Aftershocks in southern Victoria

24 July 2012

Earthquake monitoring at Geoscience Australia.

Earthquake monitoring at
Geoscience Australia.
© Geoscience Australia

Residents in southern Victoria again felt the effects of seismicity in their area with a magnitude 4.4 aftershock on Friday 20 July 2012, following a large earthquake near Moe on 19 June 2012.

The 4.4 aftershock occurred at 7:11pm and is the largest recorded since the original magnitude 5.4 earthquake in June.

“This is the largest aftershock in a series of events that now number in the hundreds following the Moe earthquake in June”, said Jonathan Bathgate, Senior Seismologist.

“The Gippsland area has a long seismic history, particularly in recent years, with ongoing earthquakes in Korumburra since March 2009, and now with the latest activity near Moe”, he said.

“The amount of aftershocks we are seeing is normal following an earthquake above magnitude 5, and we would expect them to continue in the coming months”, said Mr Bathgate.

Data from temporary seismometers deployed in June will be recovered in August and analysed to help identify the active fault system which produced the earthquake. The data will also help to refine local ground motion models for predicting the amount of shaking produced by earthquakes in Victoria.

Did you feel the earthquake?

There is a simple online earthquake report form that can be filled in on the Geoscience Australia website. It includes a series of questions to obtain information about shaking windows, loud noises or any immediate building damage. This information assists seismologists in gaining a greater understanding of this naturally occurring Earth process.

Topic contact: Last updated: October 4, 2013