OR/14/029 Rockhead elevation model: Difference between revisions
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A rockhead elevation surface derived from the combined base of all modelled superficial and artificial units has an elevation range of +254.87m OD to -25.24m OD (Figure 13). This rockhead elevation surface has a cell size of 100m and caps the bedrock part of the geological model. It was generated by calculating in GSI3D using the complete superficial and anthropocene model on a tile by tile basis, buffering each area by 200m to ensure a small overlap. The resulting rockhead surfaces were combined into the single surface in GIS. Where modelled anthropocene and/or superficial deposits are absent, this rockhead elevation surface corresponds to the Digital Terrain Model. This surface was calaculated in GSi3D and exported to GOCAD''® ''in order to cap the model of the faulted bedrock units. | A rockhead elevation surface derived from the combined base of all modelled superficial and artificial units has an elevation range of +254.87m OD to -25.24m OD (Figure 13). This rockhead elevation surface has a cell size of 100m and caps the bedrock part of the geological model. It was generated by calculating in GSI3D using the complete superficial and anthropocene model on a tile by tile basis, buffering each area by 200m to ensure a small overlap. The resulting rockhead surfaces were combined into the single surface in GIS. Where modelled anthropocene and/or superficial deposits are absent, this rockhead elevation surface corresponds to the Digital Terrain Model. This surface was calaculated in GSi3D and exported to GOCAD''® ''in order to cap the model of the faulted bedrock units. | ||
[[Image:029_fig13.jpg|thumb|center|600px|Figure 13. 3D view of the calculated rockhead elevation surface calculated as an ascii grid with a 100m cell size. The highest elevations are in red and the lowest in blue, vertical exaggeration is x 10.]] | |||
[[Category:OR/14/029 The London Basin superficial and bedrock LithoFrame 50 model| 06]] | [[Category:OR/14/029 The London Basin superficial and bedrock LithoFrame 50 model| 06]] | ||
Revision as of 13:35, 9 March 2015
A rockhead elevation surface derived from the combined base of all modelled superficial and artificial units has an elevation range of +254.87m OD to -25.24m OD (Figure 13). This rockhead elevation surface has a cell size of 100m and caps the bedrock part of the geological model. It was generated by calculating in GSI3D using the complete superficial and anthropocene model on a tile by tile basis, buffering each area by 200m to ensure a small overlap. The resulting rockhead surfaces were combined into the single surface in GIS. Where modelled anthropocene and/or superficial deposits are absent, this rockhead elevation surface corresponds to the Digital Terrain Model. This surface was calaculated in GSi3D and exported to GOCAD® in order to cap the model of the faulted bedrock units.
