Some Aspects of L sub g and P sub g Propagation (Some Aspects of Lg and Pg Propagation)
TELEDYNE GEOTECH ALEXANDRIA VA SEISMIC DATA ANALYSIS CENTER
Pagination or Media Count:
L sub g and P sub g P wavetrains consist of S and P waves trapped in the continental crust. The modal structure of these waves can be approximated from ray-tracing and Brunes 1964 constructive interference criteria for normal modes. Ray theory arguments show that the modes involved in L sub g and P sub g propagation are extremely sensitive to internal random inhomogeneities in the crust and small deviations of the free surface or the Moho from plane parallel surfaces.