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1944 Cornwall–Massena earthquake

Earthquake near the New York–Ontario border

Field	Value
title	1944 Cornwall–Massena earthquake
timestamp	1944-09-05 04:38:45
isc-event	899531
anss-url	ushis1479
local-date
local-time	12:38:45 am EDT
map2	{{Location map	New York
lat	44.956
long	-74.833
mark	Bullseye1.png
marksize	40
position	top
width	250
float	right
caption	}}
magnitude	5.8
intensity
depth	20 km
location
type	Oblique thrust
countries affected	United States
Canada
damage	$2 million
casualties	None

|isc-event = 899531 |anss-url = ushis1479 |local-date = |local-time = 12:38:45 am EDT Canada

The 1944 Cornwall–Massena earthquake occurred on September 5 at 12:38:45 am EDT in Massena, New York. It registered 5.8 on the moment magnitude scale and had a maximum Mercalli intensity of VIII (Severe). This area is part of the Saint Lawrence River Valley and the seismically active zone known as the Saint Lawrence rift system. The earthquake is the largest known in New York's recorded history and was felt over great distances.

Damage

The earthquake was felt as far away as New York City, Quebec City, Toronto, and Boston. It caused property damage of $2million (equivalent to $million in ). Several large aftershocks were felt in the general area, described as a low rumble followed by a loud bang.

In the village of Massena, New York, approximately 90percent of its chimneys were destroyed or damaged, along with heavy damage to masonry structures. It was also reported that cracks appeared in the ground around the town of Hogansburg, located 10 mi east of Massena. There were also reports of wells that dried up, and a crack in a deep alluvium north of Massena Center oozed water and sand.

Damage to the city of Cornwall, Ontario, was heavier due to a denser population and its geological location; many structures' foundations were built on sand. Cornwall Collegiate and Vocational School received heavy damage from masonry work falling through the roof of the gymnasium.

Epicenter

The epicenter was located in the vicinity of Massena Center, a small hamlet located 3.5 mi east of the village of Massena. The research was taken from inspecting the local graveyards which had seen the damage done in the form of headstones rotating on their foundations.

In the city of Cornwall, the French Cemetery, Saint Columban's Cemetery, and Woodlawn Cemetery were inspected and found that the headstones had turned counter-clockwise. In the town of Massena, Calvary Cemetery and Massena Center Cemetery were inspected and found the headstones had turned clockwise. Its epicenter was determined to have been located in the hamlet of Massena Center due to the greater damage of the hamlet itself and the severe rotation found in the cemetery. All chimneys received severe damage along with several reports of foundation damage.

References

(2016-02-12). "The 1944 Magnitude 5.8 Cornwall-Massena earthquake". Natural Resources Canada.
[[New York State Geological Survey]]. "New York's largest earthquake". [[New York State Education Department]].

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

earthquakes-in-the-united-states natural-disasters-in-new-york-(state) 1944-earthquakes st.-lawrence-county,-new-york 1944-in-quebec 1944-in-ontario 1944-in-new-york-(state) september-1944-in-canada september-1944-in-the-united-states 1944-disasters-in-canada 1944-natural-disasters-in-the-united-states earthquakes-in-ontario

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