Model:MAST-1D sand and mud

MAST-1D sand and mud

Also known as	MAST 1D Minnesota
Model type	Single
Model part of larger framework
Note on status model	there is a mix grain size model by Wes Lauer and Katherine De Rego https://github.com/MAST-1D/MAST-1D-2.0 and an equilibrium (analytical) solution by Viparelli and Eke https://github.com/vipenrica/Channel-geometry
Date note status model	2025-12-12

Incorporated models or components:

Spatial dimensions	1D
Spatial extent	Reach-Scale
Model domain	Terrestrial
One-line model description	The model simulates the co-evolution of a single thread sand bed river and its floodplain in 1D
Extended model description	Given the hydrologic regime (flow duration curve) and the sediment supply rate (annual sand load and rating curve for mud), the model imposes sediment mass conservation to simulate changes in channel and floodplain elevation, channel bankfull width, depth and discharge, as well as point bar height and grain size distribution, overbank deposition rates, centerline or bank migration rates.

Keywords:	floodplain morphodynamics, channel morphodyanmics, sand and mud,

Name	Enrica Viparelli
Type of contact	Model developer
Institute / Organization
Postal address 1
Postal address 2
Town / City	Columbia SC, Napoli, Italy
Postal code	29208/80126
State	South Carolina
Country	United States
Email address	viparell@cec.sc.edu and eviparelli@unina.itURIs of the form "viparell@cec.sc.edu and eviparelli@unina.it" are not allowed.
Phone
Fax

Supported platforms	Windows
Other platform
Programming language	C++
Other program language	Visual Basic for Applications
Code optimized	Single Processor
Multiple processors implemented
Nr of distributed processors
Nr of shared processors
Start year development	2008
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'?	2025
Model availability	As code
Source code availability (Or provide future intension)	Through web repository
Source web address	https://github.com/vipenrica/MAST-1D---Sand-Mud---Minnesota-River
Source csdms web address
Program license type	BSD or MIT X11
Program license type other
Memory requirements
Typical run time

Describe input parameters	flow duration curve, mean annual sand load, rating curve for mud, long profile and other geometric parameters
Input format
Other input format	excel spreadsheet
Describe output parameters	long profile, bankfull channel geometry, sediment fluxes, bankfull discharge, fraction of sand and mud stored in the floodplain and in the point bar
Output format
Other output format	excel file
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	the module describes how channel bed profile, channel width and depth, as well as bankfull discharge, can change due to the imbalance between the hydrologic regime (flow duration curve), the supply of sand and mud, sand transport capacity and exchange of sand and mud between the channel and the floodplain for point bar deposition, bank migration and overbank deposition.
Describe key physical parameters and equations	Model governing equations express the conservation of sand and mud in the floodplain, in the channel bed and in the water column. The active layer approximation is implemented. Sand transport rates are computed with an Engelund and Hansen-type load relation, overbank deposition rates are computed with empirical closures. Channel migration and point bar height can be fixed or can vary in space and time following the work by Ikeda et al. (1981) or Eke et al., (2014).
Describe length scale and resolution constraints	the module operates at the reach scale (10 - 100s of kilometers)
Describe time scale and resolution constraints	the module works at time scales of a decade or longer.
Describe any numerical limitations and issues	reach-averaged channel sinuosity is assumed to be fixed, sand is modeled in terms of a single grain size and floodplain topography (floodplain channels) is not considered.

Describe available calibration data sets	The model has been applied to simulate the Minnesota River widening and the manuscript is currently in review with the Journal of Geophysical Research: Earth Surface
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?	We are working on the model to relax the assumptions of fixed width, absence of floodplain topography and single grain size. Future plans also involve integrating the sand and mud and the gravel version in a single module.

Is there a manual available?	No
Upload manual if available:
Model website if any	https://github.com/vipenrica/MAST-1D---Sand-Mud---Minnesota-River
Model forum / discussion board	also https://github.com/vipenrica/Channel-geometry and https://github.com/MAST-1D/MAST-1D-2.0

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