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* The earthquakes listed above have epicentres on the Australian mainland or adjacent to the Australian coast. Although Australia is not on the edge of a plate, the continent experiences earthquakes because the Indo-Australian plate is being pushed north and is colliding with the Eurasian, Philippine and Pacific plates.More information about these historical events can be viewed through the earthquake storymap. This causes the build up of mainly compressive stress in the interior of the Indo-Australian plate which is released during earthquakes.Earthquake magnitude was traditionally measured on the Richter scale.
These are put into a formula which converts them to a magnitude, which is a measure of the energy released by the earthquake.Earthquakes are the vibrations caused by rocks breaking under stress.The underground surface along which the rock breaks and moves is called a fault plane.Geoscience Australia monitors, analyses and reports on significant earthquakes to alert the Australian Government, State and Territory Governments and the public about earthquakes in Australia and overseas.which means to shake or move violently and was later applied to the science and equipment associated with earthquakes.