TOMOGRAPHIC ESTIMATION OF THE SPATIAL-DISTRIBUTION OF STATICS

Nonuniqueness associated with statics estimation using reflection or r efraction data alone can be largely overcome by using both data types together. The use of both reflection and refraction data has the effec t of increasing the effective aperture of the observations, and hence generating better constrained velocity estimations. A tomographic inve rsion for velocity allows direct incorporation of both data types and topography in a single formulation. The resulting velocity distributio n can be the basis of static corrections for all angles of propagation .