On 16 September 2015, a magnitude 8.3 earthquake occurred at 22:54:33 UTC off the Chilean coast, 229 kilometres northwest of Santiago and at a depth of 25 km.
This subduction quake was the result of thrust faulting at the interface of two major tectonic plates, the so-called megathrust, forcing the Nazca plate to push beneath the South American continent.
The size, location, depth and movement of this event are consistent with a megathrust event in Southern Chile. There is a one in 10 chance that the west coast of Canada will experience a similar megathrust quake—over magnitude 8.4—within 50 years.
Realtime seismic monitoring at ONC
Three Ocean Networks Canada broadband seismometers recorded this event in realtime, 10,500 kilometres from...Read more