OR/13/001 Glossary: Difference between revisions
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| Digital Terrain Model — Model of surface of the solid Earth (generally the boundary between geosphere and atmosphere or hydrosphere). This is traditionally derived from OS contours and spot heights and should therefore exclude all buildings, trees, hedges, crops, animals etc. Sometimes also referred to as ‘bald earth’ models. | | Digital Terrain Model — Model of surface of the solid Earth (generally the boundary between geosphere and atmosphere or hydrosphere). This is traditionally derived from OS contours and spot heights and should therefore exclude all buildings, trees, hedges, crops, animals etc. Sometimes also referred to as ‘bald earth’ models. | ||
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[[Category:OR/13/001 Model metadata summary report for the Colchester LithoFrame 10-50 model | 13]] | [[Category:OR/13/001 Model metadata summary report for the Colchester LithoFrame 10-50 model | 13]] | ||
Revision as of 10:33, 4 August 2021
| DTM | Digital Terrain Model — Model of surface of the solid Earth (generally the boundary between geosphere and atmosphere or hydrosphere). This is traditionally derived from OS contours and spot heights and should therefore exclude all buildings, trees, hedges, crops, animals etc. Sometimes also referred to as ‘bald earth’ models. |
| Envelope | Defined here as the extent of a geological deposit in plan view (2D): forming a distribution map of the particular unit, a presence — absence map. |
| GSI3D | Geological Surveying and Investigation in 3D. |