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
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| Other platform
|
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| Programming language
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C
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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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1991
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| Does model development still take place?
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Yes
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| If above answer is no, provide end year model development
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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)
|
Through owner"Through owner" is not in the list (Through web repository, Through CSDMS repository) of allowed values for the "Source code availability" property.
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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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GPL v2
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| Program license type other
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| Memory requirements
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Variable
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| Typical run time
|
minutes to days
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In/Output
| Describe input parameters
|
Standard input parameter files (ascii). For some conditions, also require additional binary file specifying boundary configuration.
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| Input format
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ASCII, Binary
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| Other input format
|
|
| Describe output parameters
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Elevation, drainage area, and related gridded information.
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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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No
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| Describe pre-processing software
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| Post-processing software needed?
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No
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| Describe post-processing software
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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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IDL, Matlab
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| Other visualization software
|
some visualization scripts for IDL and Matlab available.
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Process
| Describe processes represented by the model
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Runoff, hillslope and channel sediment transport.
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| Describe key physical parameters and equations
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Key state variables include surface elevation, soil thickness, and discharge.
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| Describe length scale and resolution constraints
|
Has been used on scales from small (few km2) watersheds to sub-continental areas.
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| Describe time scale and resolution constraints
|
Designed for time scales over which topography changes appreciably, which might be years for badlands, up to thousands or millions of years for other landscapes.
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| Describe any numerical limitations and issues
|
Equation set is still and uses robust but relatively inefficient solvers. Recommend testing with coarse grid resolutions (say, 20x20 cells) before attempting larger/finer grids.
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Testing
| Describe available calibration data sets
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Few or none, unfortunately
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| Upload calibration data sets if available:
|
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| Describe available test data sets
|
--
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| Upload test data sets if available:
|
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| Describe ideal data for testing
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See paper on geomorphic natural experiments by Tucker (in review, 2008)
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Other
| Do you have current or future plans for collaborating with other researchers?
|
--
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| Comments
|
GOLEM was written in the 1990s by one of the creators of CHILD. Although it lacks many of the special capabilities of CHILD, it has a simpler, more compact code base (just a single C source file) and uses a raster grid data structure.
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GOLEM
Introduction
History
Papers
GOLEM Questionnaire
Contact Information
| Model:
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GOLEM
|
| Contact person:
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Greg Tucker
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| Institute:
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CIRES & Dept. Geological Sciences, Univ. of Colorado
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| City:
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Boulder, CO
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| Country:
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USA
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| Email:
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Gregory.Tucker@colorado.edu
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| 2nd person involved:
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--
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| 3rd person involved:
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--
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Model description
| Model type:
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Single model for the terrestrial domain.
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| Description:
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Landscape evolution model. Computes evolution of topography under the action of rainfall and tectonics.
|
Technical information
| Supported platforms:
|
UNIX, Linux, Mac OSX
|
| Programming language:
|
C
|
| Model was developed started from:
|
1991 and development still takes place
|
| To what degree will the model become available:
|
As code
|
| Current license type:
|
GPL v.2
|
| Memory requirements:
|
variable
|
| Typical run time:
|
minutes to days
|
Input / Output description
| Input parameters:
|
Standard input parameter files (ascii). For some conditions, also require additional binary file specifying boundary configuration.
|
| Input format:
|
ASCII, Binary
|
| Output parameters:
|
Elevation, drainage area, and related gridded information.
|
| Output format:
|
ASCII
|
| Post-processing software (if needed):
|
no
|
| Visualization software (if needed):
|
yes, some visualization scripts for IDL and Matlab available.
|
Process description
| Processes represented by model:
|
Runoff, hillslope and channel sediment transport.
|
| Key physical parameters & equations:
|
Key state variables include surface elevation, soil thickness, and discharge.
|
| Length scale & resolution constraints:
|
Has been used on scales from small (few km2) watersheds to sub-continental areas.
|
| Time scale & resolution constraints:
|
Designed for time scales over which topography changes appreciably, which might be years for badlands, up to thousands or millions of years for other landscapes.
|
| Numerical limitations and issues :
|
Equation set is still and uses robust but relatively inefficient solvers. Recommend testing with coarse grid resolutions (say, 20x20 cells) before attempting larger/finer grids.
|
Testing
| Available calibration data sets:
|
Few or none, unfortunately
|
| Available test data sets:
|
--
|
| Ideal data for testing:
|
See paper on geomorphic natural experiments by Tucker (in review, 2008)
|
User groups
| Currently or plans for collaborating with:
|
--
|
Documentation
| Key papers of the model:
|
- Tucker, G.E., and Whipple, K.X. (2002) Topographic outcomes predicted by stream erosion models: Sensitivity analysis and intermodel comparison, Journal of Geophysical Research, v. 107, no. B9, 2179, doi:10.1029/2001JB000162.
- Tucker, G.E., and Bras, R.L. (1998) Hillslope Processes, Drainage Density, and Landscape Morphology: Water Resources Research, vol. 34, p. 2751-2764.
- Tucker, G.E., and Slingerland, R.L. (1997) Drainage Basin Responses to Climate Change: Water Resources Research, vol. 33, p. 2031-2047.
- Tucker, G.E., and Slingerland, R.L. (1996) Predicting Sediment Flux from Fold and Thrust Belts: Basin Research, vol. 8, p. 329-349.
- Tucker, G.E., and Slingerland, R.L. (1994) Erosional Dynamics, Flexural Isostasy, and Long-Lived Escarpments. Journal of Geophysical Research, vol. 99, p. 12,229-12,243.
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| Is there a manual available:
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yes
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| Model website if any:
|
http://www.colorado.edu/geolsci/gtucker/Software/Golem/GolemMain.html
|
| Comments:
|
GOLEM was written in the 1990s by one of the creators of CHILD. Although it lacks many of the special capabilities of CHILD, it has a simpler, more compact code base (just a single C source file) and uses a raster grid data structure.
|
Issues
Help
Input Files
Output Files
Download
You can download the source code at:
http://www.colorado.edu/geolsci/gtucker/Software/Golem/GolemMain.html
Source |
