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UTC time | 2016-12-25 14:22:27 |
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ISC event | 609939179 |
USGS- ANSS | ComCat |
Local date | December 25, 2016 |
Local time | 11:22 UTC-3 |
Magnitude | 7.6 Mw [1] |
Depth | 34.6 km ( USGS) [1] |
Epicenter | 43°24′22″S 73°56′28″W / 43.406°S 73.941°W |
Type | Thrust fault |
Max. intensity | MMI VIII (Severe) |
Aftershocks | > 30 |
Casualties | 0 |
The 2016 Chiloé earthquake with a magnitude of Mww 7.6 struck 225 kilometres (140 mi) south-west of Puerto Montt in southern Chile at 11:22 local time, 25 December. [1] [2] The earthquake triggered a tsunami warning on coasts located up to 1,000 kilometres (620 mi) from the quake's epicentre, generating massive evacuation across the Greater Chiloé Island, after advice from the Chilean government. [2] Although there was damage in some parts of the island, the government reported no casualties.
The earthquake occurred as a result of shallow thrust faulting in southern Chile. At the location of the earthquake, the oceanic Nazca plate converges with and subducts beneath the South America plate in an east-northeast direction, at a rate of approximately 73 mm/yr. The location, depth and shallow thrusting focal mechanism solution [3] all indicate this earthquake likely occurred on the subduction zone interface. [1]
A tsunami with a maximum height of 0.44 m (1.4 ft) was observed on Chiloé Island. [4]