SUNDAY night's earthquake near Borung is highly likely to be an aftershock from Friday's, Geoscience Australia seismologist Trevor Allen says.

And it is possible there could be more aftershocks.

Mr Allen said the epicentre of Sunday's magnitude 2.6 earthquake was close to the epicentre of Friday's 3.1 magnitude quake.

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He said small aftershocks were quite common following larger events, and it was quite common for aftershocks to occur within a few days of the main shock.

"We know during earthquakes that what happens is that the rocks break and move along a fault line," Mr Allen said.

"This releases a lot of the built-up stress but it doesn't release all of the stress that's been accumulated in the earth's crust. So we can think of aftershocks as more of adjustment events, and they tend to release the residual stresses as rocks settle into their new, stable positions."

The magnitude and frequency of aftershocks tended to decay with time.

"Given we have seen one small aftershock there is certainly a chance there might be further to come," Mr Allen said.

"We can never really say definitively."

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He said reports from people who felt the earthquake on Sunday generally came from within 20 kilometres of the epicentre.

"Over the past 20 years there have been roughly two earthquakes per year within 100 kilometres of the epicentre of last night's earthquake," Mr Allen said.

"That's been of earthquakes magnitude two and larger.

"So, whilst we don't see a lot of earthquakes in the region, they have certainly occurred there in the past."

Earlier

THE earth moved again near Borung at the weekend, with a magnitude 2.6 earthquake recorded on Sunday night.

It follows a magnitude 3.1 earthquake on Friday morning.

Geoscience Australia data showed Sunday's earthquake happened at 9.04pm at a depth of 10 kilometres.

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The coordinates for the epicentre were longitude 143.73 and latitude -36.32.

Friday morning's earthquake was at longitude 142.68 and latitude -36.28.

Geoscience Australia had received six reports from people who felt the latest earthquake, at the time of writing.

It was felt as far as Wedderburn and Fiery Flat.

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Further reports can be made via the Geoscience Australia website.

Geoscience Australia seismologist Trevor Allen on Friday said Victorian earthquakes were the result of the tectonic plate Australia sat on being squeezed.

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