Model:Sun fan-delta model

Sun fan-delta model

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	Marine, Terrestrial, Coastal, Planetary landforms
One-line model description	Fan-delta and alluvial fan landscape evolution model
Extended model description	Model for fluvial fan-delta evolution, originally described by Sun et al. (2002) and later adapted by Limaye et al. (2023). The model routes water and sediment across a grid from a single inlet and via a self-formed channel network, where local divergence in sediment flux drives bed elevation change. The model represents hydrodynamics using rules for flow routing and stress partitioning. At large scales, other heuristics determine how channels branch and avulse, distributing water and sediment. The original model, designed for fluvial fan-deltas that debouch into standing water, is extended to allow deposition of an alluvial fan in the absence of standing water. References: Limaye, A. B., Adler, J. B., Moodie, A. J., Whipple, K. X., & Howard, A. D. (2023). Effect of standing water on formation of fan-shaped sedimentary deposits at Hypanis Valles, Mars. Geophysical Research Letters, 50(4), e2022GL102367. https://doi.org/10.1029/2022GL102367 Sun, T., Paola, C., Parker, G., & Meakin, P. (2002). Fluvial fan deltas: Linking channel processes with large-scale morphodynamics. Water Resources Research, 38(8), 26-1-26–10. https://doi.org/10.1029/2001WR000284

Keywords:	sediment deposition, alluvial fan, fan-delta,

Name	Ajay Limaye
Type of contact	Model developer
Institute / Organization	Department of Environmental Sciences, University of Virginia
Postal address 1	291 McCormick Rd.
Postal address 2
Town / City	Charlottesville
Postal code	22904
State	Virginia
Country	United States
Email address	ajay@virginia.edu
Phone
Fax

Supported platforms	Linux, Mac OS, Windows
Other platform
Programming language	Matlab
Other program language
Code optimized	Single Processor
Multiple processors implemented
Nr of distributed processors
Nr of shared processors
Start year development	2021
Does model development still take place?	No
If above answer is no, provide end year model development	2022
Code development status	As is, no updates are provided
When did you indicate the 'code development status'?	2023
Model availability	As code
Source code availability (Or provide future intension)	Through web repository
Source web address	https://github.com/alimaye/sun-fan-delta-model
Source csdms web address
Program license type	GPL v3
Program license type other
Memory requirements
Typical run time	Hours to days

Describe input parameters	Several, as defined in wrapper script
Input format
Other input format
Describe output parameters	Grids of topography
Output format
Other output format	MATLAB .mat
Pre-processing software needed?	No
Describe pre-processing software
Post-processing software needed?	Yes
Describe post-processing software	The model outputs a series of .mat files that contain the full output of the state fields of the model (e.g., elevation, water discharge). These files are convertible to netCDF file with coordinates for use with DeltaMetrics (https://github.com/DeltaRCM/DeltaMetrics).
Visualization software needed?	Yes
If above answer is yes	Matlab
Other visualization software

Describe processes represented by the model	Sediment routing in alluvial channels, deposition, erosion, avulsion
Describe key physical parameters and equations	Key physical parameters include sediment grain size, sediment, density, water and sediment discharge, run time, the initial surface slope, the threshold sediment flux to propagate a new channel, and the allowed channel superelevation above the surrounding topography before avulsion. These parameters and the governing equations for the model are fully described in Limaye et al. (2023), Effect of standing water on formation of fan-shaped sedimentary deposits at Hypanis Valles, Mars, https://dx.doi.org/10.1029/2022GL102367
Describe length scale and resolution constraints	Alluvial channel morphology is not explicitly modeled; rather, channel width, depth, slope, and discharges of water and sediment are represented as sub-grid characteristics. Each cell contains at most one channel.
Describe time scale and resolution constraints	The model assumes continuous discharge; assuming flow intermittency of 0.01, the model can represent tens of thousands of years of surface evolution.
Describe any numerical limitations and issues

Describe available calibration data sets
Upload calibration data sets if available:
Describe available test data sets	Example outputs and associated wrapper scripts are available through the University of Virginia Dataverse at https://dx.doi.org/10.18130/V3/E0EGOC
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/alimaye/sun-fan-delta-model
Model forum / discussion board

Comments

This part will be filled out by CSDMS staff

OpenMI compliant	Not yet"Not yet" is not in the list (Yes, No but planned, No but possible, No not possible) of allowed values for the "Code openmi compliant or not" property.
BMI compliant	Not yet"Not yet" is not in the list (Yes, No but planned, No but possible, No not possible) of allowed values for the "BMICompliant" property.
WMT component	Not yet"Not yet" is not in the list (Yes, In progress, No but possible, No not possible) of allowed values for the "Code CMT compliant or not" property.
PyMT component	Not yet"Not yet" is not in the list (Yes, In progress, No but possible, No not possible) of allowed values for the "Code PyMT compliant or not" property.
Is this a data component	No

Can be coupled with:

Model info

Authors

Ajay Limaye

Moodie

Source code

Model citations

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Featured reference(s)	Open Access Status	Year	Type of Reference	Cited
Limaye, Ajay B.; Adler, Jacob B.; Moodie, Andrew J.; Whipple, Kelin X.; Howard, Alan D.; 2023. Effect of Standing Water on Formation of Fan‐Shaped Sedimentary Deposits at Hypanis Valles, Mars. Geophysical Research Letters, 50. 10.1029/2022GL102367	cc-by-nc · publishedVersion	2023	a module overview describing a module	3