Synthetic Seismogram Modeling.

Applications of synthetic seismogram modeling are the subject of two papers which have been or will be shortly published and which are reproduced in this report. Reflectivity method synthetic seismogram calculation utilizing a modified reflectivity code incorporating correct treatment of the free surface, non-zero depth of burial of the source, anelasticity (Q-1) of the layered medium and realistic sources results in a useful modeling procedure which is capable of application to complex real-data situations. The results of calculations for continental crustal and upper mantle structures yields information on the velocity and Q structure of the upper mantle and the wave propagation characteristics of several phase types including head waves, (such as P sub n), guided wave phases (P and L sub g) and wide angle reflections. (Author)