Model:Meanderpy

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Meanderpy

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Summary Contact Technical specs In/Output Process Testing Other Component info 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 3D Spatial extent Landscape-Scale, Reach-Scale Model domain Terrestrial One-line model description A simple kinematic model of meandering Extended model description "meanderpy" is a Python module that implements a simple numerical model of meandering, the one described by Howard & Knutson in their 1984 paper "Sufficient Conditions for River Meandering: A Simulation Approach" (https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/WR020i011p01659). This is a kinematic model that is based on computing migration rate as the weighted sum of upstream curvatures; flow velocity does not enter the equation. Curvature is transformed into a 'nominal migration rate' through multiplication with a migration rate (or erodibility) constant; in the Howard & Knutson (1984) paper this is a nonlinear relationship based on field observations that suggested a complex link between curvature and migration rate. In the 'meanderpy' module we use a simple linear relationship between the nominal migration rate and curvature, as recent work using time-lapse satellite imagery suggests that high curvatures result in high migration rates (Sylvester et al., 2019). Keywords: fluvial morphodynamics, meandering, Name Zoltan Sylvester Type of contact Model developer Institute / Organization The University of Texas at Austin Postal address 1 Postal address 2 Town / City Austin Postal code 78713-8924 State Texas Country United States Email address zoltan.sylvester@beg.utexas.edu Phone Fax Supported platforms Unix, Linux, Mac OS 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 2018 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 web repository Source web address https://github.com/zsylvester/meanderpy Source csdms web address Program license type Apache public license Program license type other Memory requirements -- Typical run time minutes Describe input parameters channel width (m), channel depth (m), padding (number of nodepoints along centerline), sampling distance along centerline, number of iterations, dimensionless Chezy friction factor, threshold distance at which cutoffs occur, migration rate constant (m/s), vertical slope-dependent erosion rate constant (m/s), time step (s), density of water (kg/m3), which time steps will be saved, approximate number of bends you want to model, initial slope (setting this to non-zero results in instabilities in long runs) Input format ASCII Other input format Describe output parameters channel centerlines; 3d model Output format Binary 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 Simple linear relationship between the nominal migration rate and curvature Describe key physical parameters and equations -- Describe length scale and resolution constraints -- Describe time scale and resolution constraints -- Describe any numerical limitations and issues -- 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 Comments 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 No but possible Is this a data component Can be coupled with:

Model info Authors Zoltan Sylvester Source code Go to external source code site Model citations Nr. of publications: 1 Total citations: 67 h-index: 1 m-quotient: 0.2 QR-code Link to this page Other models by author Meanderpy

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Nr. of publications:	1
Total citations:	67
h-index:	1
m-quotient:	0.2

Featured publication(s)	Year	Model described	Type of Reference	Citations
Sylvester, Zoltán; Durkin, Paul; Covault, Jacob A.; 2019. High curvatures drive river meandering. Geology, 47, 263–266. 10.1130/G45608.1 (View/edit entry)	2019	Meanderpy	Model overview	67
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