From csdms
[edit] Area-Slope Equation Calculator
Contents |
[edit] Metadata
| Modeler information | |
|---|---|
| First name | Sagy |
| Last name | Cohen |
| Type of contact | Model developer |
| Institute / Organization | The University of Newcastle |
| Postal address 1 | |
| Postal address 2 | |
| Town / City | Callaghan |
| Postal code | 2308 |
| State | NO STATE |
| Country | Australia |
| Email address | sagy.cohen@newcastle.edu.au |
| Phone | |
| Fax | |
| Additional modeler information | |
|---|---|
| First name | Garry |
| Last name | Willgoose |
| Type of contact | Model developer |
| Institute / Organization | |
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| Postal address 2 | |
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| Email address | |
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| Additional modeler information | |
|---|---|
| First name | Greg |
| Last name | Hancock |
| Type of contact | Model developer |
| Institute / Organization | |
| Postal address 1 | |
| Postal address 2 | |
| Town / City | |
| Postal code | |
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| Email address | |
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| Model identity | |
|---|---|
| Model type | Modular |
| Spatial dimensions | 2D |
| Spatial extent | |
| Model domain | |
| One-line model description | Pixel scale Area-Slope equation calculator |
| Extended model description | Traditionally the Area-Slope equation (S=cA^alpha) is extracted from a catchment area vs. slope plot. This model calculate the Area-Slope constant and coefficient (alpha) for each pixel at the catchment as a function of its downslope neighbor. |
| Model technical information | |
|---|---|
| Supported platforms | Windows |
| Other platform | |
| Programming language | Matlab |
| Other program language | |
| Code optimized | |
| Start year development | 2006 |
| Does model development still take place? | No |
| If above answer is no, provide end year model development | |
| Model availability | As executable |
| Source code availability (Or provide future intension) | |
| Source web address | |
| Program license type | Other |
| Program license type other | -- |
| OpenMI compliant | No but possible |
| CCA component | No but possible |
| IRF interface | No but possible |
| Memory requirements | -- |
| Typical run time | Minutes |
| Input - Output description | |
|---|---|
| Describe input parameters | Three input maps at ESRI ASCII format:
|
| Input format | ASCII |
| Other input format | |
| Describe output parameters | Two output maps ESRI ASCII format:
|
| Output format | ASCII |
| Other output format | |
| Pre-processing software needed? | No |
| Describe pre-processing software | |
| Post-processing software needed? | Yes |
| Describe post-processing software | ArcGIS or other to convert ASCII output to map. |
| Visualization software needed? | Yes |
| If above answer is yes | ESRI, Matlab |
| Other visualization software | |
| Process description model | |
|---|---|
| Describe processes represented by the model | Extract c and alpha from:
Slope=cArea^alpha For more details: Cohen, S., G. Willgoose, and G. Hancock (2008), A methodology for calculating the spatial distribution of the area-slope equation and the hypsometric integral within a catchment, J. Geophys. Res., 113, F03027, doi:10.1029/2007JF000820. |
| Describe key physical parameters and equations | -- |
| Describe length scale and resolution constraints | Computer memory. |
| Describe time scale and resolution constraints | -- |
| Describe any numerical limitations and issues | Artificially limit the alpha values between 2 and -2 and the constant values between 0 and 2.
Done so to avoid extreme outliers. |
| Model testing | |
|---|---|
| Describe available calibration data sets | Cohen, S., G. Willgoose, and G. Hancock (2008), A methodology for calculating the spatial distribution of the area-slope equation and the hypsometric integral within a catchment, J. Geophys. Res., 113, F03027, doi:10.1029/2007JF000820. |
| Upload calibration data sets if available: | |
| Describe available test data sets | Demo data included. 107x127 pixels catchment. |
| Upload test data sets if available: | |
| Describe ideal data for testing | Reasonable relief catchment. |
| Users groups model | |
|---|---|
| Do you have current or future plans for collaborating with other researchers? | -- |
| Documentation model | |
|---|---|
| Provide key papers on model if any | Cohen, S., G. Willgoose, and G. Hancock (2008), A methodology for calculating the spatial distribution of the area-slope equation and the hypsometric integral within a catchment, J. Geophys. Res., 113, F03027, doi:10.1029/2007JF000820. |
| Is there a manual available? | No |
| Upload manual if available: | |
| Model website if any | |
| Model forum / discussion board | |
| Additional comments | |
|---|---|
| Comments | |
