Property:Describe processes
From CSDMS
This is a property of type Text.
L
* Interception
* Evaporation of interceted water
* Snow melt
* Frost index
* Water available for infiltration and direct runoff
* Water uptake by roots & transpiration
* Evaporation from the soil surface
* Preferential bypass flow
* Infiltration capacity
* Actual infiltration and surface runoff
* Soil moisture redistribution
* Groundwater
* Surface runoff routing
* Sub-surface runoff routing
* Channel routing
* Irrigation
* Water use
+
S
*Fluvial/alluvial processes;
**Aggrading fluvial channels in one gridcell with crevasse. Subgrid sedimentation mimics alluvial ridge aggradation and overbank deposition. Avulsions are modelled one dimensionally by calculating the flow and sediment transport at prospective avulsion nodes. See also Dalman & Weltje (2008).
*Floodplain processes;
**Differential compaction, groundwater table, peat growth and overbank deposition
*Hypopycnal plume and marine currents:
**Rivers deliver sediment and water to the sea, where the river momentum spreads the suspended sediment in a plume. Multiple plumes and longshore current hydrodynamics are calculated using a potential flow routine. Subsequent sedimentation due to fallout uses the removal rate principle after Syvitski et al (1988).
*Wave resuspension and crosshore transport;
**Waves are modelled using linear Airy and Stokes wave theory. Deepwater wave height is derived from a Gaussian distribution to represent natural storm variability The asymmetric waves preferentially transport the sands (bedload fraction) shorewards and the fines (suspended load fraction) offshore. In combination with a littoral drift routine this allows waves to rework and transport sediments.
+
B
- Stochastically generated storm environment
- Dune growth and storm erosion
- Storm overwash
- Sea-level rise
- Shoreline change (ocean and back-barrier)
- Dynamic shoreface response to sea-level rise, overwash, and dune growth
- Interior shrub expansion and mortality +
A
B
C
E
F
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I
M
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S
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E
F
L
S
B
C
S
D
P
S
C
F
I
A
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-- +
B
D
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F
-- +
G
-- +
R
-- +
S
-- +
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W
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R
S
O
E
S
D
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L
U
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H
M
D
H
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L
-- +
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H
S
O
M
1. Bedrock and soil physical weathering;
2. Sediment transport by overland flow;
3. Soil Creep (diffusion);
4. Aeolian deposition. +
L
1D gradually varied channel flow, Total sediment transport of a river at a node, mass conservation, tectonic elevation changes, settling velocity +
S
H
2
C
2d multiple flow direction steady state flow model
Erosion and deposition over 9 separate grainsizes
Bedload and suspended load sediment transport
Slope processes (creep, enhanced creep and mass movement)
Vegetation growth
Aeolian transport (under development - slab dune model) +
A continuity equation, representing the conservation of sediment in the nearshore zone, relates gradients in alongshore sediment flux to horizontal shoreline changes, given a depth over which erosion or accretion are distributed—the depth of the shoreface. This treatment embodies the assumption that cross-shore sediment fluxes across base of the shoreface are small compared to gradients in alongshore flux. However, cross-shore sediment fluxes landward of the shoreline, associated with overwash, are treated, allowing barriers to migrate and maintain elevation relative to a rising sea level. See Ashton and Murray (2006a) for a full treatment of these model dynamics.
The material underlying the shoreline and shoreface converted to mobile sediment as it is exposed by shoreline erosion. The lithology is parameterized by two quantities that can vary across the model domain: the maximum weathering rate (which occurs when the shoreface is bare of sediment) and the composition of the resulting sediment (percentage coarse enough to stay in the nearshore system. See Valvo et al. (2006) for a full explanation of how underlying geology is treated.
Where beach nourishment is deemed by the user to be occurring, if the gradients in sediment flux would cause the shoreline to erode landward of a pre-determined location, sediment is added at the rate required to prevent such shoreline change. Hard structures are treated as if the lithology has a maximum weathering rate of 0. +
A
A set of biophysical modules that simulate biological and physical processes in farming systems.
A set of management modules that allow the user to specify the intended management rules that characterise the scenario being simulated and that control the simulation. +
O
Advection, Dispersion, Inflow, and Transient Storage. First-order loss/production, sorption. +
N
Advective transport and removal of nitrate and organic carbon via denitrification in lakes, wetlands, and channels. +
R
Aeolian sediment transport (snow or sand grains), granular motion, avalanches, snowfall, time-dependent cohesion +
W
C
A
Alpine3D is a model for high resolution simulation of alpine surface processes, in particular snow processes. The model can be driven by measurements from automatic weather stations or by meteorological model outputs. The core three-dimensional Alpine3D modules consist of a radiation balance model (which uses a view factor approach and includes shortwave scattering and longwave emission from terrain and tall vegetation) and a drifting snow model solving a diffusion equation for suspended snow and a saltation transport equation. The processes in the atmosphere are thus treated in three dimensions and coupled to a distributed one dimensional model of vegetation, snow and soil model (Snowpack) using the assumption that lateral exchange is small in these media. +
P
Any 3D ocean circulation, mixing, dispersion processes, etc +
T
Any density driven current including particle-laden flows produced by the lock-exchange (or continuous inflow) can be simulated. The flow can interact with any arbitrary topography on the bottom. +
G
