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The magnitude 4.0 earthquake on 28 May 2023 at 11:41pm, whose epicentre was located near the outer northern Melbourne suburb of Craigieburn, was recorded on dozens of seismometers and accelerometers across the state, providing a plethora of data for seismologists to analyse how ground motion changes over distance.
Victoria is one of the most uniformly monitored states in Australia for earthquake activity, growing from a small research project run by the Preston Institute of Technology to a network with statewide earthquake alarm capabilities.
Earthquakes occur when stress build-up in the earth’s crust exceeds the strength of the rock, but tectonic plate motion isn’t the only source of stress. We can change rock stress and trigger earthquakes to occur sooner than they may have otherwise.
What are faults, what do the different types of fault mean, and what has that got to do with the SRC logo?
