Charlevoix Earthquakes of magnitude larger or equal to 4, 1977-1997
Date Time(UT) Lat Long Depth Magnitude
yyyy-mm-dd hh:mm:ss (N) (W)
See explanation of acronyms below.
1979/08/19 22:49:30 47.67N 69.90W depth: 10.0km Magnitude: 5.0MN
Felt; Charlevoix Seismic Zone, Qué. About 8 K M SE of St-Fidèle,
Qué. Felt in Québec, New Brunswick and Maine. Maximum Intensity
MM V. Minor Damage in the épicentral region. Three damaged chimneys
on the north shore. Followed by at least 6 aftershocks in the first 24
hours (largest is Magnitude MN 3.0). Isoseismals, aftershocks and focal
mechanism are described in:
The Charlevoix Earthquake of 19 August 1979
and its Seismotectonic Environment. Hasegawa and Wetmiller, 1980. Earthquake
Notes, 51, 23-37. See Figure 6 for isoseismals.
1986/01/11 13:30:28 47.70N 70.12W depth: 6.4km Magnitude: 4.0MN
Felt Locally. 25 km NE from La Malbaie, Qué. Foreshock on 860110
at 14:32.
1986/09/19 15:53:01 47.30N 70.32W depth: 21.9km Magnitude: 4.2MN
Largest Charlevoix event since Jan 11,1986 Mag. 4. 25 km W From La Pocatière,
Qué. Felt at La Pocatière and La Malbaie. In Charlevoix County:
felt in Baie-St-Paul, Ile-aux-Coudres, St-Joseph-de-la-Rive, St-Hilarion,
St-Irenée and La Malbaie, Qué. Widely Felt in the Québec
City Area (IV) Near Québec City, in Charlesbourg, Boischatel, Ste-Brigitte-de-Laval
and St-Romuald. People Reported Vibrating Windows,
1989/03/09 09:41:32 47.72N 69.86W depth: 10.5km Magnitude: 4.3MN
Charlevoix-Kamouraska, Qué.; Felt in La Malbaie (IV) and Baie-St-Paul.
Also Felt on the South Shore in Rivière-Ouelle and Kamouraska.
1989/03/11 08:31:52 47.72N 69.87W depth: 10.4km Magnitude: 4.4MN
Charlevoix-Kamouraska, Qué. Felt in La Malbaie, Baie-St-Paul,
on the South Shore and in the Saguenay Region. Close to Mag. 4.3 event
two days earlier.
1991/12/08 03:00:30 47.78N 69.86W depth: 23.2km Magnitude: 4.3MN
25 km W of Riviere-du-Loup, Felt in Charlevoix-Kamouraska, St-Hilarion,
La Malbaie, Cap-à-l'Aigle, Pointe-au-Pic, Clermont, Ile aux Coudres.
Felt at Rivière-du-Loup, Chicoutimi, La Baie, Roberval.
1994/09/25 00:53:28 47.77N 69.96W depth: 17.2km Magnitude: 4.3MN
19 km NE of La Malbaie, Charlevoix-Kamouraska, Qué.; Largely
felt in Charlevoix as well as on the South Shore. In Charlevoix, Reported
felt In: St-Hilarion, Notre-Dame-des-Monts, St-Aimé-des-Lacs, La
Malbaie, Clermont, Pointe-au-Pic, Les Éboulements, Baie-St-Paul,
St-Urbain, and on Ile aux Coudres. Felt as Far East as Northwestern New
Brunswick, as Far North as Les Escoumins, as Far South as to Beauport (1
Report) and as Far West as Jonquiàre.
1997/10/28 11:44:18 47.67N 69.91W depth: 11.3km Magnitude: 4.7MN
Charlevoix Seismic Zone, Felt. Felt in Charlevoix, Rivière-du-Loup,
and in the Québec City, Saguenay and Lac St-Jean regions. 18 km
E from La Malbaie, Qué.
DATE-TIME is in Coordinated Universal Time (UTC). This is approximately
the same as Greenwich Mean Time (GMT) which is 5 hours later than Eastern
Standard
Time (EST) and 8 hour later than Pacific Standard Time (PST). the difference
is 4 and 7 hours respectively when compared with Daylight Saving Time.
LAT and LON: geographic latitude and longitude of the epicentre in decimal
degrees.
DEP: Depth of the focus (hypocentre) given in kilometers below sea level.
A focal depth assigned by a geophysicist is marked as (G).
MAG: Earthquake Magnitude of one of two types: ML (local, the original
Richter magnitude), or MN (Nuttli).