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| UTC time | 1985-12-23 05:16:05 |
|---|---|
| ISC event | 509142 |
| USGS-ANSS | ComCat |
| Local date | December 22, 1985 (1985-12-22) |
| Local time | 22:16:05 |
| Magnitude | 6.9 Mw |
| Depth | 6.0 km (3.7 mi) |
| Epicenter | 61°31′N 125°17′W / 61.51°N 125.29°W / 61.51; -125.29 |
| Type | Reverse |
| Areas affected | Canada |
| Max. intensity | MMI VI (Strong) |
| Aftershocks | Yes |
| Casualties | None |
The 1985 Nahanni earthquakes is the name for a continuous sequence of earthquakes that began in 1985 in the Nahanni region of the Northwest Territories, Canada. The largest of these earthquakes occurred on December 23, reaching 6.9 on the moment magnitude scale. This is one of the most significant earthquakes in Canada during the 20th century. The earthquakes had a long succession of aftershocks and jolts. The earthquakes amazed both the general public and the earth science community and have been felt in the Yukon, Alberta, Saskatchewan, British Columbia, and southeastern Alaska.
See also
References
- "M 6.9 – Northwest Territories, Canada". United States Geological Survey. Retrieved 6 March 2022.
- ^ Natural Resources Canada: Rock and Roll in the N.W.T.: The 1985 Nahanni Earthquakes Archived 2009-02-10 at the Wayback Machine
- Natural Resources of Canada: Significant Earthquakes in Canada Archived 2008-10-13 at the Wayback Machine
Sources
- Boore, D.; Atkinson, G. M. (1989), "Spectral scaling of the Nahanni earthquakes" (PDF), Bulletin of the Seismological Society of America, 79 (6): 1736–1761, doi:10.1785/BSSA0790061736
- Wetmiller, R. J.; Horner, R. B.; Hasegawa, H. S.; North, R. G.; Lamontagne, M.; Weichert, D. H.; Evans, S. G. (1988), "An analysis of the 1985 Nahanni earthquakes", Bulletin of the Seismological Society of America, 78 (2): 590–616, archived from the original on 2015-09-23, retrieved 2014-04-24
External links
- The International Seismological Centre has a bibliography and/or authoritative data for this event.
| ← Earthquakes in 1985 → | |
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| † indicates earthquake resulting in at least 30 deaths ‡ indicates the deadliest earthquake of the year |
| Earthquakes in Canada | |
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| Historical | |
| 20th Century | |
| 21st Century | |
- 1985 in Canada
- Earthquakes in Canada
- Natural disasters in the Northwest Territories
- 1985 earthquakes
- Natural history of Alaska
- Natural history of Yukon
- Natural history of Alberta
- Natural history of Saskatchewan
- Natural history of British Columbia
- December 1985 in Canada
- 1985 in the Northwest Territories
- Earthquake clusters, swarms, and sequences
- 1985 disasters in Canada
- 1985 natural disasters in the United States