Property:Describe processes
From CSDMS
This is a property of type Text.
G
This code will erode cells according to a shear stress and also deposit sediment based on the concentration of sediment in a modeled water column. Additionally it has a headcut that migrates upstream and as the headcut erodes it deposits sediment downstream that the model must erode. +
D
This component calculates the flux of soil on a hillslope according to a soil depth-dependent linear diffusion rule. +
This driver program solves the equations describing horizontal velocities in a buoyant, turbulent, plane jet issuing in a normal direction from a coast into a large volume of still fluid. Sedimentation under the jet is modelled using a hemipelagic rain formulation, bedload dumping, and downslope diffusion due to slides, slumps and turbidity currents. +
K
This model is designed to represent infiltration (Green-Ampt), rainfall interception, and runoff (kinematic wave). Hydraulic roughness is accounted for using a depth-dependent Manning-type flow resistance equation.
For details on the model equations and numerical solution, see the following references:
Rengers, F.K., McGuire, L.A., Kean, J.W., Staley, D.M. and Hobley, D.E.J., 2016.
Model simulations of flood and debris flow timing in steep catchments after wildfire.
Water Resources Research, 52(8), pp.6041-6061.
McGuire, L.A. and Youberg, A.M., 2019. Impacts of successive wildfire on soil hydraulic properties:
Implications for debris flow hazards and system resilience. Earth Surface Processes and Landforms,
44(11), pp.2236-2250. +
P
This model simulates how flowing river water thaws interstitial pore ice in permafrost soils exposed on banks. This process - ablation - frees fine sediment that is otherwise cemented by ice, allowing for its entrainment and downstream transport. The model also simulates the episodic collapse of upper bank overhanging blocks that are undercut by ablation. This model is applicable to banks of permafrost rivers, but can be adapted to other settings. +
I
This tool estimates the volume of material eroded and deposited at user-defined increments along a debris flow channel. This model performs best in the analysis of channelized, highly erosive flows, and does not capture processes such as minor riling or sheetwash laden with sediment well, as these processes are typically below the limits of change detection used in the application. +
G
This tool is used to identify knickpoints using a drainage area threshold and a curvature threshold value +
S
This tool maps out local surface roughness based on the neighborhood distribution of surface normal vectors. As sediment transport processes in soil mantled landscapes tend to be diffusive, the emergence of bedrock drives an increase in surface roughness that is mapped out by this algorithm. +
D
This tool works under the assumption that the channels incise approximately based on the stream power law. It identifies the channel head as the upstream limit of fluvial incision based on the chi profile of the channel. +
P
Thus the model yields not only compressional wave speeds, but also shear wave speeds and compressional and shear wave attenuation coefficients. +
C
Tidal currents
Sea waves
Swell waves
Storm surges
Tidal dispersion transport
Along-wave transport
Downslope transport by currents, swell waves, breaking waves, and sea waves
Edge erosion
Marsh processes
Along-shore transport by radiation stresses +
M
Tide-averaged flow (by tidal dispersion)
Flow erosion (assuming quasi-static propagation)
Sediment deposition
Sediment transport
Soil diffusion (aka creep)
Organic sediment production
Vegetation effect on drag, settling velocity, soil creep
Sea level rise
v.20 also includes:
Wind waves (empirical function of speed, water depth, and fetch)
Edge erosion
Identification of impounded areas
Active pond deepening
Active pond expansion +
C
Time- and length-averaged sediment transport in shelf, shoreface and surf zone environments combined with morphodynamic-driven sediment flux through inlet, along ebb tide delta and with the bay or estuar. +
Q
Time-averaged sediment transport by long-range river transport based on discharge and gradient and on short range diffusive transport based on gradient and diffusion coefficients. Thresholds for slope and discharge can be set and act as a means to keep the flow from spreading over every adjacent grid cell allowing avulsion and bifurcation processes to be modeled. +
A
W
To simulate real weather and to do simulations with coarse resolutions, a minimum set of physics components is required, namely radiation, boundary layer and land-surface parameterization, convective parameterization, subgrid eddy diffusion, and microphysics. Since the model is developed for both research and operational groups, sophisticated physics schemes and simple physics schemes are needed in the model. The objectives of the WRF physics development are to implement a basic set of physics into the WRF model and to design a user friendly physics interface. Since the WRF model is targeted at resolutions of 1-10 km, some of physics schemes might not work properly in this high resolution (e.g. cumulus parameterization). However, at this early stage of model development, only existing physics schemes are implemented, and most of them are taken from current mesoscale and cloud models. In the future, new physics schemes designed for resolutions of 1-10 km should be developed and implemented. See http://www.mmm.ucar.edu/wrf/users/docs/wrf-phy.html#physics_scheme for more information +
S
D
Tool is used to regionalize a study area into zones with 'common physical characteristics' with the underlying aim of differentiating areas of influence of various physical processes. Regionalization attempts to aggregate spatial units or observations into clusters based on spatial continuity as well as attribute similarity.
Geometry metrics are derived from satellite data analysis and include a.o. island area, island aspect ratio, island fractal dimension, and surrounding channel metric, channel width, channel sinousity, number of outflow channels, convexity. +
C
Tracking of cosmogenic nuclides on surface and in fluvial system of a landslide dominated drainage basin +
G
