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Dunedin was hit by an earthquake at about 7.49pm on 9 April 1974.<ref name=":1">{{Cite news |last=Gorman |first=Paul |date=14 July 2016 |title=Could Dunedin be hit by a large, local earthquake? |url=https://www.stuff.co.nz/science/81763237/could-dunedin-be-hit-by-a-large-local-earthquake |access-date=14 June 2024 |work=[[Stuff (website)|Stuff]]}}</ref> Another earthquake struck the city a few seconds later, which was longer and stronger.<ref name=":1" /> It was magnitude 4.9 (there is scientific debate about whether it was 4.9 or 5.0<ref name=":3" />)<ref name=":2">{{Cite news |date=18 September 2010 |title=The last good shake |url=https://www.odt.co.nz/lifestyle/magazine/last-good-shake |access-date=14 June 2024 |work=[[Otago Daily Times]]}}</ref><ref>{{Cite web |title=Magnitude 4.9, Tue Apr 9 1974 7:49 PM |url=https://www.geonet.org.nz/earthquake/1555709 |access-date=14 June 2024 |website=[[GeoNet]] |language=en}}</ref> and measured VIII (''Severe'') or VII (''Very strong'') on the [[Modified Mercalli intensity scale]] (sources vary),<ref name=":0">{{Cite web |last=Littlewood |first=Matthew |date=8 April 2024 |title=Information event to commemorate earthquake |url=https://www.odt.co.nz/news/dunedin/information-event-commemorate-earthquake |access-date=14 June 2024 |website=[[Otago Daily Times]] |language=en}}</ref><ref name=":3" /> and had an epicentre that was offshore, about 5 kilometres south of the suburb of [[St Clair, New Zealand|St Clair]],<ref name=":1" /> and had a depth of 12 kilometres.<ref name=":2" /> This one caused power outages and chimneys to fall down,<ref name=":1" /> and an overloaded telephone system. It was also reported to have caused broken windows and cracks in "a number" of buildings.<ref name=":2" /> There were several aftershocks with a magnitude 3.7 following this.<ref name=":1" /> It took about 45 minutes for power to be restored to [[Corstorphine, New Zealand|Corstorphine]].<ref name=":2" /> Seismologists are not entirely sure which fault the earthquake was located on.<ref name=":3" /> It is believed to have been on the [[Green Island Fault]], as it is the closest to the epicentre.<ref name=":2" /><ref name=":3" /> |
Dunedin was hit by an earthquake at about 7.49pm on 9 April 1974.<ref name=":1">{{Cite news |last=Gorman |first=Paul |date=14 July 2016 |title=Could Dunedin be hit by a large, local earthquake? |url=https://www.stuff.co.nz/science/81763237/could-dunedin-be-hit-by-a-large-local-earthquake |access-date=14 June 2024 |work=[[Stuff (website)|Stuff]]}}</ref> Another earthquake struck the city a few seconds later, which was longer and stronger.<ref name=":1" /> It was magnitude 4.9 (there is scientific debate about whether it was 4.9 or 5.0<ref name=":3" />)<ref name=":2">{{Cite news |date=18 September 2010 |title=The last good shake |url=https://www.odt.co.nz/lifestyle/magazine/last-good-shake |access-date=14 June 2024 |work=[[Otago Daily Times]]}}</ref><ref>{{Cite web |title=Magnitude 4.9, Tue Apr 9 1974 7:49 PM |url=https://www.geonet.org.nz/earthquake/1555709 |access-date=14 June 2024 |website=[[GeoNet]] |language=en}}</ref> and measured VIII (''Severe'') or VII (''Very strong'') on the [[Modified Mercalli intensity scale]] (sources vary),<ref name=":0">{{Cite web |last=Littlewood |first=Matthew |date=8 April 2024 |title=Information event to commemorate earthquake |url=https://www.odt.co.nz/news/dunedin/information-event-commemorate-earthquake |access-date=14 June 2024 |website=[[Otago Daily Times]] |language=en}}</ref><ref name=":3" /> and had an epicentre that was offshore, about 5 kilometres south of the suburb of [[St Clair, New Zealand|St Clair]],<ref name=":1" /> and had a depth of 12 kilometres.<ref name=":2" /> This one caused power outages and chimneys to fall down,<ref name=":1" /> and an overloaded telephone system. It was also reported to have caused broken windows and cracks in "a number" of buildings.<ref name=":2" /> There were several aftershocks with a magnitude 3.7 following this.<ref name=":1" /> It took about 45 minutes for power to be restored to [[Corstorphine, New Zealand|Corstorphine]].<ref name=":2" /> Seismologists are not entirely sure which fault the earthquake was located on.<ref name=":3" /> It is believed to have been on the [[Green Island Fault]], as it is the closest to the epicentre.<ref name=":2" /><ref name=":3" /> |
