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West Australian Earthquake
24 November 2004
A moderate earthquake occurred today in Western Australia.
The earthquake of magnitude 4.4 occurred at 10.42 am local time (1.42 pm ESST).
The event occurred 20 km north of Koorda and was felt in a 150-200 km radius, including Wongan Hills, Burakin, Stoneville, Upper Swan, Bickley and Perth. The earthquake was shallow occurring at approximately 5 km depth.
"So far we have recorded six aftershocks," said Geoscience Australia seismologist Dr Mark Leonard. "The Wheat Belt in Western Australia experiences an event of this magnitude a couple of times per year. In fact there have been a couple of smaller events in this region in the last week. An event of this size is unlikely to cause any damage."
The event was an 'intra-plate' earthquake caused by internal stresses within the Australian Crust.
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