Synthetic seismograms.

Abstract

We review in some detail a recent series of source studies based on body wave data which has led to a completely new outlook on the relative importance of the rupture process versus the interaction of the seismic wave field with the earth's free surface in determining the body waveform. These studies produced reliable source models which were then used to study the effects of the shallow velocity structure of the upper mantle and of the shallow velocity structure near the source. We shall also discuss these results.-from Author