Abstract
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.
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Acknowledgments
The authors are thankful to Nafta, a.s. Company for providing funding for Isatis software licencing. Funding for this study was provided by Slovak Scientific Grant Agency VEGA 1/0828/14.
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Vizi, L., Benčoková, M. (2015). Experimental Comparison of Sequential and Global Modelling Methods of Subsurface Horizon Sequence. In: Růžičková, K., Inspektor, T. (eds) Surface Models for Geosciences. Lecture Notes in Geoinformation and Cartography. Springer, Cham. https://doi.org/10.1007/978-3-319-18407-4_22
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DOI: https://doi.org/10.1007/978-3-319-18407-4_22
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