Earthquake Seismology Primer for PSHA
Probabilistic seismic hazard analysis draws from a number of different fields of science, one of the most obvious being earthquake seismology. Earthquakes are the cause of the seismic hazard but it does not hurt to remind us again and again that what constitutes the actual threats are effects of earthquakes such as strong ground shaking or tsunamis, not the earthquakes themselves. Here we will concentrate on the shaking hazard. In this chapter I will touch upon those aspects of earthquake physics, wave propagation and site effects, which are needed to understand the essential building blocks of probabilistic seismic hazard models at a very basic level. More advanced aspects are covered in the second part of this book.