Also known as Landlab Depth Dependent Linear Diffuser
Model type Tool
Model part of larger framework LandLab
Note on status model
Date note status model
Incorporated models or components:
Spatial dimensions 2D
Spatial extent Landscape-Scale
Model domain Terrestrial
One-line model description Soil depth-dependent linear hillslope diffuser
Extended model description This component implements a depth and slope dependent linear diffusion rule in the style of Johnstone and Hilley (2014). Soil moves with a prescribed exponential vertical velocity profile. Soil flux is dictated by a diffusivity, K, and increases linearly with topographic slope.

soil, hillslope,

Name Rachel Glade
Type of contact
Institute / Organization
Postal address 1
Postal address 2
Town / City Los Alamos
Postal code 87544
Country United States
Email address

Supported platforms
Other platform
Programming language


Other program language
Code optimized
Multiple processors implemented
Nr of distributed processors
Nr of shared processors
Start year development 2017
Does model development still take place? No
If above answer is no, provide end year model development 2019
Code development status Active
When did you indicate the 'code development status'? 2020
Model availability As code
Source code availability
(Or provide future intension)
Through web repository
Source web address
Source csdms web address
Program license type BSD or MIT X11
Program license type other
Memory requirements
Typical run time

Describe input parameters grid: ModelGrid
       Landlab ModelGrid object
   linear_diffusivity: float
       Hillslope diffusivity, m**2/yr
   soil_transport_decay_depth: float
       characteristic transport soil depth, m
Input format
Other input format
Describe output parameters
Output format
Other output format
Pre-processing software needed? No
Describe pre-processing software
Post-processing software needed? No
Describe post-processing software
Visualization software needed? No
If above answer is yes
Other visualization software

Describe processes represented by the model This component calculates the flux of soil on a hillslope according to a soil depth-dependent linear diffusion rule.
Describe key physical parameters and equations Soil flux is calculated at the product of diffusivity, a characteristic transport depth, and an exponential velocity profile based on total soil depth.
Describe length scale and resolution constraints
Describe time scale and resolution constraints
Describe any numerical limitations and issues Explicit solver can go unstable, and it is not always obvious. Make sure to check resulting soil depths in the landscape to look for instabilities.

Describe available calibration data sets
Upload calibration data sets if available:
Describe available test data sets
Upload test data sets if available:
Describe ideal data for testing

Do you have current or future plans for collaborating with other researchers?
Is there a manual available? No
Upload manual if available:
Model website if any
Model forum / discussion board

This part will be filled out by CSDMS staff

OpenMI compliant No but possible
BMI compliant Yes
WMT component No but possible
PyMT component Yes
Is this a data component
Can be coupled with:
Model info
Nr. of publications: --
Total citations: 0
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m-quotient: 0
Qrcode DepthDependentDiffuser.png
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Nr. of publications: --
Total citations: 0
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Input Files

Output Files