Model:MARSSIM: Difference between revisions

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|State=Virginia
|State=Virginia
|Country=USA
|Country=USA
|Email address=ah6p@virginia.edu  
|Email address=ah6p@virginia.edu
|Phone=434-924-0566
|Phone=434-924-0566
|Fax=434-982-2137
|Fax=434-982-2137
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|Model type=Modular
|Model type=Modular
|Categories=Coastal, Terrestrial
|Categories=Coastal, Terrestrial
|One-line model description=Landform evolution model  
|One-line model description=Landform evolution model
|Extended model description=A landform evolution model operating at the drainage basin or larger scale. Recent model development has targeted planetary applications.  
|Extended model description=A landform evolution model operating at the drainage basin or larger scale. Recent model development has targeted planetary applications.
}}
{{Model keywords
|Model keywords=landscape evolution
}}
}}
{{Model technical information
{{Model technical information
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|Describe input parameters=Initial elevation file.
|Describe input parameters=Initial elevation file.


File specifying boundary conditions, run time, process options, and parameter values.  
File specifying boundary conditions, run time, process options, and parameter values.
|Input format=ASCII
|Input format=ASCII
|Describe output parameters=RAW image files of elevation and shaded relief.
|Describe output parameters=RAW image files of elevation and shaded relief.
ASCII file of elevations at specified times.
ASCII file of elevations at specified times.
ASCII files of other state variables as desired at specified times.
ASCII files of other state variables as desired at specified times.
Iteration-by-iteration summary file  
Iteration-by-iteration summary file
|Output format=ASCII
|Output format=ASCII
|Pre-processing software needed?=No
|Pre-processing software needed?=No
|Post-processing software needed?=Yes
|Post-processing software needed?=Yes
|Describe post-processing software=Photoshop to produce movies. Conversions to a variety of data formats.  
|Describe post-processing software=Photoshop to produce movies. Conversions to a variety of data formats.
|Visualization software needed?=Yes
|Visualization software needed?=Yes
|Other visualization software=Surfer for topographic maps  
|Other visualization software=Surfer for topographic maps
}}
}}
{{Process description model
{{Process description model
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Bedload sediment transport & deposition in streams, fans, deltas.
Bedload sediment transport & deposition in streams, fans, deltas.
Impact cratering, aeolian deposition, lava flows.
Impact cratering, aeolian deposition, lava flows.
Flow routing with evaporation from depressions.  
Flow routing with evaporation from depressions.
|Describe key physical parameters and equations=Bedrock erodibility, mass wasting diffusivity, bed material grain size, flow hydrologic parameters, relative evaporation rate, cratering size distribution and rate, eolian deposition parameters, etc.  
|Describe key physical parameters and equations=Bedrock erodibility, mass wasting diffusivity, bed material grain size, flow hydrologic parameters, relative evaporation rate, cratering size distribution and rate, eolian deposition parameters, etc.
|Describe length scale and resolution constraints=Variable - targeted towards drainage basin or larger scales. Spatial scale determined by input parameter and run-time specification of array dimentions. Uses rectangular grid cells.  
|Describe length scale and resolution constraints=Variable - targeted towards drainage basin or larger scales. Spatial scale determined by input parameter and run-time specification of array dimentions. Uses rectangular grid cells.
|Describe time scale and resolution constraints=Variable - Limited by computer speed.  
|Describe time scale and resolution constraints=Variable - Limited by computer speed.
|Describe any numerical limitations and issues=Runs with grid sizes greater than about 600x600 may require many days on a PC.
|Describe any numerical limitations and issues=Runs with grid sizes greater than about 600x600 may require many days on a PC.
Model assumes fluvial streams have gradients determined by steady-state transport.
Model assumes fluvial streams have gradients determined by steady-state transport.


Depositional stratigraphy not modeled.  
Depositional stratigraphy not modeled.
}}
}}
{{Model testing
{{Model testing
|Describe available calibration data sets=None
|Describe available calibration data sets=None
|Describe available test data sets=Example runs for most types of simulation scenarios  
|Describe available test data sets=Example runs for most types of simulation scenarios
|Describe ideal data for testing=None
|Describe ideal data for testing=None
}}
}}
{{Users groups model
{{Users groups model
|Do you have current or future plans for collaborating with other researchers?=Yes, at present primarily in the planetary community.  
|Do you have current or future plans for collaborating with other researchers?=Yes, at present primarily in the planetary community.
}}
}}
{{Documentation model
{{Documentation model
|Provide key papers on model if any=Howard, A.D., 1994, A detachment-limited model of drainage basin evolution, Water Resources Research, 30(7) 2261-85.
|Provide key papers on model if any=Howard, A.D., 1994, A detachment-limited model of drainage basin evolution, Water Resources Research, 30(7) 2261-85.
Howard, A.D., 2007, Simulating the development of martian highland landscapes..., Geomorphology, 91, 332-363.  
Howard, A.D., 2007, Simulating the development of martian highland landscapes..., Geomorphology, 91, 332-363.
|Manual model available=Yes
|Manual model available=Yes
|Model manual=marssim_program.pdf
|Model manual=marssim_program.pdf
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}}
}}
{{Additional comments model
{{Additional comments model
|Comments=Most recent model available from ah6p@virginia.edu.  
|Comments=Most recent model available from ah6p@virginia.edu.
}}
}}
<!-- Edit the part above to update info on other papers -->
<!-- Edit the part above to update info on other papers -->


