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## ABSTRACTMono-frequency Green's functions can be calculated using several frequency domain algorithms. I model the response to a point impulse in 2-D using phase shift, PSPI and implicit finite difference algorithms. All of these algorithms can be implemented in both rectangular and polar coordinates. In polar coordinates an outgoing wavefield can be accurately modeled using a low dip algorithm. This means that high dip accuracy can be obtained at low dip cost. |

- Introduction
- RECTANGULAR COORDINATES
- POLAR COORDINATES
- LATERAL OR ANGULAR VELOCITY VARIATION
- PROBLEMS WITH POLAR COORDINATES
- SOME EXAMPLES
- Conclusions
- REFERENCES
- About this document ...

11/17/1997