- 1.
- Proving that shallow-origin FEAVO anomalies are visible in the angle domain and wave-equation methods correctly handle the deep-origin FEAVO effects in synthetic data. That was first accomplished by Vlad and Biondi (2002) and in this paper I present some improved results.
- 2.
- Proving that the anomalies can be extracted in the angle domain. I will show that in the case of simple velocity distributions, the shape of the anomalies is described by very simple analytical formulas and I will discuss ways to extract them.
- 3.
- Proving that the extracted anomalies can be transformed back to the initial domain, updating the guess. In particular, that the linearized downward continuation does not render FEAVO effects unrecognizable.

- Shallow-origin FEAVO effects
- Deep-origin FEAVO effects
- Extracting FEAVO effects in angle gathers
- Linearized downward continuation preserves the FEAVO effects

11/11/2002