Summary
| Also known as
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| Model type
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Single
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| Model part of larger framework
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| Note on status model
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| Date note status model
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Technical specs
| Supported platforms
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Unix, Linux, Mac OS, Windows
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| Other platform
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| Programming language
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Matlab
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| Other program language
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| Code optimized
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Single Processor
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| Multiple processors implemented
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| Nr of distributed processors
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| Nr of shared processors
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| Start year development
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2006
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| Does model development still take place?
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No
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| If above answer is no, provide end year model development
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2009
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| Code development status
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| When did you indicate the 'code development status'?
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| Model availability
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As code
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Source code availability
(Or provide future intension)
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Through CSDMS repository
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| Source web address
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| Source csdms web address
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| Program license type
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Other
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| Program license type other
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| Memory requirements
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low, depending on dataset
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| Typical run time
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short, depending on the dataset
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In/Output
| Describe input parameters
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Two input files, all in ESRI ASCII format:
- DEM
- Flow direction grid (D8)
To change the input files, edit lines 19 for DEM and line 20 for Flow-direction in the source code.
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| Input format
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ASCII
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| Other input format
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| Describe output parameters
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Produce 5 output files (ESRI ASCII format):
- HI.txt - pixel scale hypsometric integral;
- max_elev.txt - the maximum elevation of the catchment flowing thorough each pixel;
- Elev_Acc.txt - the sum of the elevation (m) of all the pixels flowing thorough each pixel;
- flowacc.txt - Contributing area in pixels;
To change the names of the output files, edit the last section of the source code.
- junctions.txt - how many of a pixel's 8 neighbors flow into it;
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| Output format
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ASCII
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| Other output format
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| Pre-processing software needed?
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Yes
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| Describe pre-processing software
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ArcGIS to produce the flow direction file and convert the files to ESRI ASCII format.
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| Post-processing software needed?
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Yes
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| Describe post-processing software
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ArcGIS or other GIS package to convert the ASCII files to maps.
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| Visualization software needed?
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Yes
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| If above answer is yes
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ESRI, Matlab
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| Other visualization software
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Process
| Describe processes represented by the model
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| Describe key physical parameters and equations
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Calculate the hypsometric integral by
HI = (Zbar-Zo)/(Zmax-Zo)
where Zbar is the average elevation of the contributing area to a pixel
Zo is the local elevation (the elevation of a pixel)
Zmax is the maximum elevation of a pixel contributing area.
For more details read:
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, Journal of Geophysical Research, 113, F03027.
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| Describe length scale and resolution constraints
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| Describe time scale and resolution constraints
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| Describe any numerical limitations and issues
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Testing
| Describe available calibration data sets
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| Upload calibration data sets if available:
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| Describe available test data sets
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A small DEM and Flow-direction ASCII files
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| Upload test data sets if available:
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Media:DEM demo.txt, Media:FlowDir demo.txt
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| Describe ideal data for testing
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Other
| Do you have current or future plans for collaborating with other researchers?
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| Is there a manual available?
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No
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| Upload manual if available:
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| Model website if any
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| Model forum / discussion board
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| Comments
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[[Additional comments model::Running instructions:
Copy your input files to the source file directory (or the other way around);
Launch MATLAB ;
In MATLAB- map the the model directory;
Edit the input file name in the source-code file (lines 19 & 20);
[Optional] edit the output file names (at the last part of the source-code);
Run the script via MATLAB;
The output files will be created in the same directory;
Use MATLAB to visualize the output or import them to ArcGIS or other GIS package;
Good luck]]
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Introduction
History
Papers
- 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, Journal of Geophysical Research, 113, F03027, DOI Link.
Issues
Help
If you need assistance email me to:
sagy.cohen@uon.edu.au
Input Files
Output Files
Download
Source |
