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Single Processor +
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02:23:01, 27 July 2021 +
No +
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. +
AR2 model parameters, as defined in wrapper script +
The geometry of a channel centerline is re … The geometry of a channel centerline is represented as a direction series using a second-order autoregressive formulation. The governing equation is</br></br>theta(i) = b_1*theta(i-1) + b_2*theta(i-2) + epsilon(i)</br></br>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.a normal distribution with a mean of zero. +
The channel is represented by a set of linked nodes. There are no intrinsic constrains for length scale or resolution. +
Some parameter values result in channels that self-intersect. The code outputs both the raw centerline and a simplified centerline with self-intersections removed. +
Channel centerlines and associated model parameters +
Channel planform geometry +
Not applicable - the model generates static channel planforms. +
Only maintenance +
2,021 +
This code creates the channel centerline ( … 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.using different random disturbance series. +
Ajay +
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0.2 +
Variable, but minimal for processing any one centerline +
Disturbed periodic model for river meanders +
generates +, model +, earth surface processes +, second-order autoregressive model +, single thread-channel +, line equidistant +, second-order autoregressive +, earth surface +, surface processes +, disturbed periodic model +, code creates +, autoregressive model +, proposed by ferguson +, disturbed periodic +, banks +, thread-channel + and ar2-sinuosity +
As code +
Single +
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02:29:52, 27 July 2021 +
1 +
Generates planforms for single-thread channel using a second-order autoregressive model +
MATLAB .mat file +
291 McCormick Rd. +
22904 +
false +
false +
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GPL v2 +
Matlab +
Minutes +
Through web repository +
https://github.com/alimaye/AR2-sinuosity +
Matlab +
