Abstract
AN earth tremor of intensity IV on the modified Morcalli scale (rattling of dishes, windows, doors) shook Ottawa on Friday, October 20. No damage was done. Small earth tremors are known to occur in eastern Canada from Baffin Bay to the Great Lakes including Newfoundland, though the nearest active epicentres to Ottawa appear to be those of Timiskaming (Quebec), where there was a shook on November 1, 1935, and in the region of the Sanguenay River, where shocks have been recorded from as early as February 5, 1663, and continuing to the present time. Further information concerning the shock of October 20 is awaited from the Dominion Observatory at Ottawa.
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Earth Tremor near Ottawa. Nature 144, 748 (1939). https://doi.org/10.1038/144748b0
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DOI: https://doi.org/10.1038/144748b0