| Popis: |
The objective of the presented paper is to compare two spatial modelling approaches for the boundary surfaces of a geological subsurface structure, where the exact depth locations of the modelled horizons are known only at sampled locations in the borehole intersections. The paper aims at two approaches: (1) traditional sequential modelling of each horizon or the layer thicknesses separately and (2) global approach based on multivariate modelling of each zone thicknesses simultaneously to keep the relationships between the internal zones and the total formation thickness of a subsurface structure. The experimental comparison of the sequential and global methods is performed on a simulated artificial model of the geological subsurface structure, which is used as a true reality, completely known throughout the estimated area. The model is used to compare obtained results of the different estimation approaches. The estimations are performed using an isotopic set of the depth and zone thickness variables, derived from the simulated geological structure. |
