Also known as
Model type Single
Model part of larger framework
Note on status model Development of the model is discontinued and is now merged and fully integrated with CoastMorpho2D (
Date note status model 2024-01-24
Incorporated models or components:
Spatial dimensions 2D
Spatial extent Regional-Scale, Landscape-Scale, Watershed-Scale
Model domain Coastal
One-line model description 2D long-term marsh evolution model based on tidal dispersion
Extended model description Simulate marsh evolution at 10-10000 time scale. Suitable for domains 0.1km2 to 1000 km2.

Only simulates tidal flow. Conserve sediment within the domain. Allows to track sediment through the open boundaries. Version 2.0 also included wind waves, ponding, edge erosion Version under construction includes swell waves, cross-shore and along-shore wave-induced transport, secondary flow in channel bends, stratigraphy (sand and mud as separate constituents)

Name Giulio Mariotti
Type of contact Project manager
Institute / Organization Louisiana State University
Postal address 1
Postal address 2
Town / City Baton Rouge
Postal code 70803
State Louisiana
Country United States
Email address

Supported platforms
Other platform
Programming language


Other program language
Code optimized Single Processor
Multiple processors implemented
Nr of distributed processors
Nr of shared processors
Start year development 2017
Does model development still take place? Yes
If above answer is no, provide end year model development
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 CSDMS repository
Source web address
Source csdms web address
Program license type BSD or MIT X11
Program license type other
Memory requirements
Typical run time less than an hour

Describe input parameters Initial elevation (z)

grid with cell type (A)

Input format
Other input format Matlab matrix format
Describe output parameters elevation through time

many other parameters can be saved during the simulations (e.g., velocity, suspended sediment concentration)

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 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

Describe key physical parameters and equations Creep coefficient for mud

Creep coefficient for marsh peat Tidal dispersion coefficient Erosion coefficient Critical shear stress for vegetated areas Critical shear stress for unvegetated areas Increase in τcr with depth below MLW Settling velocity in unvegetated areas Settling velocity in vegetated areas Tidal range Tidal period External sediment supply Rate of relative sea level rise Manning coefficient for unvegetated mud Manning coefficient for vegetated areas Maximum organic accretion rate Sediment dry bulk density Morphological time step Spatial resolution

v2.0 also includes:

Time series of wind speed and direction Edge erodibility Fraction of eroded edge material that is oxidized (i.e., removed from the mass balance) Rate of pond deepening Rate of pond expansion Elevation thresholds for pond formation

Describe length scale and resolution constraints Suitable for a large range of spatial resolution (0.5 m to 100 m)
Describe time scale and resolution constraints Generally runs with very large time steps (1 year)

Cannot resolve intra-tidal processes (i.e., ebb-flood variability)

Describe any numerical limitations and issues Implicit code. Very stable. Very efficient

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 Examples are included in the submission

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 No but possible
WMT component No but possible
PyMT component
Is this a data component
DOI model 10.5281/zenodo.1218091
For model version V1.0
Year version submitted 2018
Link to file
DOI model 10.5281/zenodo.3768862
For model version V2.0
Year version submitted 2020
Link to file
DOI model 10.5281/zenodo.8139719
For model version v3.0
Year version submitted 2023
Link to file
Can be coupled with:
Model info

Nr. of publications: 1
Total citations: 0
h-index: --"--" is not a number.
m-quotient: 0

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Nr. of publications: 1
Total citations: 0
h-index: --"--" is not a number.
m-quotient: 0

Featured publication(s)YearModel describedType of ReferenceCitations
Mariotti, Giulio 2018. MarshMorpho2D, version 1.0.. , , 10.5281/zenodo.1218091
(View/edit entry)
2018 MarshMorpho2D

Source code ref.

Mariotti, Giulio; Murshid, Shamim; 2018. A 2D Tide-Averaged Model for the Long-Term Evolution of an Idealized Tidal Basin-Inlet-Delta System. Journal of Marine Science and Engineering, 6, 154. 10.3390/jmse6040154
(View/edit entry)
2018 CoastMorpho2D

Related theory

See more publications of MarshMorpho2D



Input Files

Output Files