Model:GullyErosionProfiler1D

GullyErosionProfiler1D

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	1D
Spatial extent	Reach-Scale
Model domain	Terrestrial, Hydrology
One-line model description	This model is designed to simulate longitudinal profiles with headward advancing headcuts.
Extended model description	This model is designed to simulate longitudinal profiles with headward advancing headcuts. This model simulates gully erosion on the centennial-scale given information such as average rainfall and infiltration rates. The modeler also specifies a headcut erosion rate and or a rule for headcut retreat (either discharge-dependent or height-dependent retreat).

Keywords:	Gully, elevation profile, Matlab, arid alluvial channel,

Name	Francis Rengers
Type of contact	Model developer
Institute / Organization	University of Colorado
Postal address 1	UCB 399
Postal address 2
Town / City	Boulder
Postal code	80309-0399
State	Colorado
Country	United States
Email address	francis.rengers@colorado.edu
Phone
Fax

Supported platforms	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	2012
Code development status	As is, no updates are provided
When did you indicate the 'code development status'?	2020
Model availability	As code
Source code availability (Or provide future intension)	Through CSDMS repository
Source web address
Source csdms web address	https://github.com/csdms-contrib/gullyerosionprofiler1d
Program license type	GPL v2
Program license type other
Memory requirements
Typical run time	Depends on the settings. Can be several hours.

Describe input parameters	The input file is a text file and users are required to input: Time (in model years) dT (the time step in fractions of a year) tauc (Critical Shear stress for portions of the channel that are vegetated in Pascals) taucWepp (Critical Shear stress for portions of the channel that are soil in Pascals) lenzone (the length of channel that is bare soil in Meters) Pmmphr (Rainfall to be used for erosion in Millimeters per Hour) tval (this is the number of loop iterations before a profile is saved as output) Immphr (Infiltration to be used for erosion in Millimeters per Hour) One additional input: One must supply the input length of the channel as a matlab data array called xcell.mat
Input format	ASCII
Other input format
Describe output parameters	The output are elevation values that represent the gully channel profile.
Output format	ASCII
Other output format
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	In order to plot the output data, it is probably easiest in Matlab

Describe processes represented by the model	This code will erode cells according to a shear stress and also deposit sediment based on the concentration of sediment in a modeled water column. Additionally it has a headcut that migrates upstream and as the headcut erodes it deposits sediment downstream that the model must erode.
Describe key physical parameters and equations	manning's n for vegetation manning's n for soil critical shear stress for vegetation critical shear stress for soil rainfall infiltration
Describe length scale and resolution constraints	This works for channels of hundreds of meters with 1 m cells
Describe time scale and resolution constraints	It is typically run for times no less than 25 years and no greater than 700 years.
Describe any numerical limitations and issues	Numerical instabilities occur if the time step is too large.

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

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Featured publication(s)	Year	Model described	Type of Reference	Citations
Rengers, Francis K.; Tucker, G. E.; 2014. Analysis and modeling of gully headcut dynamics, North American high plains. Journal of Geophysical Research: Earth Surface, 119, 983–1003. 10.1002/2013JF002962 (View/edit entry)	2014	GullyErosionProfiler1D	Model overview	46
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