Model attributes (Subsidence Overlay)

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

Attribute	Description	Default value	Remark
PARAMETER_A	The A parameter in the Oxidation formula.	0.023537	This value is recalculated each 1-year time step of the calculation.
PARAMETER_B	The B parameter in the Oxidation formula.	0.01263
PARAMETER_C	The C parameter in the Oxidation formula.	0.00668
CLIMATE_START_TEMP	The average temperature in the first year of the simulation.	10.1
CLIMATE_FINAL_TEMP	The average temperature in the final year of the subsidence simulation.	10.7
CLIMATE_OXIDATION	The oxidation factor used to recalculate the climate values between 1-year calculation steps.	0.67
CLIMATE_SOIL_TEMP_FACTOR	The soil temperature factor used to recalculate the climate values between 1-year calculation steps.	0.5
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	If no peat fraction value can be found in a particular grid cell, this value is used instead.	0.4
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	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	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	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.

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Subsidence Module

Subsidence Overlay

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Theory

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Model attributes

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