Earthquake rocks area

AN earthquake rocked Biggenden last Tuesday, with many residents left wondering the cause of the loud sound and slight shakes.

Biggenden Hardware and Rural Supplies sales assistant Debbie McLennan was serving a customer when the incident happened.

“It sounded like a loud bang,” she said.

“We have a delivery area out the back and it sounded like someone had hit the back of the shop with a forklift.”

But after checking the area Ms McLennan was left wondering what the cause of the bang was.

“The business owner felt it in the floorboards but there was no visible evidence of anything,” she said.

“We always knew this area was known for earthquakes but we have been here for 20 years and never felt anything.”

She said it was the first time she had ever experienced an earthquake.

“I would hate to be involved in a bigger one,” Ms McLennan said.

Seismologist Mike Turnbull's station recorded the incidents.

“We had four over Tuesday and Wednesday,” Mr Turnbull said.

He said the first earthquake reached a magnitude of 2.7 at 1.37pm.

He said there was also a magnitude 1.8 aftershock at 4.20pm and a 1.9 magnitude at 6.15pm.

The following day at 3.10pm there was also a magnitude 1.7 aftershock.

“They all occurred 10 to 15km west of Biggenden up in the Degilbow Ranges,” he said.

“It's not unusual for earthquakes there.”

Mr Turnbull said the earthquakes were caused by a build-up of stress 10km under the ground.

“The first one releases energy and there was still energy left, so that's why there were aftershocks,” he said.

The seismologist said people could expect small aftershocks over the coming weeks.

“There certainly won't be anything bigger,” he said.

Mr Turnbull said it was better to have frequent tremors in the area.

“As long as we get little ones it releases the pressure in the crust and reduces the likelihood of a big one.”

Mr Turnbull said reports were made of minor structural damage at Biggenden.

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