Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10120091 | Physics and Chemistry of the Earth, Parts A/B/C | 2005 | 14 Pages |
Abstract
This article compares two methods to interpolate grain size distributions to a 3D model (grid-size 25Â ÃÂ 25Â ÃÂ 0.2Â m) of the upper 5Â m of the riverbed of three lower Rhine distributaries in The Netherlands. These models have been used as input for morphological predictions of the effects of maintenance and restructuring plans of the riverbed. Both methods use field data from seismic surveys and vibrocore borings to construct a 2.5 D layer model. Full grain size distributions within grid cells of 25Â ÃÂ 25Â ÃÂ 0.2Â m have been obtained by interpolation within layers, using 3D Kriging, thereby analyzing spatial variability over different scales. In the first method measured grain size distributions have been interpolated. The second method uses measured grain size distributions and synthetic grain size distributions from estimated soil sample parameters (silt content, gravel content, sand median). The combination of synthetic and measured GSD strongly enhances the spatial variation in the interpolation result and prevents a misrepresentation of lithologies in the model.
Keywords
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geochemistry and Petrology
Authors
S.H.L.L. Gruijters, D. Maljers, J.G. Veldkamp,