Model:AR2-sinuosity

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AR2-sinuosity


Metadata

Also known as Disturbed periodic model for river meanders
Model type Single
Model part of larger framework
Incorporated models or components:
Spatial dimensions 2D
Spatial extent Landscape-Scale, Watershed-Scale, Reach-Scale
Model domain Terrestrial, Hydrology, Planetary landforms
One-line model description Generates planforms for single-thread channel using a second-order autoregressive model
Extended model description This code creates the channel centerline (i.e., the line equidistant between two banks) for a single thread-channel, using a second-order autoregressive model. The code implements a model for random centerlines proposed by Ferguson, R. I. (1976) Disturbed periodic model for river meanders, Earth Surface Processes 1(4), 337-347, doi:10.1002/esp.3290010403. This implementation also includes (1) controls for the node spacing and extent of channels, (2) removal of self-intersecting (cutoff) loops from modeled centerlines, and (3) a wrapper script to sweep model parameter space and generate alternate realizations using different random disturbance series.
Keywords:


First name Ajay
Last name Limaye
Type of contact
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
Does model development still take place? No
If above answer is no, provide end year model development 2021
Code development status Only maintenance
When did you indicate the 'code development status'? 2021
Model availability As code
Source code availability
(Or provide future intension)
Through web repository
Source web address https://github.com/alimaye/AR2-sinuosity
Source csdms web address
Program license type GPL v2
Program license type other
Memory requirements Variable, but minimal for processing any one centerline
Typical run time Minutes


Describe input parameters AR2 model parameters, as defined in wrapper script
Input format
Other input format
Describe output parameters Channel centerlines and associated model parameters
Output format
Other output format MATLAB .mat file
Pre-processing software needed? No
Describe pre-processing software
Post-processing software needed? No
Describe post-processing software
Visualization software needed? Yes
If above answer is yes Matlab
Other visualization software


Describe processes represented by the model Channel planform geometry
Describe key physical parameters and equations The geometry of a channel centerline is represented as a direction series using a second-order autoregressive formulation. The governing equation is

theta(i) = b_1*theta(i-1) + b_2*theta(i-2) + epsilon(i)

where theta is the channel direction, i is the centerline node index, b_1 and b_2 are coefficients, and epsilon is a random disturbance drawn from a normal distribution with a mean of zero.

Describe length scale and resolution constraints The channel is represented by a set of linked nodes. There are no intrinsic constrains for length scale or resolution.
Describe time scale and resolution constraints Not applicable - the model generates static channel planforms.
Describe any numerical limitations and issues Some parameter values result in channels that self-intersect. The code outputs both the raw centerline and a simplified centerline with self-intersections removed.


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 of model output are available in the following data repository:

Limaye, A. B., 2021, Sinuosity data for numerically modeled and natural channels, University of Virginia Dataverse, https://doi.org/10.18130/V3/TRTTIS.


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 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 "Code IRF or not" 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
Ajay Limaye
Nr. of publications: --
Total citations: 0
h-index: --"--" is not a number.
m-quotient: 0
Qrcode AR2-sinuosity.png
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Nr. of publications: --
Total citations: 0
h-index: --"--" is not a number.
m-quotient: 0


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