How to add Subsidence (Water Overlay): Difference between revisions

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[[File:Subsidence_attribute.JPG|400px|thumb|left|Create a new attribute containing the recalculated water levels.]]
[[File:Include_subsidence.JPG|400px|thumb|center|Include the subsidence overlay and select the new water level attribute.]]
For the calculation of the effects of a severe rainfall, effects of subsidence can be included, such as the recalculated water levels and the changed ground levels. For now, ground water levels affected by the subsidence are not included.   
For the calculation of the effects of a severe rainfall, effects of subsidence can be included, such as the recalculated water levels and the changed ground levels. For now, ground water levels affected by the subsidence are not included.   


{{Editor steps|title=include subsidence|Add the [[Subsidence_(Overlay)|subsidence overlay]]. Take note of when to use and how to configure the subsidence overlay.|In the [[right panel]], select the "Keys" tab|Select the "Area attribute: output level (m)". Choose a new attribute, for example the WATER_LEVEL_OUTPUT attribute, to write the new water levels to. |In the Rainfall overlay in the [[right panel]], select the "Keys" tab.|Choose the overlay for the subsidence model you want to use in the "Include Subsidence" form.|Also select the newly created attribute containing the water levels in the "Area Attribute: Water Level (m)" form.|Go to the "General" tab and recalculate the grid.}}
{{Editor steps|title=include subsidence|Add the [[Subsidence Overlay]]. Take note of when to use and how to configure the subsidence overlay.|In the [[right panel]], select the "Keys" tab|Select the "Area attribute: output level (m)". Choose a new attribute, for example the WATER_LEVEL_OUTPUT attribute, to write the new water levels to. |In the Rainfall overlay in the [[right panel]], select the "Keys" tab.|Choose the overlay for the subsidence model you want to use in the "Include Subsidence" form.|Also select the newly created attribute containing the water levels in the "Area Attribute: Water Level (m)" form.|Go to the "General" tab and recalculate the grid.}}


Be careful not to write the new water levels calculated in the [[Subsidence_(Overlay)|subsidence overlay]] to the already existing water level attribute, otherwise the subsidence model will be recalculated with incorrect values when refreshing this overlay.


You can play around with the results of the two overlays and compare, for example, two rainfall overlays where one overlay takes the effects of a subsidence model into account and the other overlay shows results without these effects.
<gallery mode="nolines">
File:Subsidence_attribute.JPG|Create a new attribute containing the recalculated water levels.
File:Include_subsidence.JPG|Include the subsidence overlay and select the new water level attribute.
</gallery>


{{Template:Overlay nav}}
{{article end
| notes=* Take care not to set the WATER_LEVEL_OUTPUT [[Overlay Key]] of the [[Subsidence Overlay]] to the same [[Attribute]] as the WATER_LEVEL used as the input for the [[Subsidence Overlay]] itself. Otherwise, the calculation will repeatedly change its own input, leading to inconsistent results.
* By setting up two identical [[Water Overlay]]s, one connected to the [[Subsidence Overlay]] and one not, it's possible to investigate in detail the effects of subsidence on the water system.
| seealso=* [[Water Overlay]]
* [[Subsidence Overlay]]
}}
 
{{Overlay nav}}
{{Water Module buttons}}
{{Water Module buttons}}

Revision as of 06:28, 31 August 2020

For the calculation of the effects of a severe rainfall, effects of subsidence can be included, such as the recalculated water levels and the changed ground levels. For now, ground water levels affected by the subsidence are not included.

How to include subsidence:
  1. Add the Subsidence Overlay. Take note of when to use and how to configure the subsidence overlay.
  2. In the right panel, select the "Keys" tab
  3. Select the "Area attribute: output level (m)". Choose a new attribute, for example the WATER_LEVEL_OUTPUT attribute, to write the new water levels to.
  4. In the Rainfall overlay in the right panel, select the "Keys" tab.
  5. Choose the overlay for the subsidence model you want to use in the "Include Subsidence" form.
  6. Also select the newly created attribute containing the water levels in the "Area Attribute: Water Level (m)" form.
  7. Go to the "General" tab and recalculate the grid.


  • Subsidence attribute.JPG

    Create a new attribute containing the recalculated water levels.

  • Include subsidence.JPG

    Include the subsidence overlay and select the new water level attribute.

Notes

  • Take care not to set the WATER_LEVEL_OUTPUT Overlay Key of the Subsidence Overlay to the same Attribute as the WATER_LEVEL used as the input for the Subsidence Overlay itself. Otherwise, the calculation will repeatedly change its own input, leading to inconsistent results.
  • By setting up two identical Water Overlays, one connected to the Subsidence Overlay and one not, it's possible to investigate in detail the effects of subsidence on the water system.

See also

Overlays
Categorization
Grid • Parent • Result Child • Result Parent • Result type
Default
City
Administrative
Ownership • Ownership Grid • Zipcodes • Zoning • Neighborhoods • Municipalities • Vacancy
Environmental
Heat Stress • Traffic Density • Traffic Noise • Traffic NO2 • Livability
Water
Rainfall • Flooding • Groundwater • Subsidence • Watershed
Grid Calculation
Average • Combo • Distance • Sight Distance • Travel Distance • Inference • Iteration
Geo Data
GeoTIFF • WCS • WMS • Image • Area • Attribute • Function
Topography
Satellite • Digital Surface Model • Digital Terrain Model • Underground • Source
Network
Network Distance • Network Overview • Network Ownership


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