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Don Turcotte discussed a broad range of topics relating
earthquakes to physics. He emphasized the statistical behavior of
aftershocks. In particular he showed a universal empirical scaling
law for aftershocks that could be derived from damage mechanics.
He also considered inter event time statistics and argued that
simulations and real data favored the Weibull (stretched
exponential) distribution. He pointed out that this distribution
may be a universal feature of complexity.
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