Revision as of 15:29, 21 March 2011

Contact

Name Alan Howard
Type of contact Model developer
Institute / Organization University of Virginia
Postal address 1 P.O. Box 400123
Postal address 2
Town / City Charlottesville
Postal code 22904-4123
State Virginia
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 ah6p@virginia.edu
Phone 434-924-0566
Fax 434-982-2137



MARSSIM


Metadata

Summary

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

landscape evolution,

Technical specs

Supported platforms
Linux, Windows
Other platform
Programming language

Fortran90

Other program language
Code optimized
Multiple processors implemented
Nr of distributed processors
Nr of shared processors
Start year development 1990
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 CSDMS repository
Source web address
Source csdms web address
Program license type Other
Program license type other None
Memory requirements Variable - dynamic arrays
Typical run time hour to days


In/Output

Describe input parameters Initial elevation file.

File specifying boundary conditions, run time, process options, and parameter values.

Input format ASCII
Other input format
Describe output parameters RAW image files of elevation and shaded relief.

ASCII file of elevations at specified times. ASCII files of other state variables as desired at specified times. Iteration-by-iteration summary file

Output format ASCII
Other output format
Pre-processing software needed? No
Describe pre-processing software
Post-processing software needed? Yes
Describe post-processing software Photoshop to produce movies. Conversions to a variety of data formats.
Visualization software needed? Yes
If above answer is yes
Other visualization software Surfer for topographic maps


Process

Describe processes represented by the model Bedrock fluvial incision (shear stress or sediment flux dependency).

Mass wasting (creep and threshold-limited). Bedload sediment transport & deposition in streams, fans, deltas. Impact cratering, aeolian deposition, lava flows. Flow routing with evaporation from depressions.

Describe key physical parameters and equations Bedrock erodibility, mass wasting diffusivity, bed material grain size, flow hydrologic parameters, relative evaporation rate, cratering size distribution and rate, eolian deposition parameters, etc.
Describe length scale and resolution constraints Variable - targeted towards drainage basin or larger scales. Spatial scale determined by input parameter and run-time specification of array dimentions. Uses rectangular grid cells.
Describe time scale and resolution constraints Variable - Limited by computer speed.
Describe any numerical limitations and issues Runs with grid sizes greater than about 600x600 may require many days on a PC.

Model assumes fluvial streams have gradients determined by steady-state transport.

Depositional stratigraphy not modeled.


Testing

Describe available calibration data sets None
Upload calibration data sets if available:
Describe available test data sets Example runs for most types of simulation scenarios
Upload test data sets if available:
Describe ideal data for testing None


Other

Do you have current or future plans for collaborating with other researchers? Yes, at present primarily in the planetary community.
Is there a manual available? Yes
Upload manual if available: Media:marssim_program.pdf
Model website if any http://erode.evsc.virginia.edu
Model forum / discussion board
Comments Most recent model available from ah6p@virginia.edu.


Download statistics

<pbars ytitle=Downloads Title='Monthly Downloads marssim' xlabels=true size=900x200 ymax=20 grid=true box=true cubic=true plots=open xformat=number connected=true angle=90 legend> ,Total downloads: 120 2008 - Jan,0 Feb,0 Mar,0 Apr,0 May,0 Jun,0 Jul,0 Aug,0 Sep,0 Oct,0 Nov,0 Dec,0 2009 - Jan,0 Feb,0 Mar,0 Apr,0 May,0 Jun,9 Jul,0 Aug,1 Sep,3 Oct,2 Nov,3 Dec,1 2010 - Jan,5 Feb,7 Mar,6 Apr,1 May,6 Jun,5 Jul,0 Aug,4 Sep,3 Oct,0 Nov,4 Dec,3 2011 - Jan,0 Feb,2 Mar,1 Apr,0 May,0 Jun,1 Jul,0 Aug,0 Sep,3 Oct,1 Nov,1 Dec,1 2012 - Jan,1 Feb,0 Mar,1 Apr,0 May,2 Jun,1 Jul,2 Aug,0 Sep,1 Oct,1 Nov,1 Dec,1 2013 - Jan,0 Feb,5 Mar,2 Apr,1 May,1 Jun,1 Jul,3 Aug,1 Sep,5 Oct,0 Nov,1 Dec,0 2014 - Jan,0 Feb,1 Mar,0 Apr,3 May,0 Jun,1 Jul,2 Aug,2 Sep,4 Oct,0 Nov,1 Dec,1 2015 - Jan,0 Feb,1 Mar,0 Apr,0 May,0 Jun,0 Jul,0 </pbars>

Introduction

History

Papers

Issues

Help

Documentation that describes MARSSIM subroutines and functions, input and output files, and literature references can be found here: marssim_program.pdf

Input Files

See: marssim_program.pdf

Output Files

See: marssim_program.pdf

Download source code

Template:Download Model

Accessory MARSSIM programs can be downloaded here: accessory_programs.zip

Example simulations are for a variety of scenarios are generated and can be downloaded below:

  • Accretion
  • Arid_slope
  • Bedrock: (download these 2 files and place Resist.in in the bedrock folder)
  1. Bedrock
  2. Resist.in
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