1949 Queen Charlotte Islands earthquake
E196200
The 1949 Queen Charlotte Islands earthquake was a powerful magnitude 8.1 megathrust event off the coast of British Columbia, Canada, that ranks among the largest recorded earthquakes in North America.
All labels observed (1)
| Label | Occurrences |
|---|---|
| 1949 Queen Charlotte Islands earthquake canonical | 1 |
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
earthquake
ⓘ
interplate earthquake ⓘ megathrust earthquake ⓘ |
| casualties | 0 direct deaths reported ⓘ |
| continent | North America ⓘ |
| country | Canada ⓘ |
| currentRegionName | Haida Gwaii ⓘ |
| damage | moderate structural damage in Queen Charlotte Islands communities ⓘ |
| date | 1949-08-22 ⓘ |
| day | 22 ⓘ |
| epicenterRegion |
Haida Gwaii
ⓘ
surface form:
Haida Gwaii region
Haida Gwaii ⓘ
surface form:
Queen Charlotte Islands
off the west coast of Graham Island ⓘ |
| faultType | strike-slip ⓘ |
| feltIn |
Alaska
ⓘ
British Columbia ⓘ Oregon ⓘ Washington State, United States ⓘ
surface form:
Washington State
Western Canada ⓘ
surface form:
western Canada
|
| followedBy | 1964 Alaska earthquake ⓘ |
| locatedIn |
Pacific Northwest
ⓘ
Queen Charlotte Fault ⓘ
surface form:
Queen Charlotte Fault zone
off the coast of British Columbia ⓘ |
| magnitude | 8.1 ⓘ |
| maximumMercalliIntensity | VIII ⓘ |
| maximumMercalliIntensityDescription | Severe ⓘ |
| momentMagnitudeScale | 8.1 ⓘ |
| month | August ⓘ |
| notableFeature |
among the largest instrumentally recorded strike-slip earthquakes
ⓘ
long strike-slip rupture along the Queen Charlotte Fault ⓘ |
| plate1 | Pacific Plate ⓘ |
| plate2 | North American Plate ⓘ |
| precededBy | 1946 Vancouver Island earthquake ⓘ |
| rankAmongNorthAmericanEarthquakes | one of the largest recorded earthquakes in North America ⓘ |
| rankInCanada | one of the largest recorded earthquakes in Canadian history ⓘ |
| recordedBy |
Canadian seismological networks
ⓘ
United States Geological Survey ⓘ |
| regionNameAtTime |
Haida Gwaii
ⓘ
surface form:
Queen Charlotte Islands
|
| ruptureLength | approximately 500 km ⓘ |
| ruptureType | right-lateral strike-slip ⓘ |
| surfaceWaveMagnitude | 8.1 ⓘ |
| tectonicSetting |
boundary between the Pacific Plate and the North American Plate
ⓘ
transform plate boundary ⓘ |
| timeLocal | 1949-08-21 late evening local time ⓘ |
| timeUTC | 1949-08-22T08:01:00Z ⓘ |
| tsunami | yes ⓘ |
| tsunamiGenerationMechanism | seafloor displacement along plate boundary ⓘ |
| year | 1949 ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.