday, November 12, had 95 people report feeling it.
The one that happened yesterday, Thursday, November 14, had 266 people report feeling the quake.
The map below shows the Western Quebec Seismic Zone, which stretches from the Ottawa Valley to Montreal, and as far north as Temiscaming.
According to Earthquakes Canada, "an earthquake occurs in the Western Quebec Seismic Zone every five days on average," though as seen above, they are mostly only a magnitude of 3 and are often not felt by people.
Though, clearly, the earthquakes that happened this weekend were felt by individuals in the area, as some people in the region took to Twitter to share their experience.
I'm with the guy above, that shit is traumatizing!