Model:GOLEM: Difference between revisions

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|Categories=Terrestrial
|Categories=Terrestrial
|Spatial dimensions=2D
|Spatial dimensions=2D
|One-line model description=Landscape evolution model  
|One-line model description=Landscape evolution model
|Extended model description=Landscape evolution model. Computes evolution of topography under the action of rainfall and tectonics.  
|Extended model description=Landscape evolution model. Computes evolution of topography under the action of rainfall and tectonics.
}}
}}
{{Model technical information
{{Model technical information
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|Does model development still take place?=Yes
|Does model development still take place?=Yes
|Model availability=As code
|Model availability=As code
|Source code availability=Through owner
|Source code availability=Through web repository
|Source web address=http://geode.colorado.edu/~gtucker/Software/Golem/GolemMain.html
|Program license type=GPL v2
|Program license type=GPL v2
|OpenMI compliant=No but possible
|OpenMI compliant=No but possible
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}}
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{{Input - Output description
{{Input - Output description
|Describe input parameters=Standard input parameter files (ascii). For some conditions, also require additional binary file specifying boundary configuration.  
|Describe input parameters=Standard input parameter files (ascii). For some conditions, also require additional binary file specifying boundary configuration.
|Input format=ASCII, Binary
|Input format=ASCII, Binary
|Describe output parameters=Elevation, drainage area, and related gridded information.  
|Describe output parameters=Elevation, drainage area, and related gridded information.
|Output format=ASCII
|Output format=ASCII
|Pre-processing software needed?=No
|Pre-processing software needed?=No
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|Visualization software needed?=Yes
|Visualization software needed?=Yes
|If above answer is yes=IDL, Matlab
|If above answer is yes=IDL, Matlab
|Other visualization software=some visualization scripts for IDL and Matlab available.  
|Other visualization software=some visualization scripts for IDL and Matlab available.
}}
}}
{{Process description model
{{Process description model
|Describe processes represented by the model=Runoff, hillslope and channel sediment transport.  
|Describe processes represented by the model=Runoff, hillslope and channel sediment transport.
|Describe key physical parameters and equations=Key state variables include surface elevation, soil thickness, and discharge.  
|Describe key physical parameters and equations=Key state variables include surface elevation, soil thickness, and discharge.
|Describe length scale and resolution constraints=Has been used on scales from small (few km2) watersheds to sub-continental areas.  
|Describe length scale and resolution constraints=Has been used on scales from small (few km2) watersheds to sub-continental areas.
|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.  
|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.
|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.  
|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.
}}
}}
{{Model testing
{{Model testing
|Describe available calibration data sets=Few or none, unfortunately  
|Describe available calibration data sets=Few or none, unfortunately
|Describe available test data sets=--
|Describe available test data sets=--
|Describe ideal data for testing=See paper on geomorphic natural experiments by Tucker (in review, 2008)  
|Describe ideal data for testing=See paper on geomorphic natural experiments by Tucker (in review, 2008)
}}
}}
{{Users groups model
{{Users groups model
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*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.
*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.
|Manual model available=Yes
|Manual model available=Yes
|Model website if any=http://www.colorado.edu/geolsci/gtucker/Software/Golem/GolemMain.html
|Model website if any=http://geode.colorado.edu/~gtucker/Software/Golem/GolemMain.html
}}
}}
{{Additional comments model
{{Additional comments model
|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.  
|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.
}}
}}
{{Infobox Model
{{Infobox Model

Revision as of 13:36, 30 April 2010

Contact

Name Greg Tucker
Type of contact Model developer
Institute / Organization University of Colorado
Postal address 1 CIRES & Dept. Geological Sciences
Postal address 2 Campus Box 399
Town / City Boulder
Postal code 80309-0399
State Colorado
Country USA"USA" is not in the list (Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Argentina, Armenia, Australia, Austria, ...) of allowed values for the "Country" property.
Email address Gregory.Tucker@colorado.edu
Phone +1 303 492 6985
Fax +1 303 492 2606



GOLEM


Metadata

Summary

Also known as
Model type Single
Model part of larger framework
Note on status model
Date note status model

Technical specs

Supported platforms
Unix, Linux, Mac OS
Other platform
Programming language

C

Other program language
Code optimized Single Processor
Multiple processors implemented
Nr of distributed processors
Nr of shared processors
Start year development 1991
Does model development still take place? Yes
If above answer is no, provide end year model development
Code development status
When did you indicate the 'code development status'?
Model availability As code
Source code availability
(Or provide future intension) 		Through web repository
Source web address http://geode.colorado.edu/~gtucker/Software/Golem/GolemMain.html
Source csdms web address
Program license type GPL v2
Program license type other
Memory requirements Variable
Typical run time minutes to days


In/Output

Describe input parameters Standard input parameter files (ascii). For some conditions, also require additional binary file specifying boundary configuration.
Input format ASCII, Binary
Other input format
Describe output parameters Elevation, drainage area, and related gridded information.
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 IDL, Matlab
Other visualization software some visualization scripts for IDL and Matlab available.


Process

Describe processes represented by the model Runoff, hillslope and channel sediment transport.
Describe key physical parameters and equations Key state variables include surface elevation, soil thickness, and discharge.
Describe length scale and resolution constraints Has been used on scales from small (few km2) watersheds to sub-continental areas.
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.
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.


Testing

Describe available calibration data sets Few or none, unfortunately
Upload calibration data sets if available:
Describe available test data sets --
Upload test data sets if available:
Describe ideal data for testing See paper on geomorphic natural experiments by Tucker (in review, 2008)


Other

Do you have current or future plans for collaborating with other researchers? --
Is there a manual available? Yes
Upload manual if available:
Model website if any http://geode.colorado.edu/~gtucker/Software/Golem/GolemMain.html
Model forum / discussion board
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.


Introduction

History

Papers

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

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