Model:PyDeltaRCM

PyDeltaRCM [edit]

Also known as
Model type	Single
Model part of larger framework
Note on status model
Date note status model

Incorporated models or components:

Spatial dimensions	2D
Spatial extent	Landscape-Scale
Model domain	Coastal, Hydrology
One-line model description	Reduced complexity river delta formation and evolution model with channel dynamics
Extended model description	pyDeltaRCM is the Python version of DeltaRCM (https://csdms.colorado.edu/wiki/Model:DeltaRCM) by Man Liang (also available from the CSDMS model repository). This version is a WMT component but can also be run as a stand-alone model (see README.md). DeltaRCM is a parcel-based cellular flux routing and sediment transport model for the formation of river deltas, which belongs to the broad category of rule-based exploratory models. It has the ability to resolve emergent channel behaviors including channel bifurcation, avulsion and migration. Sediment transport distinguishes two types of sediment: sand and mud, which have different transport and deposition/erosion rules. Stratigraphy is recorded as the sand fraction in layers. Best usage of DeltaRCM is the investigation of autogenic processes in response to external forcings.

Keywords:	delta evolution, cellular automata, coastal morphodynamics,

Name	Mariela Perignon
Type of contact	Model developer
Institute / Organization	University of Colorado / CSDMS
Postal address 1
Postal address 2
Town / City	Boulder
Postal code	80303
State	Colorado
Country	United States
Email address	perignon@colorado.edu
Phone
Fax

Supported platforms	Unix, Linux, Mac OS, Windows
Other platform
Programming language	Python
Other program language
Code optimized	Single Processor
Multiple processors implemented
Nr of distributed processors
Nr of shared processors
Start year development	2016
Does model development still take place?	Yes
If above answer is no, provide end year model development
Code development status
When did you indicate the 'code development status'?
Model availability	As code, As teaching tool
Source code availability (Or provide future intension)	Through web repository
Source web address	https://github.com/mperignon/pyDeltaRCM_WMT
Source csdms web address
Program license type	BSD or MIT X11
Program license type other
Memory requirements
Typical run time	Hours

Describe input parameters	Modify parameters in example input file deltaRCM.yaml included in repository. Run with example script run_pyDeltaRCM.py. Modify water/sediment discharge (as number of parcels), grid size and spacing, basin geometry, mud/sand ratio, etc
Input format
Other input format	YAML
Describe output parameters	Toggle on/off in input file: - PNG files of eta, stage, depth - grids of eta, stage, depth (as netCDF4) - grids of sand fraction in stratigraphy (as netCDF4)
Output format
Other output format	netCDF
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	Flux routing and sediment transport for the formation of river deltas. Resolves channel bifurcations, avulsion and migration. Can simulate subsidence (default basin-like shape, modify the Python code to customize). Can store stratigraphy (as sand fraction and thickness).
Describe key physical parameters and equations	[[Describe key physical parameters::See publications associated with DeltaRCM (in CSDMS model repository)]]
Describe length scale and resolution constraints	Domain should be 10s of Kms in x and y. Cell spacing should be 10s of meters.
Describe time scale and resolution constraints	Sediment and water discharge come from some physical parameters and the number of parcels chosen for each timestep. Set the number of parcels for both water and sediment to 1000s for improved resolution and speed.
Describe any numerical limitations and issues	Model should never be numerically unstable but its behavior depends on ratios of various parameters. If the model seems to not be "doing anything", look at the parameter initialization functions in deltaRCM_tools.py

Describe available calibration data sets	An intercomparison of the Matlab and Python versions of DeltaRCM is in the works.
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	https://github.com/mperignon/pyDeltaRCM_WMT
Model forum / discussion board	Installation and execution instructions can be found in the README.md file of the GitHub repository.

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