Terrain (Subsidence Overlay): Difference between revisions

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[[Terrain]]s in a project have a number of properties which can influence the subsidence calculation. By default, because there is always both surface and underground terrain defined for the entirety of the project area, all cells can be given default values for these subsidence keys. The subsidence terrain keys can all be overridden by overlapping [[Subsidence area (Subsidence Overlay)|Subsidence Areas]].
[[Terrain]]s in a project have a number of properties which can influence the subsidence calculation. The subsidence model only takes properties of underground terrains into account. By default each location in the project area is covered by an underground terrain, and therefore each grid cell of the subsidence model can be given default values for the subsidence keys listed below. The subsidence terrain keys can all be overridden by overlapping [[Water level area (Subsidence Overlay)|Water level areas]].


{{Overlay keys|suppresscategory=true|
{{Overlay keys|suppresscategory=true|

Revision as of 10:27, 10 February 2021

Terrains in a project have a number of properties which can influence the subsidence calculation. The subsidence model only takes properties of underground terrains into account. By default each location in the project area is covered by an underground terrain, and therefore each grid cell of the subsidence model can be given default values for the subsidence keys listed below. The subsidence terrain keys can all be overridden by overlapping Water level areas.

Icon Key Unit Range Description Default value
Subsidencewizard icon clay thickness.png CLAY_THICKNESS m The thickness of the clay layer on the peat, for the calculation of the oxidation component of subsidence. 0.2
Subsidencewizard icon peat fraction.png PEAT_FRACTION The fraction of the soil composed of peat, for the calculation of the compaction component of subsidence. 0.4
Subsidencewizard icon top layer thickness.png TOPLAYER_THICKNESS m The thickness of the layer covering the peat, for the calculation of the compaction component of subsidence. 1.2
Subsidencewizard icon subsidence.png SUBSIDENCE boolean Whether or not subsidence should be calculated for a terrain or in a given area. Subsidence is calculated when the value is not equal to 0. false
Subsidence Module
Benchmarks button.png
Subsidence wiki2.png
Subsidence Overlay
Benchmarks button.png
Getting started button.png
Tutorials
Benchmarks button.png
Overview button.png
Overview
Benchmarks button.png
Theory button.png
Theory
Benchmarks button.png
Benchmarks button.png
Benchmarks
Group
Model
Overview • Calculation • Theory
Water area
Water level • Water level output • Indexation
Ground water level
Hi ground water level • Low ground water level
Subsidence area
Peat fraction • Clay thickness • Toplayer thickness • Subsidence
Terrain
Peat fraction • Clay thickness • Toplayer thickness • Subsidence
Drainage
Drainage
Related
Model attributes • Rasters • Result type •  Subsidence Model


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