COMPARISON OF RAY-THEORY SYNTHETIC SEISMOGRAMS WITH FINITE-DIFFERENCES IN 2D VELOCITY MODEL UNCONFORMITY

Abstract

Synthetic seismourams for an explosive point source in 2D elastic velocity model UNCONFORMITY are calculated by a 3D ray method and by 2D finite-differences followed by an approximate conversion from a line source to a point source. The demonstrated differences between 3D ray-theory seismograms and converted 2D finite-difference seismograms are discussed in detail.

Keywords

• velocity model
• elastic waves
• synthetic seismograms
• rav-theorv
• finite-differences