Modelling techniques for volumetric reconstruction of earth structures

Visualisation of seismic and tomographic results is a crucial point to prop erly understand the models provided by seismic methods. We consider several geostatistical methods (inverse distance weighting, point kriging and math ematical wavelets) to map surface wave tomography in a sparsely sampled stu dy area, and to compare their accuracy and efficiency with proper raypath m ethodologies (inversion and projection onto convex sets). A large set of sy nthetic data is used to estimate seismic velocities before application to r eal data. The contour maps of prediction errors indicate that spatial predi ction and inversion perform similarly. (C) 1999 Elsevier Science Ltd. All r ights reserved.