Extreme Earthquakes and Tsunamis These two extreme events are of course related, and are equal partners in this book. We explain the geology of earthquakes, along with the effects of a sequence of shocks; typical rescue operations and the technology used for these; and how earthquakes may be predicted and buildings made to withstand them. We look at the Boxing Day Tsunami of 2004 in detail and methods for predicting such events together with ways of preventing them from becoming worse in future.