Model attributes (Subsidence Overlay): Difference between revisions

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The subsidence overlay also has [[attribute]]s. All attributes have a default value, but can be changed to configure the subsidence calculation.
The subsidence overlay also has [[attribute]]s. All attributes have a default value, but can be changed to configure the subsidence calculation.
{| class="wikitable"
 
! Attribute
{{overlay attributes|suppresscategory=true|allowselflinks=true|
! Description
{{:Parameter a (Subsidence Overlay)}}
! Default value
{{:Parameter b (Subsidence Overlay)}}
! Remark
{{:Parameter c (Subsidence Overlay)}}
|-
{{:Climate start temp (Subsidence Overlay)}}
| [[Parameter a (Subsidence Overlay)|PARAMETER_A]]
{{:Climate final temp (Subsidence Overlay)}}
| The A parameter in the [[#Oxidation Calculation|Oxidation formula]].
{{:Climate final temp (Subsidence Overlay)}}
| 0.023537
{{:Climate soil temp factor (Subsidence Overlay)}}
| This value is recalculated each 1-year time step of the calculation.
{{:Default clay thickness (Subsidence Overlay)}}
|-
{{:Default peat fraction (Subsidence Overlay)}}
| [[Parameter b (Subsidence Overlay)|PARAMETER_B]]
{{:Default top layer thickness (Subsidence Overlay)}}
| The B parameter in the [[#Oxidation Calculation|Oxidation formula]].
{{:Hi passive drainage (Subsidence Overlay)}}
| 0.01263
{{:Low passive drainage (Subsidence Overlay)}}
|
{{:Years (Subsidence Overlay)}}
|-
}}
| [[Parameter c (Subsidence Overlay)|PARAMETER_C]]
| The C parameter in the [[#Oxidation Calculation|Oxidation formula]].
| 0.00668
|
|-
| [[Climate start temp (Subsidence Overlay)|CLIMATE_START_TEMP]]
| The average temperature in the first year of the simulation.
| 10.1
|
|-
| [[Climate final temp (Subsidence Overlay)|CLIMATE_FINAL_TEMP]]
| The average temperature in the final year of the subsidence simulation.
| 10.7
|
|-
| [[Climate oxidation (Subsidence Overlay)|CLIMATE_OXIDATION]]
| The oxidation factor used to recalculate the climate values between 1-year calculation steps.
| 0.67
|
|-
| [[Climate soil temp factor (Subsidence Overlay)|CLIMATE_SOIL_TEMP_FACTOR]]
| The soil temperature factor used to recalculate the climate values between 1-year calculation steps.
| 0.5
|
|-
| [[Default clay thickness (Subsidence Overlay)|DEFAULT_CLAY_THICKNESS]]
| If no clay thickness value can be found in a particular grid cell, this value is used instead.
| 0.2
|
|-
| [[Default peat fraction (Subsidence Overlay)|DEFAULT_PEAT_FRACTION]]
| If no peat fraction value can be found in a particular grid cell, this value is used instead.
| 0.4
|
|-
| [[Default top layer thickness (Subsidence Overlay)|DEFAULT_TOP_LAYER_THICKNESS]]
| If no top layer value can be found in a particular grid cell, this value is used instead.
| 5.0
|
|-
| [[Hi passive drainage (Subsidence Overlay)|HI_PASSIVE_DRAINAGE]]
| When passive drainage is applied, the GHG (highest ground water level) is increased by this amount.
| -0.10
| Due to definitions "Increase" means that the distance between the surface and this ground water level increases. The default value causes the ground water level to come closer to the surface.
|-
| [[Low passive drainage (Subsidence Overlay)|LOW_PASSIVE_DRAINAGE]]
| When passive drainage is applied, the GLG (lowest ground water level) is increased by this amount.
| 0
| Due to definitions "Increase" means that the distance between the surface and this ground water level increases. The default value does not affect the ground water level.
|-
| [[Years (Subsidence Overlay)|YEARS]]
| The amount of years to simulate during the calculation, in 1-year steps. It's possible to set this value anywhere between 1 to 1000.
| 30
| This attribute is linked to one of the keys of the overlay. When this attribute is changed the key is changed as well.
|-
|}


{{SubsidenceOverlay_model_attribute_nav}}
{{SubsidenceOverlay_model_attribute_nav}}
[[Category:Subsidence Module Theory]]
[[Category:Subsidence Module Theory]]

Revision as of 12:30, 8 February 2021

The subsidence overlay also has attributes. All attributes have a default value, but can be changed to configure the subsidence calculation.

Parameter b (Subsidence Overlay) Parameter c (Subsidence Overlay)

Icon Attribute Unit Range Description Default value
Subsidencewizard icon parameter a.png A The A parameter in the Oxidation formula. 0.023537
Subsidencewizard icon start temp.png CLIMATE START TEMP °C The average temperature in the first year of the subsidence simulation. 10.1
Subsidencewizard icon final temp.png CLIMATE FINAL TEMP °C The average temperature in the final year of the subsidence simulation. 10.7
Subsidencewizard icon final temp.png CLIMATE FINAL TEMP °C The average temperature in the final year of the subsidence simulation. 10.7
Subsidencewizard icon temp factor.png CLIMATE_SOIL_TEMP_FACTOR The soil temperature factor used to recalculate the climate values between 1-year calculation steps. 0.5
Subsidencewizard icon clay thickness.png DEFAULT_CLAY_THICKNESS m If no clay thickness value can be found in a particular grid cell, this value is used instead 0.2
Subsidencewizard icon peat fraction.png DEFAULT_PEAT_FRACTION If no peat fraction value can be found in a particular grid cell, this value is used instead. 0.4
Subsidencewizard icon top layer thickness.png DEFAULT_TOP_LAYER_THICKNESS m If no top layer value can be found in a particular grid cell, this value is used instead. 5.0
HI PASSIVE DRAINAGE m When a drainage is active, the highest ground water level (ghg) is lowered by x meters. -0.10
LOW PASSIVE DRAINAGE m When a drainage is active, the lowest ground water level (glg) is lowered by x meters . 0.0
Subsidencewizard icon years.png YEARS year The amount of years to simulate during the calculation, in 1-year steps. 30
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
Model attributes
Climate start temp • Climate final temp • Climate start year • Climate final year • Climate oxidation • Climate soil temp factor • Default clay thickness • Default peat fraction • Default top layer thickness • Active drainage factor • Hi passive drainage • Low passive drainage • Passive drainage factor • A • B • C • Years • Years per timeframe • Start year • Inundate land below water level
Related
Features • Rasters • Result type •  Subsidence Model
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