 Damage inside Inangahua house after the earthquake | |
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| UTC time | 1968-05-23 17:24:18 |
|---|---|
| ISC event | 822588 |
| USGS-ANSS | ComCat |
| Local date | 24 May 1968 |
| Local time | 5:24 am NZST (UTC+12) |
| Magnitude | 7.1 Mw |
| Depth | 12 km (7.5 mi) |
| Epicentre | 41°46′S 172°02′E / 41.76°S 172.04°E |
| Areas affected | New Zealand |
| Max. intensity | MMI X (Extreme) |
| Peak acceleration | ~0.6 g[1] |
| Casualties | 3 dead, 14 injured[2] |
The 1968 Inangahua earthquake struck 25 kilometres (16 mi) west of Murchison, New Zealand, near the small town of Inangahua Junction at 5:24 am NZDT on 24 May 1968. The earthquake had a moment magnitude of 7.1, a local magnitude of 6.7, a surface wave magnitude of 7.4[3] and a maximum Mercalli intensity of X (Exreme). It occurred at a depth of 12 kilometres (7.5 mi), being extremely shallow for an earthquake of its size. It resulted in the deaths of three people, with a further 14 people injured,[4] making it the fifth deadliest earthquake in New Zealand's recorded history (tied with the 1848 Marlborough earthquake). Numerous aftershocks followed the quake, including 15 that were magnitude 5 or greater and occurred within a month.[3]
- ^ Dowrick, D. J.; Sritharan, S. (1993), "Peak ground accelerations recorded in the 1968 Inangauhua earthquake and some attenuation implications" (PDF), Bulletin of the New Zealand National Society for Earthquake Engineering, 26 (3): 354
- ^ Callan, John (24 May 1998). "The day the earth moved in Inangahua". Institute of Geological and Nuclear Sciences Limited. Retrieved 5 November 2018.
- ^ a b "M 7.1, Inangahua, 24 May 1968". GeoNet. GNS Science.
- ^ "Inangahua Earthquake". Retrieved 8 April 2017.