An M5.6 earthquake (recently downgraded to M5.3) has shaken homes from Albany to Perth. The quake struck just before 1pm about 58km south-south-west of Kojonup, according to the USGS — the seventh earthquake to hit WA this month, and the third this week.
A 3.5 struck off the coast of Albany on Wednesday, while a 3.4 hit Walpole on Thursday.
Senior Geoscience Australia seismologist Phil Cummins said of this latest quake, “It is quite a large earthquake, it is large enough to cause damage but it’s unlikely to have done so because it occurred in a relatively remote area.”
Mr Cummins noted the earthquake was “uncommonly large.”
“You would expect to get a 5.6 maybe once every couple of years throughout Australia,” he added.
— Bureau of Meteorology, Australia (@BOM_au) September 16, 2018
The BOM said there was no tsunami threat.
The Australian Seisometers in Schools program tweeted that the tremor had been recorded on several of its devices.
Check out the #earthquake in WA on the @AusisEdu seismometers. The closest school that was recording at the time was in Albany 119km SE. But we also have a school to the West and North pic.twitter.com/keRQcW9Zzv
— AuSIS (@AusisEdu) September 16, 2018
The recent seismic uptick is likely attributed to the recent drop-off in solar activity, and the increase in Galactic Cosmic Rays penetrating silica-rich magma.
Check out this link for more info: https://principia-scientific.org/do-cosmic-rays-trigger-earthquakes-volcanic-eruptions/
[Thanks to Geoff for the heads-up]