Model:Erode

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Contact

Name Scott Peckham
Type of contact Model developer
Institute / Organization CSDMS, INSTAAR, University of Colorado
Postal address 1 1560 30th street
Postal address 2
Town / City Boulder
Postal code 80309
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 Scott.Peckham@colorado.edu
Phone 303-492-6752
Fax



Erode


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, Windows
Other platform
Programming language

IDL

Other program language
Code optimized Single Processor
Multiple processors implemented
Nr of distributed processors
Nr of shared processors
Start year development 2003
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 owner"Through owner" is not in the list (Through web repository, Through CSDMS repository) of allowed values for the "Source code availability" property.
Source web address
Source csdms web address
Program license type Apache public license
Program license type other
Memory requirements Standard
Typical run time hours-days


In/Output

Describe input parameters Initial land surface (several built-in options), number of timesteps, DEM grid dimensions, DEM grid cell dimensions, R = "geomorphic" rainrate (m/yr), U=uplift rate (mm/yr), BLR = base-level lowering rate (mm/yr), Kf="erodibility coefficient (m^3/yr)^(1-m), m = area/discharge exponent, n = slope exponent, p = area-discharge exponent, toggles for different types of boundary conditions (e.g. periodic), DEM georeferencing info (bounding box, pixel geometry, etc.)
Input format
Other input format Command line
Describe output parameters A sequence of grids that represent DEMs at different times in the evolution. Saved in RTS (RiverTools Sequence) format with RTI file for georeferencing.
Output format Binary
Other output format
Pre-processing software needed? No
Describe pre-processing software
Post-processing software needed? Yes
Describe post-processing software RiverTools or a similar program can be used to create animations of the grid sequence.
Visualization software needed? Yes
If above answer is yes
Other visualization software Rivertools


Process

Describe processes represented by the model Sediment transport (parameterized with slope and contributing area grids), rainfall, uplift, base-level lowering.
Describe key physical parameters and equations The main equations are:

Q = R * A^p
Qs = Kf * (Q^m) * (S^n),
2D mass conservation equations for water and sediment

Describe length scale and resolution constraints Typical grid cell dimensions are 10 to 500 meters.
Describe time scale and resolution constraints Typical simulated time is 1000 to 100,000 years.
Describe any numerical limitations and issues D8 flow codes are used to compute contributing areas. Would be better to use D-Infinity or the Mass-Flux method.


Testing

Describe available calibration data sets None
Upload calibration data sets if available:
Describe available test data sets None
Upload test data sets if available:
Describe ideal data for testing [[Describe ideal data::Same as used for other LEMs, like CHILD and MARSSIM.]]


Other

Do you have current or future plans for collaborating with other researchers? See comments below.
Is there a manual available? No
Upload manual if available:
Model website if any
Model forum / discussion board
Comments I currently have an NSF-CMG grant to work with Greg Tucker, Tom Manteuffel and Steve McCormick to find faster algorithms for this type of model.


Erode

Introduction

History

Papers

Erode Questionnaire

Contact Information

Model: Erode
Contact person: Scott Peckham
Institute: CSDMS, INSTAAR, University of Colorado
City: Boulder, CO
Country: USA
Email: Scott.Peckham@colorado.edu
2nd person involved: --
3rd person involved: --

Model description

Model type: Modular model for the terrestrial domain.
Description: Erode is a raster-based, fluvial landscape evolution model written in IDL.

Technical information

Supported platforms: UNIX, Linux, Mac OSX, Windows
Programming language: IDL
Model development started at: 2003 and development still takes place.
To what degree will the model become available: Source code will be available. Model also available as teaching tool, and as IDL SAV file (can run with free IDL VM)
Current license type: Apache public license
Memory requirements: Standard
Typical run time: Hours to days

Input / Output description

Input parameters: Initial land surface (several built-in options), number of timesteps, DEM grid dimensions, DEM grid cell dimensions, R = "geomorphic" rainrate (m/yr), U=uplift rate (mm/yr), BLR = base-level lowering rate (mm/yr), Kf="erodibility coefficient (m^3/yr)^(1-m), m = area/discharge exponent, n = slope exponent, p = area-discharge exponent, toggles for different types of boundary conditions (e.g. periodic), DEM georeferencing info (bounding box, pixel geometry, etc.)
Input format: Command line
Output parameters: A sequence of grids that represent DEMs at different times in the evolution. Saved in RTS (RiverTools Sequence) format with RTI file for georeferencing.
Output format: Binary
Post-processing software (if needed): Yes, RiverTools or a similar program can be used to create animations of the grid sequence.
Visualization software (if needed): Yes, RiverTools

Process description

Processes represented by model: Sediment transport (parameterized with slope and contributing area grids), rainfall, uplift, base-level lowering.
Key physical parameters & equations: The main equations are:

Q = R * A^p
Qs = Kf * (Q^m) * (S^n),
2D mass conservation equations for water and sediment

Length scale & resolution constraints: Typical grid cell dimensions are 10 to 500 meters.
Time scale & resolution constraints: Typical simulated time is 1000 to 100,000 years.
Numerical limitations and issues : D8 flow codes are used to compute contributing areas. Would be better to use D-Infinity or the Mass-Flux method.

Testing

Available calibration data sets: None
Available test data sets: None
Ideal data for testing: Same as used for other LEMs, like CHILD and MARSSIM.

User groups

Currently or plans for collaborating with: See comments below.

Documentation

Key papers of the model: None.
Is there a manual available: no
Model website if any: --

Additional comments

Comments: I currently have an NSF-CMG grant to work with Greg Tucker, Tom Manteuffel and Steve McCormick to find faster algorithms for this type of model.

Issues

Help

Input Files

Output Files

Download

Source