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Cascadia Historic Earthquake Catalog, 1793-1929
Covering Washington, Oregon and Southern British Columbia

Provided by: The Pacific Northwest Seismic Network
About the Cascadia Historic Earthquake Catalog       One-line catalog format

1793-1849 .... 1850s .... 1860s .... 1870s .... 1880s .... 1890s .... 1900s .... 1910s .... 1920s .... 1930s (not complete) .... Other Cascadia Catalogs

  
Individual Event Report
Event #576 - Summary, and parameter estimates with source IDs                                           
Known only from Milne, who cites the Colonist. Newspapers have not been researched.
TIME LOCATION MAGNITUDE MAX. INTENSITY FELT AREA
YR MO DAY HR MIN AM/PM Time
Type
LAT(N) LON(W) DEP
(km)
MAG Mag
Type
Felt
Plc.
Felt
St.
Inten-
sity
Int.
Type
Felt
Area
Felt
Area
Int.
Felt
Area
Units
1922  12  27  30            Victoria  B.C.           
MILNE - 1471 - - - MILNE - 1471 -

Underlying Source Material
Source ID Publication Pub Date Pub Details
6002  Daily Colonist  1922  Thursday December 28, 1922 p.3, c.4 
Transcription: ANOTHER EARTHQUAKE STARTLES VICTORIANS

Mr. F. Napier Denison Places Centre of Disturbance Felt Here Somewhere in Haro Straits.

A majority of residents in the Victoria West, Dallas Road and Oak Bay districts felt the earth tremor which occurred here at 6:28 last evening, and the Meteorological Bureau at Gonzales Heights, as well as The Colonist office, were besieged with inquiries as to the centre of the disturbance.

Mr. F. Napier Denison, superintendent of the bureau, examined the seismographic instruments immediately and found that the duration of the tremor was only about two seconds, although it was very clearly defined. On making further inquiries through the wireless instrument at Gonzales Heights, he learned that there had been no tremor recorded either at Estevan or Point Grey, Nanaimo or Vancouver. This narrowed the area of the disturbance and Mr. Denison finally decided that the centre of the trouble must have been somewhere in the neighborhood of Victoria, probably in the Haro Straits, which connect the Straits of Georgia and Juan de Fuca.

"It is just possible that there may be a slight crack in the earth's mantle just under the sea, " explains Mr. Denison. The coastline hereabouts in certain places has evidently been experiencing an abnormal strain, and the tremor probably indicates the cracking which will be the symptom of relief.

According to sources of the telephoned queries the tremor was felt quite distinctly not only in every section of Victoria, but right out through the Gordon Head district as far north at least as James Island.
 
Source ID Publication Pub Date Pub Details
1471  Milne, W.G., 1956, Seismic Activity in Canada, west of the 113th meridian 1841-1951: Canada Dominion Obs. Pub., V. 18, No. 7, pp. 119-146  1957   
Transcription: 1922 DECEMBER 27. 6:30 p.m. Denison suggested that the epicentre was under Haro Strait. The tremor was felt in Victoria and Vancouver but no damage was reported Col.
 


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