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The Earthquake and War Damage Commission received about 3,000 damage claims,<ref name=":1" /> and paid out about $3.5 million (in 2024 terms), which was mainly from falling chimneys and masonry.<ref name=":0" /> Damage was mostly minor.<ref name=":2" /> |
The Earthquake and War Damage Commission received about 3,000 damage claims,<ref name=":1" /> and paid out about $3.5 million (in 2024 terms), which was mainly from falling chimneys and masonry.<ref name=":0" /> Damage was mostly minor.<ref name=":2" /> Claims also included plumbing damage interior plaster being cracked.<ref name=":3" /> |
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On the 50th anniversary of the earthquake an event was held, which included a short film about the earthquake, which was made by a student of Otago University.<ref name=":0" /> |
On the 50th anniversary of the earthquake an event was held, which included a short film about the earthquake, which was made by a student of Otago University.<ref name=":0" /> |
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Revision as of 04:06, 14 June 2024
Earthquake
Dunedin was hit by an earthquake at about 7.49pm on 9 April 1974.[5] Another earthquake struck the city a few seconds later, which was longer and stronger.[5] It was magnitude 4.9 (there is scientific debate about whether it was 4.9 or 5.0[1])[6][7] and measured VIII (Severe) or VII (Very strong) on the Modified Mercalli intensity scale (sources vary),[8][1] and had an epicentre that was offshore, about 5 kilometres south of the suburb of St Clair,[5] and had a depth of 12 kilometres.[6] This one caused power outages and chimneys to fall down,[5] and an overloaded telephone system. It was also reported to have caused broken windows and cracks in "a number" of buildings.[6] There were several aftershocks with a magnitude 3.7 following this.[5] It took about 45 minutes for power to be restored to Corstorphine.[6] Seismologists are not entirely sure which fault the earthquake was located on.[1] It is believed to have been on the Green Island Fault, as it is the closest to the epicentre.[6][1]
The Earthquake and War Damage Commission received about 3,000 damage claims,[5] and paid out about $3.5 million (in 2024 terms), which was mainly from falling chimneys and masonry.[8] Damage was mostly minor.[6] Claims also included plumbing damage interior plaster being cracked.[1]
On the 50th anniversary of the earthquake an event was held, which included a short film about the earthquake, which was made by a student of Otago University.[8]
As of 1990, it is the strongest earthquake to hit Dunedin since it was founded in the 1840s.[1]
References
- ^ a b c d e f g Gorman, Paul (26 September 2020). "The day the earth moved". The Otago Daily Times. Retrieved 14 June 2024.
- ^ Adams, R. D.; Kean, R. J. (30 September 1974). "The Dunedin earthquake, 9 April 1974: Part 1: seismological studies". Bulletin of the New Zealand Society for Earthquake Engineering. 7 (3): 115–122. doi:10.5459/bnzsee.7.3.115-122. ISSN 2324-1543.
- ^ "The Dunedin Earthquake, 9 April 1974 Part 1". New Zealand Society for Earthquake Engineering. Retrieved 14 June 2024.
- ^ "Seismic Risk in the Otago Region" (PDF). Otago Regional Council. March 2005. Retrieved 14 June 2024.
- ^ a b c d e f Gorman, Paul (14 July 2016). "Could Dunedin be hit by a large, local earthquake?". Stuff. Retrieved 14 June 2024.
- ^ a b c d e f "The last good shake". Otago Daily Times. 18 September 2010. Retrieved 14 June 2024.
- ^ "Magnitude 4.9, Tue Apr 9 1974 7:49 PM". GeoNet. Retrieved 14 June 2024.
- ^ a b c Littlewood, Matthew (8 April 2024). "Information event to commemorate earthquake". Otago Daily Times. Retrieved 14 June 2024.