Model:DrEICH algorithm: Difference between revisions
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{{Model identity2 | {{Model identity2 | ||
| | |ModelDomain=Terrestrial, Hydrology | ||
|Spatial dimensions=2D | |Spatial dimensions=2D | ||
|Spatialscale=Landscape-Scale | |Spatialscale=Landscape-Scale | ||
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|Town / City=Edinburgh | |Town / City=Edinburgh | ||
|Postal code=EH8 9XP | |Postal code=EH8 9XP | ||
|Country=United Kingdom | |Country=United Kingdom | ||
|Email address=f.clubb@ed.ac.uk | |Email address=f.clubb@ed.ac.uk | ||
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|Additional town / City=Edinburgh | |Additional town / City=Edinburgh | ||
|Additional postal code=EH8 9XP | |Additional postal code=EH8 9XP | ||
|Additional country=United Kingdom | |Additional country=United Kingdom | ||
|Additional email address=simon.m.mudd@ed.ac.uk | |Additional email address=simon.m.mudd@ed.ac.uk | ||
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|Additional town / City=Edinburgh | |Additional town / City=Edinburgh | ||
|Additional postal code=EH8 9XP | |Additional postal code=EH8 9XP | ||
|Additional country=United Kingdom | |Additional country=United Kingdom | ||
|Additional email address=D.T.Milodowski@ed.ac.uk | |Additional email address=D.T.Milodowski@ed.ac.uk | ||
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|Start year development=2012 | |Start year development=2012 | ||
|Does model development still take place?=Yes | |Does model development still take place?=Yes | ||
|DevelopmentCode=As is, no updates are provided | |||
|DevelopmentCodeYearChecked=2020 | |||
|Model availability=As code | |Model availability=As code | ||
|Source code availability=Through CSDMS repository | |Source code availability=Through CSDMS repository | ||
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|Other output format=float | |Other output format=float | ||
|Pre-processing software needed?=Yes | |Pre-processing software needed?=Yes | ||
|Describe pre-processing software=A chi analysis of the landscape must first be performed to get the correct m/n value for the landscape. This can be done using the chi analysis toolkit available on CSDMS ( | |Describe pre-processing software=A chi analysis of the landscape must first be performed to get the correct m/n value for the landscape. This can be done using the chi analysis toolkit available on CSDMS (https://csdms.colorado.edu/wiki/Model:Chi_analysis_tools). | ||
|Post-processing software needed?=No | |Post-processing software needed?=No | ||
|Visualization software needed?=No | |Visualization software needed?=No | ||
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|Describe key physical parameters and equations=There are two user-defined parameters which need to be defined in the model. | |Describe key physical parameters and equations=There are two user-defined parameters which need to be defined in the model. | ||
1) The m/n value. This parameter is in the steady state stream power equation for channel slope: | 1) The m/n value. This parameter is in the steady state stream power equation for channel slope: | ||
dz/dx = (U/K)^1/n * A(x)^(-m/n), where U is rock uplift rate, K is an erodibility coefficient, A is drainage area, and m and n are constants. The best fit m/n value for each landscape must be determined using the chi analysis toolkit ( | dz/dx = (U/K)^1/n * A(x)^(-m/n), where U is rock uplift rate, K is an erodibility coefficient, A is drainage area, and m and n are constants. The best fit m/n value for each landscape must be determined using the chi analysis toolkit (https://csdms.colorado.edu/wiki/Model:Chi_analysis_tools) before the DrEICH algorithm can be run. The routines in the chi analysis toolkit provide a statistical method of identifying the m/n value for the landscape. | ||
2) The number of linked pixels with a contour curvature > 0.1 m^-1. The first stage in the DrEICH algorithm is identifying valleys with positive curvature in which to run the model. A valley is selected to contain a channel head if there are more than a defined number of pixels in that valley with a contour curvature greater than 0.1. This parameter does not affect the location of the channel head within each valley, but does affect how many valleys will be selected. A default value of 10 is suggested, but this may need to vary depending on the relief of the landscape (a lower value of 5 may be more appropriate for lower-relief landscapes). | 2) The number of linked pixels with a contour curvature > 0.1 m^-1. The first stage in the DrEICH algorithm is identifying valleys with positive curvature in which to run the model. A valley is selected to contain a channel head if there are more than a defined number of pixels in that valley with a contour curvature greater than 0.1. This parameter does not affect the location of the channel head within each valley, but does affect how many valleys will be selected. A default value of 10 is suggested, but this may need to vary depending on the relief of the landscape (a lower value of 5 may be more appropriate for lower-relief landscapes). | ||
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|Model website if any=http://www.geos.ed.ac.uk/~smudd/LSDTT_docs/html/channel_heads.html | |Model website if any=http://www.geos.ed.ac.uk/~smudd/LSDTT_docs/html/channel_heads.html | ||
}} | }} | ||
{{Additional comments model}} | {{Additional comments model | ||
|Comments=Active development and maintenance of the code has moved to GitHub and been incorporated within broader LSDTopoTools software package: https://github.com/LSDtopotools/LSDTopoTools2 | |||
}} | |||
{{CSDMS staff part | {{CSDMS staff part | ||
|OpenMI compliant=No | |OpenMI compliant=No but possible | ||
|IRF interface=No | |IRF interface=No but possible | ||
|CMT component= | |CMT component=No but possible | ||
|CCA component=No | |CCA component=No but possible | ||
}} | }} | ||
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== References == | == References == | ||
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== Issues == | == Issues == |
Latest revision as of 20:15, 16 September 2020
DrEICH algorithm
Metadata
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Introduction
History
References
Nr. of publications: | 3 |
Total citations: | 136 |
h-index: | 3 |
m-quotient: | 0.3 |
Featured publication(s) | Year | Model described | Type of Reference | Citations |
---|---|---|---|---|
Clubb, Fiona J.; Mudd, Simon M.; Milodowski, David T.; Hurst, Martin D.; Slater, Louise J.; 2014. Objective extraction of channel heads from high-resolution topographic data. Water Resources Research, 50, 4283–4304. 10.1002/2013WR015167 (View/edit entry) | 2014 | DrEICH algorithm |
Model overview | 121 |
See more publications of DrEICH algorithm |