1918 Vancouver Island earthquake

Earthquake in Canada

1918 Vancouver Island earthquake

Vancouver

UTC time| 1918-12-06 08:41:07
ISC event| 913365
USGS-ANSS| ComCat
Local date| December 6, 1918 (1918-12-06)
Local time| 12:41 a.m. PST
Magnitude| 7.2 Mw[1]
Depth| 30 kilometers (19 mi)
Epicenter| 49°26′N 126°13′W﻿ / ﻿49.44°N 126.22°W﻿ / 49.44; -126.22
Type| Strike-slip
Areas affected| British Columbia
Canada
Max. intensity| MMI VII (Very strong)

The 1918 Vancouver Island earthquake occurred in British Columbia, Canada at 12:41 a.m. Pacific Standard Time on December 6.[1] The earthquake was most likely of the strike-slip type, and was estimated to have a maximum perceived intensity of VII (Very strong) on the Mercalli intensity scale. The epicenter was located east of the Stewardson inlet on the west coast of Vancouver Island, with damage occurring at the Estevan Point lighthouse on the Hesquiat Peninsula.[2] The event registered 7.2 on the moment magnitude scale and was felt as far as northern Washington state and the interior of British Columbia.

The earthquake took place in the vicinity of the Cascadia subduction zone where the Juan de Fuca plate and the Explorer plate are being subducted under the North American plate at a rate of 4 centimeters (1.6 in) and less than 2 centimeters (0.79 in) per year respectively, but the event was a crustal intraplate earthquake and was produced from the complicated interaction between the plates in the area. The source of the earthquake was the Nootka transform fault, which separates the Juan de Fuca and Explorer plates and has been the origin of at least five additional moderate to large events since 1918.[3]

## See also

[edit]

* List of earthquakes in 1918
* List of earthquakes in Canada
* 1946 Vancouver Island earthquake

## References

[edit]

1. ^ a b "The M7 Vancouver Island Earthquake of December 6, 1918". Natural Resources Canada. Retrieved March 12, 2012.
2. ^ Cassidy, Ellis & Rogers 1988, p. 626
3. ^ Cassidy, Ellis & Rogers 1988, p. 617

Bibliography

* Cassidy, John F.; Ellis, Robert M.; Rogers, Garry C. (April 1988), "The 1918 and 1957 Vancouver Island earthquakes", Bulletin of the Seismological Society of America, 78 (2), Seismological Society of America: 617–635

## External links

[edit]

* The International Seismological Centre has a bibliography and/or authoritative data for this event.

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Earthquakes in the 1910s

1910|

* Taiwan (8.1, Apr 12) †
* Costa Rica (6.4, May 4) †‡

1911|

* Kebin (7.7, Jan 3) †‡
* Sarez (7.4, Feb 18) †
* Michoacán (7.6, June 7) †
* Kikai Island (8.1, June 15)
* Guerrero (7.6, Dec 16)

1912|

* Maymyo (7.9, May 23)
* Mürefte (7.4, Aug 9) †‡
* Acambay (6.9, Nov 19) †

1913|

* Asmara (?.?, Feb 27)
* Sulawesi–Mindanao (7.9, Mar 14)
* Eshan (6.7, Dec 21) †‡

1914|

* Reno (6.0, (Feb 18), 6.4 (April 24))
* Senboku (7.0, Mar 15)†
* Burdur (7.0, Oct 4)†‡
* East Cape (6.6, Oct 7)

1915|

* Avezzano (6.7, Jan 13) †‡
* Imperial Valley (6.3, June 23)
* Asmara (5.8, Sept 23)
* Pleasant Valley (6.8, Oct 2)

1916|

* Rimini (5.3, May 17)
* Rimini (5.3, Aug 16)

1917|

* Bali (6.6, Jan 20) †‡
* San Salvador (6.7, Jun 7) †
* Samoa (8.5, Jun 25)
* Sichuan (7.0, Jul 30) †
* Nantou (6.8, Aug 28) †
* Guatemala (5.6, Dec 25) †

1918|

* Shantou (7.2, Feb 13) †‡
* San Jacinto (6.7, April 21)
* Celebes Sea (8.3, Aug 15) †
* Kuril Islands (8.1, September 8)
* San Fermín (7.5, Oct 11) †
* Vancouver Island (7.2, Dec 6)

1919|

* Ayvalık (7.0, Nov 18) †‡

† indicates earthquake resulting in at least 30 deaths
‡ indicates the deadliest earthquake of the year

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Earthquakes in Canada

Historical|

* 1663 Charlevoix
* 1700 Cascadia
* 1732 Montreal
* 1870 Charlevoix
* 1872 North Cascades

20th Century|

* 1918 Vancouver Island
* 1925 Charlevoix–Kamouraska
* 1929 Grand Banks
* 1933 Baffin Bay
* 1935 Timiskaming
* 1944 Cornwall–Massena
* 1946 Vancouver Island
* 1949 Queen Charlotte Islands
* 1985 Nahanni
* 1988 Saguenay
* 1989 Ungava

21st Century|

* 2000 Kipawa
* 2001 Nisqually
* 2007–2008 Nazko
* 2010 Central Canada
* 2012 Haida Gwaii
* 2013 Craig

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