“I live in Caloundra on Queensland’s Sunshine Coast,” says reader Rosco.
“On July 30 a 5.3 magnitude earthquake was reported about 100 km offshore. I didn’t notice this one.
“Yesterday, August 1, I certainly noticed the effects of a quake.
“The frame of our house was stressed and moved and settled slightly – not visibly but audibly. I looked towards a large window where the noise appeared to come from but nothing was visible.
“I turned back and noticed the blades of the ceiling fan visibly vibrating in a high frequency. They stopped after about 30 or so seconds.
“Queensland has been rattled by another earthquake — the strongest in almost a century — and two strong aftershocks, two days after a similar-sized quake hit the region.
“Senior seismologist Dan Jaksa said a magnitude-5.7 quake struck at 1:38pm on Saturday, with its epicentre 110 kilometres due east of Fraser Island at a depth of 10 kilometres.”
“This is equivalent to the earthquake that occurred in 1989 in Newcastle, which of course is the most damaging earthquake in Australia’s history,” said Jaksa.
Australia is one of the least active earthquake localities on Earth. The “ring of fire” is many hundreds of kilometres away from Australia.
However eastern Australia, particularly SE Queensland and northern NSW has remnants of ancient huge volcanoes – the Glass House mountains and Mt Warning. Both of these possibly would have been up to 100 kilometres in diameter at near sea level today when active – you can still see the extent of the footprint in the circle of hills surrounding the remaining “plugs”.
“Geoscience Australia has warned more earthquakes may follow.
“Enough already.”
Rosco
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