High ground water prequel (Subsidence Overlay): Difference between revisions

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The initial high groundwater level in the Subsidence model can be initialized using a [[GeoTiff]].
{{Overlay prequels|overlay=Subsidence|allowselflinks=true|
In the Subsidence Overlay Wizard it is possible to select one of the Default data provided, to import a [[GeoTiff]] or to do nothing and proceed with the next step.
<onlyinclude>{{Overlay prequels|type=row|overlay=Subsidence
 
  |prequel=HIGH_GROUND_WATER_LEVEL
 
  |name=High ground water
{{GeoTiffSpec
  |unit=m
|title=High Groundwater
  |description=The depth of the ground water level, relative to the [[Elevation model|surface]]
|description=The depth of the ground water level, relative to the [[elevation model (Water Overlay)|surface]].
  |range=
|value=High Groundwater level
  |defaultvalue=
|unit=m below terrain height
}}</onlyinclude>
}}
}}
The initial high groundwater level in the [[Subsidence Module]] at the start of the simulation can be initialized using a prequel [[Grid Overlay]].
In the Subsidence Overlay Wizard it is possible to select one of the Default datasets provided, to import and create a [[GeoTIFF Overlay]] or to do nothing and proceed with the next step.


'''Default data'''
==Default data==
For the Netherlands, a number of groundwater GeoTiffs are provided by default, based on data provided by The Netherlands Hydrological Instrumentarium:
For the Netherlands, a number of groundwater [[GeoTIFF|GeoTIFFs]] are provided by default, based on data provided by The Netherlands Hydrological Instrumentarium:
* NL_GHG_kk-nhi (Average highest watertable)
* NL_GHG_kk-nhi (Average highest watertable)
* NL_GLG_kk-nhi (Average lowest watertable)
* NL_GLG_kk-nhi (Average lowest watertable)
* NL_GVG_kk-nhi (Average spring watertable)
* NL_GVG_kk-nhi (Average spring watertable)


==Notes==
These GeoTIFFs can be linked to the Subsidence Overlay using a [[GeoTIFF Overlay]] and referencing it with this prequel.
* When a groundwater GeoTiff is not configured for the Water Overlay, the watertable is initialized using the [[water level (Water Overlay)|WATER_LEVEL]] attribute of the [[Water level area (Water Overlay)|water level area]] instead. For locations without water level areas, the water table is set to one meter below the [[elevation model (Water Overlay)|surface]].
 
==How-to's==
 
==See also==


{{article end
|notes=
* Specified as m below terrain height
* When no prequel is specified, the water levels of [[Ground_water_level_area_(Subsidence_Overlay)|groundwater level areas]] are used to initialize groundwater levels.
|seealso=
* [[Ground water level area (Subsidence Overlay)]]
}}
{{SubsidenceOverlay raster nav}}
{{SubsidenceOverlay raster nav}}

Latest revision as of 13:53, 23 February 2023

Name Prequel Underlying data Unit Range No data Description
High ground water HIGH_GROUND_WATER_LEVEL Subsidence Prequel m The depth of the ground water level, relative to the surface

The initial high groundwater level in the Subsidence Module at the start of the simulation can be initialized using a prequel Grid Overlay. In the Subsidence Overlay Wizard it is possible to select one of the Default datasets provided, to import and create a GeoTIFF Overlay or to do nothing and proceed with the next step.

Default data

For the Netherlands, a number of groundwater GeoTIFFs are provided by default, based on data provided by The Netherlands Hydrological Instrumentarium:

  • NL_GHG_kk-nhi (Average highest watertable)
  • NL_GLG_kk-nhi (Average lowest watertable)
  • NL_GVG_kk-nhi (Average spring watertable)

These GeoTIFFs can be linked to the Subsidence Overlay using a GeoTIFF Overlay and referencing it with this prequel.

Notes

  • Specified as m below terrain height
  • When no prequel is specified, the water levels of groundwater level areas are used to initialize groundwater levels.

See also

Subsidence Module
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Subsidence Overlay
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Tutorials
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Overview
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Theory button.png
Theory
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Benchmarks
Group
Model
Overview • Calculation • Theory
Prequels
High ground water prequel • Low ground water prequel • Clay thickness prequel
Related
Features • Model attributes •  Subsidence Model • Result type


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